|
|
017ff1 |
diff --git a/Makefile.in b/Makefile.in
|
|
|
017ff1 |
index 0f0d39f..9d8c2eb 100644
|
|
|
017ff1 |
--- a/Makefile.in
|
|
|
017ff1 |
+++ b/Makefile.in
|
|
|
017ff1 |
@@ -82,7 +82,8 @@ LIBSSH_OBJS=authfd.o authfile.o bufaux.o bufbn.o buffer.o \
|
|
|
017ff1 |
ssh-pkcs11.o krl.o smult_curve25519_ref.o \
|
|
|
017ff1 |
kexc25519.o kexc25519c.o poly1305.o chacha.o cipher-chachapoly.o \
|
|
|
017ff1 |
ssh-ed25519.o digest-openssl.o hmac.o utf8_stringprep.o \
|
|
|
017ff1 |
- sc25519.o ge25519.o fe25519.o ed25519.o verify.o hash.o blocks.o
|
|
|
017ff1 |
+ sc25519.o ge25519.o fe25519.o ed25519.o verify.o hash.o blocks.o \
|
|
|
017ff1 |
+ auditstub.o
|
|
|
f09e2e |
|
|
|
f09e2e |
SSHOBJS= ssh.o readconf.o clientloop.o sshtty.o \
|
|
|
f09e2e |
sshconnect.o sshconnect1.o sshconnect2.o mux.o \
|
|
|
017ff1 |
diff --git a/audit-bsm.c b/audit-bsm.c
|
|
|
017ff1 |
index 6135591..5160869 100644
|
|
|
017ff1 |
--- a/audit-bsm.c
|
|
|
017ff1 |
+++ b/audit-bsm.c
|
|
|
017ff1 |
@@ -375,10 +375,23 @@ audit_connection_from(const char *host, int port)
|
|
|
f09e2e |
#endif
|
|
|
f09e2e |
}
|
|
|
f09e2e |
|
|
|
f09e2e |
-void
|
|
|
f09e2e |
+int
|
|
|
f09e2e |
audit_run_command(const char *command)
|
|
|
f09e2e |
{
|
|
|
f09e2e |
/* not implemented */
|
|
|
f09e2e |
+ return 0;
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+void
|
|
|
f09e2e |
+audit_end_command(int handle, const char *command)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+ /* not implemented */
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+void
|
|
|
f09e2e |
+audit_count_session_open(void)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+ /* not necessary */
|
|
|
f09e2e |
}
|
|
|
f09e2e |
|
|
|
f09e2e |
void
|
|
|
017ff1 |
@@ -393,6 +406,12 @@ audit_session_close(struct logininfo *li)
|
|
|
f09e2e |
/* not implemented */
|
|
|
f09e2e |
}
|
|
|
f09e2e |
|
|
|
f09e2e |
+int
|
|
|
f09e2e |
+audit_keyusage(int host_user, const char *type, unsigned bits, char *fp, int rv)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+ /* not implemented */
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+
|
|
|
f09e2e |
void
|
|
|
f09e2e |
audit_event(ssh_audit_event_t event)
|
|
|
f09e2e |
{
|
|
|
f09e2e |
@@ -454,4 +473,40 @@ audit_event(ssh_audit_event_t event)
|
|
|
f09e2e |
debug("%s: unhandled event %d", __func__, event);
|
|
|
f09e2e |
}
|
|
|
f09e2e |
}
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+void
|
|
|
f09e2e |
+audit_unsupported_body(int what)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+ /* not implemented */
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+void
|
|
|
f09e2e |
+audit_kex_body(int ctos, char *enc, char *mac, char *compress, pid_t pid, uid_t uid)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+ /* not implemented */
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+void
|
|
|
f09e2e |
+audit_session_key_free_body(int ctos, pid_t pid, uid_t uid)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+ /* not implemented */
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+void
|
|
|
f09e2e |
+audit_destroy_sensitive_data(const char *fp)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+ /* not implemented */
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+void
|
|
|
f09e2e |
+audit_destroy_sensitive_data(const char *fp, pid_t pid, uid_t uid)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+ /* not implemented */
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+void
|
|
|
f09e2e |
+audit_generate_ephemeral_server_key(const char *fp)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+ /* not implemented */
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
#endif /* BSM */
|
|
|
017ff1 |
diff --git a/audit-linux.c b/audit-linux.c
|
|
|
017ff1 |
index b3ee2f4..946f7fa 100644
|
|
|
017ff1 |
--- a/audit-linux.c
|
|
|
017ff1 |
+++ b/audit-linux.c
|
|
|
f09e2e |
@@ -35,13 +35,24 @@
|
|
|
f09e2e |
|
|
|
f09e2e |
#include "log.h"
|
|
|
f09e2e |
#include "audit.h"
|
|
|
f09e2e |
+#include "key.h"
|
|
|
f09e2e |
+#include "hostfile.h"
|
|
|
f09e2e |
+#include "auth.h"
|
|
|
f09e2e |
+#include "servconf.h"
|
|
|
f09e2e |
#include "canohost.h"
|
|
|
f09e2e |
+#include "packet.h"
|
|
|
f09e2e |
+#include "cipher.h"
|
|
|
f09e2e |
|
|
|
017ff1 |
+#define AUDIT_LOG_SIZE 256
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+extern ServerOptions options;
|
|
|
f09e2e |
+extern Authctxt *the_authctxt;
|
|
|
f09e2e |
+extern u_int utmp_len;
|
|
|
f09e2e |
const char* audit_username(void);
|
|
|
f09e2e |
|
|
|
f09e2e |
-int
|
|
|
f09e2e |
-linux_audit_record_event(int uid, const char *username,
|
|
|
f09e2e |
- const char *hostname, const char *ip, const char *ttyn, int success)
|
|
|
f09e2e |
+static void
|
|
|
f09e2e |
+linux_audit_user_logxxx(int uid, const char *username,
|
|
|
f09e2e |
+ const char *hostname, const char *ip, const char *ttyn, int success, int event)
|
|
|
f09e2e |
{
|
|
|
f09e2e |
int audit_fd, rc, saved_errno;
|
|
|
f09e2e |
|
|
|
017ff1 |
@@ -49,11 +60,11 @@ linux_audit_record_event(int uid, const char *username,
|
|
|
f09e2e |
if (audit_fd < 0) {
|
|
|
f09e2e |
if (errno == EINVAL || errno == EPROTONOSUPPORT ||
|
|
|
f09e2e |
errno == EAFNOSUPPORT)
|
|
|
f09e2e |
- return 1; /* No audit support in kernel */
|
|
|
f09e2e |
+ return; /* No audit support in kernel */
|
|
|
f09e2e |
else
|
|
|
f09e2e |
- return 0; /* Must prevent login */
|
|
|
f09e2e |
+ goto fatal_report; /* Must prevent login */
|
|
|
f09e2e |
}
|
|
|
f09e2e |
- rc = audit_log_acct_message(audit_fd, AUDIT_USER_LOGIN,
|
|
|
f09e2e |
+ rc = audit_log_acct_message(audit_fd, event,
|
|
|
f09e2e |
NULL, "login", username ? username : "(unknown)",
|
|
|
f09e2e |
username == NULL ? uid : -1, hostname, ip, ttyn, success);
|
|
|
f09e2e |
saved_errno = errno;
|
|
|
017ff1 |
@@ -65,35 +76,150 @@ linux_audit_record_event(int uid, const char *username,
|
|
|
f09e2e |
if ((rc == -EPERM) && (geteuid() != 0))
|
|
|
f09e2e |
rc = 0;
|
|
|
f09e2e |
errno = saved_errno;
|
|
|
f09e2e |
- return (rc >= 0);
|
|
|
f09e2e |
+ if (rc < 0) {
|
|
|
f09e2e |
+fatal_report:
|
|
|
f09e2e |
+ fatal("linux_audit_write_entry failed: %s", strerror(errno));
|
|
|
f09e2e |
+ }
|
|
|
f09e2e |
}
|
|
|
f09e2e |
|
|
|
f09e2e |
+static void
|
|
|
f09e2e |
+linux_audit_user_auth(int uid, const char *username,
|
|
|
f09e2e |
+ const char *hostname, const char *ip, const char *ttyn, int success, int event)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+ int audit_fd, rc, saved_errno;
|
|
|
f09e2e |
+ static const char *event_name[] = {
|
|
|
f09e2e |
+ "maxtries exceeded",
|
|
|
f09e2e |
+ "root denied",
|
|
|
f09e2e |
+ "success",
|
|
|
f09e2e |
+ "none",
|
|
|
f09e2e |
+ "password",
|
|
|
f09e2e |
+ "challenge-response",
|
|
|
f09e2e |
+ "pubkey",
|
|
|
f09e2e |
+ "hostbased",
|
|
|
f09e2e |
+ "gssapi",
|
|
|
f09e2e |
+ "invalid user",
|
|
|
f09e2e |
+ "nologin",
|
|
|
f09e2e |
+ "connection closed",
|
|
|
f09e2e |
+ "connection abandoned",
|
|
|
f09e2e |
+ "unknown"
|
|
|
f09e2e |
+ };
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ audit_fd = audit_open();
|
|
|
f09e2e |
+ if (audit_fd < 0) {
|
|
|
f09e2e |
+ if (errno == EINVAL || errno == EPROTONOSUPPORT ||
|
|
|
f09e2e |
+ errno == EAFNOSUPPORT)
|
|
|
f09e2e |
+ return; /* No audit support in kernel */
|
|
|
f09e2e |
+ else
|
|
|
f09e2e |
+ goto fatal_report; /* Must prevent login */
|
|
|
f09e2e |
+ }
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ if ((event < 0) || (event > SSH_AUDIT_UNKNOWN))
|
|
|
f09e2e |
+ event = SSH_AUDIT_UNKNOWN;
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ rc = audit_log_acct_message(audit_fd, AUDIT_USER_AUTH,
|
|
|
f09e2e |
+ NULL, event_name[event], username ? username : "(unknown)",
|
|
|
f09e2e |
+ username == NULL ? uid : -1, hostname, ip, ttyn, success);
|
|
|
f09e2e |
+ saved_errno = errno;
|
|
|
f09e2e |
+ close(audit_fd);
|
|
|
f09e2e |
+ /*
|
|
|
f09e2e |
+ * Do not report error if the error is EPERM and sshd is run as non
|
|
|
f09e2e |
+ * root user.
|
|
|
f09e2e |
+ */
|
|
|
f09e2e |
+ if ((rc == -EPERM) && (geteuid() != 0))
|
|
|
f09e2e |
+ rc = 0;
|
|
|
f09e2e |
+ errno = saved_errno;
|
|
|
f09e2e |
+ if (rc < 0) {
|
|
|
f09e2e |
+fatal_report:
|
|
|
f09e2e |
+ fatal("linux_audit_write_entry failed: %s", strerror(errno));
|
|
|
f09e2e |
+ }
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+int
|
|
|
f09e2e |
+audit_keyusage(int host_user, const char *type, unsigned bits, char *fp, int rv)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+ char buf[AUDIT_LOG_SIZE];
|
|
|
f09e2e |
+ int audit_fd, rc, saved_errno;
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ audit_fd = audit_open();
|
|
|
f09e2e |
+ if (audit_fd < 0) {
|
|
|
f09e2e |
+ if (errno == EINVAL || errno == EPROTONOSUPPORT ||
|
|
|
f09e2e |
+ errno == EAFNOSUPPORT)
|
|
|
f09e2e |
+ return 1; /* No audit support in kernel */
|
|
|
f09e2e |
+ else
|
|
|
f09e2e |
+ return 0; /* Must prevent login */
|
|
|
f09e2e |
+ }
|
|
|
f09e2e |
+ snprintf(buf, sizeof(buf), "%s_auth rport=%d", host_user ? "pubkey" : "hostbased", get_remote_port());
|
|
|
f09e2e |
+ rc = audit_log_acct_message(audit_fd, AUDIT_USER_AUTH, NULL,
|
|
|
f09e2e |
+ buf, audit_username(), -1, NULL, get_remote_ipaddr(), NULL, rv);
|
|
|
f09e2e |
+ if ((rc < 0) && ((rc != -1) || (getuid() == 0)))
|
|
|
f09e2e |
+ goto out;
|
|
|
f09e2e |
+ snprintf(buf, sizeof(buf), "key algo=%s size=%d fp=%s%s rport=%d",
|
|
|
f09e2e |
+ type, bits, key_fingerprint_prefix(), fp, get_remote_port());
|
|
|
f09e2e |
+ rc = audit_log_acct_message(audit_fd, AUDIT_USER_AUTH, NULL,
|
|
|
f09e2e |
+ buf, audit_username(), -1, NULL, get_remote_ipaddr(), NULL, rv);
|
|
|
f09e2e |
+out:
|
|
|
f09e2e |
+ saved_errno = errno;
|
|
|
f09e2e |
+ audit_close(audit_fd);
|
|
|
f09e2e |
+ errno = saved_errno;
|
|
|
f09e2e |
+ /* do not report error if the error is EPERM and sshd is run as non root user */
|
|
|
f09e2e |
+ return (rc >= 0) || ((rc == -EPERM) && (getuid() != 0));
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+static int user_login_count = 0;
|
|
|
f09e2e |
+
|
|
|
f09e2e |
/* Below is the sshd audit API code */
|
|
|
f09e2e |
|
|
|
f09e2e |
void
|
|
|
f09e2e |
audit_connection_from(const char *host, int port)
|
|
|
f09e2e |
{
|
|
|
f09e2e |
-}
|
|
|
f09e2e |
/* not implemented */
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
|
|
|
f09e2e |
-void
|
|
|
f09e2e |
+int
|
|
|
f09e2e |
audit_run_command(const char *command)
|
|
|
f09e2e |
{
|
|
|
f09e2e |
- /* not implemented */
|
|
|
f09e2e |
+ if (!user_login_count++)
|
|
|
f09e2e |
+ linux_audit_user_logxxx(the_authctxt->pw->pw_uid, NULL, get_remote_name_or_ip(utmp_len, options.use_dns),
|
|
|
f09e2e |
+ NULL, "ssh", 1, AUDIT_USER_LOGIN);
|
|
|
f09e2e |
+ linux_audit_user_logxxx(the_authctxt->pw->pw_uid, NULL, get_remote_name_or_ip(utmp_len, options.use_dns),
|
|
|
f09e2e |
+ NULL, "ssh", 1, AUDIT_USER_START);
|
|
|
f09e2e |
+ return 0;
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+void
|
|
|
f09e2e |
+audit_end_command(int handle, const char *command)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+ linux_audit_user_logxxx(the_authctxt->pw->pw_uid, NULL, get_remote_name_or_ip(utmp_len, options.use_dns),
|
|
|
f09e2e |
+ NULL, "ssh", 1, AUDIT_USER_END);
|
|
|
f09e2e |
+ if (user_login_count && !--user_login_count)
|
|
|
f09e2e |
+ linux_audit_user_logxxx(the_authctxt->pw->pw_uid, NULL, get_remote_name_or_ip(utmp_len, options.use_dns),
|
|
|
f09e2e |
+ NULL, "ssh", 1, AUDIT_USER_LOGOUT);
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+void
|
|
|
f09e2e |
+audit_count_session_open(void)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+ user_login_count++;
|
|
|
f09e2e |
}
|
|
|
f09e2e |
|
|
|
f09e2e |
void
|
|
|
f09e2e |
audit_session_open(struct logininfo *li)
|
|
|
f09e2e |
{
|
|
|
f09e2e |
- if (linux_audit_record_event(li->uid, NULL, li->hostname,
|
|
|
f09e2e |
- NULL, li->line, 1) == 0)
|
|
|
f09e2e |
- fatal("linux_audit_write_entry failed: %s", strerror(errno));
|
|
|
f09e2e |
+ if (!user_login_count++)
|
|
|
f09e2e |
+ linux_audit_user_logxxx(li->uid, NULL, li->hostname,
|
|
|
f09e2e |
+ NULL, li->line, 1, AUDIT_USER_LOGIN);
|
|
|
f09e2e |
+ linux_audit_user_logxxx(li->uid, NULL, li->hostname,
|
|
|
f09e2e |
+ NULL, li->line, 1, AUDIT_USER_START);
|
|
|
f09e2e |
}
|
|
|
f09e2e |
|
|
|
f09e2e |
void
|
|
|
f09e2e |
audit_session_close(struct logininfo *li)
|
|
|
f09e2e |
{
|
|
|
f09e2e |
- /* not implemented */
|
|
|
f09e2e |
+ linux_audit_user_logxxx(li->uid, NULL, li->hostname,
|
|
|
f09e2e |
+ NULL, li->line, 1, AUDIT_USER_END);
|
|
|
f09e2e |
+ if (user_login_count && !--user_login_count)
|
|
|
f09e2e |
+ linux_audit_user_logxxx(li->uid, NULL, li->hostname,
|
|
|
f09e2e |
+ NULL, li->line, 1, AUDIT_USER_LOGOUT);
|
|
|
f09e2e |
}
|
|
|
f09e2e |
|
|
|
f09e2e |
void
|
|
|
f09e2e |
@@ -101,21 +227,43 @@ audit_event(ssh_audit_event_t event)
|
|
|
f09e2e |
{
|
|
|
f09e2e |
switch(event) {
|
|
|
f09e2e |
case SSH_AUTH_SUCCESS:
|
|
|
f09e2e |
- case SSH_CONNECTION_CLOSE:
|
|
|
f09e2e |
+ linux_audit_user_auth(-1, audit_username(), NULL,
|
|
|
f09e2e |
+ get_remote_ipaddr(), "ssh", 1, event);
|
|
|
f09e2e |
+ break;
|
|
|
f09e2e |
+
|
|
|
f09e2e |
case SSH_NOLOGIN:
|
|
|
f09e2e |
- case SSH_LOGIN_EXCEED_MAXTRIES:
|
|
|
f09e2e |
case SSH_LOGIN_ROOT_DENIED:
|
|
|
f09e2e |
+ linux_audit_user_auth(-1, audit_username(), NULL,
|
|
|
f09e2e |
+ get_remote_ipaddr(), "ssh", 0, event);
|
|
|
f09e2e |
+ linux_audit_user_logxxx(-1, audit_username(), NULL,
|
|
|
f09e2e |
+ get_remote_ipaddr(), "ssh", 0, AUDIT_USER_LOGIN);
|
|
|
f09e2e |
break;
|
|
|
f09e2e |
|
|
|
f09e2e |
+ case SSH_LOGIN_EXCEED_MAXTRIES:
|
|
|
f09e2e |
case SSH_AUTH_FAIL_NONE:
|
|
|
f09e2e |
case SSH_AUTH_FAIL_PASSWD:
|
|
|
f09e2e |
case SSH_AUTH_FAIL_KBDINT:
|
|
|
f09e2e |
case SSH_AUTH_FAIL_PUBKEY:
|
|
|
f09e2e |
case SSH_AUTH_FAIL_HOSTBASED:
|
|
|
f09e2e |
case SSH_AUTH_FAIL_GSSAPI:
|
|
|
f09e2e |
+ linux_audit_user_auth(-1, audit_username(), NULL,
|
|
|
f09e2e |
+ get_remote_ipaddr(), "ssh", 0, event);
|
|
|
f09e2e |
+ break;
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ case SSH_CONNECTION_CLOSE:
|
|
|
f09e2e |
+ if (user_login_count) {
|
|
|
f09e2e |
+ while (user_login_count--)
|
|
|
f09e2e |
+ linux_audit_user_logxxx(the_authctxt->pw->pw_uid, NULL, get_remote_name_or_ip(utmp_len, options.use_dns),
|
|
|
f09e2e |
+ NULL, "ssh", 1, AUDIT_USER_END);
|
|
|
f09e2e |
+ linux_audit_user_logxxx(the_authctxt->pw->pw_uid, NULL, get_remote_name_or_ip(utmp_len, options.use_dns),
|
|
|
f09e2e |
+ NULL, "ssh", 1, AUDIT_USER_LOGOUT);
|
|
|
f09e2e |
+ }
|
|
|
f09e2e |
+ break;
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ case SSH_CONNECTION_ABANDON:
|
|
|
f09e2e |
case SSH_INVALID_USER:
|
|
|
f09e2e |
- linux_audit_record_event(-1, audit_username(), NULL,
|
|
|
f09e2e |
- get_remote_ipaddr(), "sshd", 0);
|
|
|
f09e2e |
+ linux_audit_user_logxxx(-1, audit_username(), NULL,
|
|
|
f09e2e |
+ get_remote_ipaddr(), "ssh", 0, AUDIT_USER_LOGIN);
|
|
|
f09e2e |
break;
|
|
|
f09e2e |
|
|
|
f09e2e |
default:
|
|
|
f09e2e |
@@ -123,4 +271,135 @@ audit_event(ssh_audit_event_t event)
|
|
|
f09e2e |
}
|
|
|
f09e2e |
}
|
|
|
f09e2e |
|
|
|
f09e2e |
+void
|
|
|
f09e2e |
+audit_unsupported_body(int what)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+#ifdef AUDIT_CRYPTO_SESSION
|
|
|
f09e2e |
+ char buf[AUDIT_LOG_SIZE];
|
|
|
f09e2e |
+ const static char *name[] = { "cipher", "mac", "comp" };
|
|
|
f09e2e |
+ char *s;
|
|
|
f09e2e |
+ int audit_fd;
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ snprintf(buf, sizeof(buf), "op=unsupported-%s direction=? cipher=? ksize=? rport=%d laddr=%s lport=%d ",
|
|
|
f09e2e |
+ name[what], get_remote_port(), (s = get_local_ipaddr(packet_get_connection_in())),
|
|
|
f09e2e |
+ get_local_port());
|
|
|
f09e2e |
+ free(s);
|
|
|
f09e2e |
+ audit_fd = audit_open();
|
|
|
f09e2e |
+ if (audit_fd < 0)
|
|
|
f09e2e |
+ /* no problem, the next instruction will be fatal() */
|
|
|
f09e2e |
+ return;
|
|
|
f09e2e |
+ audit_log_user_message(audit_fd, AUDIT_CRYPTO_SESSION,
|
|
|
f09e2e |
+ buf, NULL, get_remote_ipaddr(), NULL, 0);
|
|
|
f09e2e |
+ audit_close(audit_fd);
|
|
|
f09e2e |
+#endif
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+const static char *direction[] = { "from-server", "from-client", "both" };
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+void
|
|
|
f09e2e |
+audit_kex_body(int ctos, char *enc, char *mac, char *compress, pid_t pid,
|
|
|
f09e2e |
+ uid_t uid)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+#ifdef AUDIT_CRYPTO_SESSION
|
|
|
f09e2e |
+ char buf[AUDIT_LOG_SIZE];
|
|
|
f09e2e |
+ int audit_fd, audit_ok;
|
|
|
f09e2e |
+ Cipher *cipher = cipher_by_name(enc);
|
|
|
f09e2e |
+ char *s;
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ snprintf(buf, sizeof(buf), "op=start direction=%s cipher=%s ksize=%d mac=%s spid=%jd suid=%jd rport=%d laddr=%s lport=%d ",
|
|
|
f09e2e |
+ direction[ctos], enc, cipher ? 8 * cipher->key_len : 0, mac,
|
|
|
f09e2e |
+ (intmax_t)pid, (intmax_t)uid,
|
|
|
f09e2e |
+ get_remote_port(), (s = get_local_ipaddr(packet_get_connection_in())), get_local_port());
|
|
|
f09e2e |
+ free(s);
|
|
|
f09e2e |
+ audit_fd = audit_open();
|
|
|
f09e2e |
+ if (audit_fd < 0) {
|
|
|
f09e2e |
+ if (errno == EINVAL || errno == EPROTONOSUPPORT ||
|
|
|
f09e2e |
+ errno == EAFNOSUPPORT)
|
|
|
f09e2e |
+ return; /* No audit support in kernel */
|
|
|
f09e2e |
+ else
|
|
|
f09e2e |
+ fatal("cannot open audit"); /* Must prevent login */
|
|
|
f09e2e |
+ }
|
|
|
f09e2e |
+ audit_ok = audit_log_user_message(audit_fd, AUDIT_CRYPTO_SESSION,
|
|
|
f09e2e |
+ buf, NULL, get_remote_ipaddr(), NULL, 1);
|
|
|
f09e2e |
+ audit_close(audit_fd);
|
|
|
f09e2e |
+ /* do not abort if the error is EPERM and sshd is run as non root user */
|
|
|
f09e2e |
+ if ((audit_ok < 0) && ((audit_ok != -1) || (getuid() == 0)))
|
|
|
f09e2e |
+ fatal("cannot write into audit"); /* Must prevent login */
|
|
|
f09e2e |
+#endif
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+void
|
|
|
f09e2e |
+audit_session_key_free_body(int ctos, pid_t pid, uid_t uid)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+ char buf[AUDIT_LOG_SIZE];
|
|
|
f09e2e |
+ int audit_fd, audit_ok;
|
|
|
f09e2e |
+ char *s;
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ snprintf(buf, sizeof(buf), "op=destroy kind=session fp=? direction=%s spid=%jd suid=%jd rport=%d laddr=%s lport=%d ",
|
|
|
f09e2e |
+ direction[ctos], (intmax_t)pid, (intmax_t)uid,
|
|
|
f09e2e |
+ get_remote_port(),
|
|
|
f09e2e |
+ (s = get_local_ipaddr(packet_get_connection_in())),
|
|
|
f09e2e |
+ get_local_port());
|
|
|
f09e2e |
+ free(s);
|
|
|
f09e2e |
+ audit_fd = audit_open();
|
|
|
f09e2e |
+ if (audit_fd < 0) {
|
|
|
f09e2e |
+ if (errno != EINVAL && errno != EPROTONOSUPPORT &&
|
|
|
f09e2e |
+ errno != EAFNOSUPPORT)
|
|
|
f09e2e |
+ error("cannot open audit");
|
|
|
f09e2e |
+ return;
|
|
|
f09e2e |
+ }
|
|
|
f09e2e |
+ audit_ok = audit_log_user_message(audit_fd, AUDIT_CRYPTO_KEY_USER,
|
|
|
f09e2e |
+ buf, NULL, get_remote_ipaddr(), NULL, 1);
|
|
|
f09e2e |
+ audit_close(audit_fd);
|
|
|
f09e2e |
+ /* do not abort if the error is EPERM and sshd is run as non root user */
|
|
|
f09e2e |
+ if ((audit_ok < 0) && ((audit_ok != -1) || (getuid() == 0)))
|
|
|
f09e2e |
+ error("cannot write into audit");
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+void
|
|
|
f09e2e |
+audit_destroy_sensitive_data(const char *fp, pid_t pid, uid_t uid)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+ char buf[AUDIT_LOG_SIZE];
|
|
|
f09e2e |
+ int audit_fd, audit_ok;
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ snprintf(buf, sizeof(buf), "op=destroy kind=server fp=%s direction=? spid=%jd suid=%jd ",
|
|
|
f09e2e |
+ fp, (intmax_t)pid, (intmax_t)uid);
|
|
|
f09e2e |
+ audit_fd = audit_open();
|
|
|
f09e2e |
+ if (audit_fd < 0) {
|
|
|
f09e2e |
+ if (errno != EINVAL && errno != EPROTONOSUPPORT &&
|
|
|
f09e2e |
+ errno != EAFNOSUPPORT)
|
|
|
f09e2e |
+ error("cannot open audit");
|
|
|
f09e2e |
+ return;
|
|
|
f09e2e |
+ }
|
|
|
f09e2e |
+ audit_ok = audit_log_user_message(audit_fd, AUDIT_CRYPTO_KEY_USER,
|
|
|
f09e2e |
+ buf, NULL,
|
|
|
f09e2e |
+ listening_for_clients() ? NULL : get_remote_ipaddr(),
|
|
|
f09e2e |
+ NULL, 1);
|
|
|
f09e2e |
+ audit_close(audit_fd);
|
|
|
f09e2e |
+ /* do not abort if the error is EPERM and sshd is run as non root user */
|
|
|
f09e2e |
+ if ((audit_ok < 0) && ((audit_ok != -1) || (getuid() == 0)))
|
|
|
f09e2e |
+ error("cannot write into audit");
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+void
|
|
|
f09e2e |
+audit_generate_ephemeral_server_key(const char *fp)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+ char buf[AUDIT_LOG_SIZE];
|
|
|
f09e2e |
+ int audit_fd, audit_ok;
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ snprintf(buf, sizeof(buf), "op=create kind=server fp=%s direction=? ", fp);
|
|
|
f09e2e |
+ audit_fd = audit_open();
|
|
|
f09e2e |
+ if (audit_fd < 0) {
|
|
|
f09e2e |
+ if (errno != EINVAL && errno != EPROTONOSUPPORT &&
|
|
|
f09e2e |
+ errno != EAFNOSUPPORT)
|
|
|
f09e2e |
+ error("cannot open audit");
|
|
|
f09e2e |
+ return;
|
|
|
f09e2e |
+ }
|
|
|
f09e2e |
+ audit_ok = audit_log_user_message(audit_fd, AUDIT_CRYPTO_KEY_USER,
|
|
|
f09e2e |
+ buf, NULL, 0, NULL, 1);
|
|
|
f09e2e |
+ audit_close(audit_fd);
|
|
|
f09e2e |
+ /* do not abort if the error is EPERM and sshd is run as non root user */
|
|
|
f09e2e |
+ if ((audit_ok < 0) && ((audit_ok != -1) || (getuid() == 0)))
|
|
|
f09e2e |
+ error("cannot write into audit");
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
#endif /* USE_LINUX_AUDIT */
|
|
|
017ff1 |
diff --git a/audit.c b/audit.c
|
|
|
017ff1 |
index ced57fa..13c6849 100644
|
|
|
017ff1 |
--- a/audit.c
|
|
|
017ff1 |
+++ b/audit.c
|
|
|
f09e2e |
@@ -28,6 +28,7 @@
|
|
|
f09e2e |
|
|
|
f09e2e |
#include <stdarg.h>
|
|
|
f09e2e |
#include <string.h>
|
|
|
f09e2e |
+#include <unistd.h>
|
|
|
f09e2e |
|
|
|
f09e2e |
#ifdef SSH_AUDIT_EVENTS
|
|
|
f09e2e |
|
|
|
f09e2e |
@@ -36,6 +37,9 @@
|
|
|
f09e2e |
#include "key.h"
|
|
|
f09e2e |
#include "hostfile.h"
|
|
|
f09e2e |
#include "auth.h"
|
|
|
f09e2e |
+#include "ssh-gss.h"
|
|
|
f09e2e |
+#include "monitor_wrap.h"
|
|
|
f09e2e |
+#include "xmalloc.h"
|
|
|
f09e2e |
|
|
|
f09e2e |
/*
|
|
|
f09e2e |
* Care must be taken when using this since it WILL NOT be initialized when
|
|
|
017ff1 |
@@ -71,13 +75,10 @@ audit_classify_auth(const char *method)
|
|
|
017ff1 |
const char *
|
|
|
017ff1 |
audit_username(void)
|
|
|
017ff1 |
{
|
|
|
017ff1 |
- static const char unknownuser[] = "(unknown user)";
|
|
|
017ff1 |
- static const char invaliduser[] = "(invalid user)";
|
|
|
017ff1 |
+ static const char unknownuser[] = "(unknown)";
|
|
|
017ff1 |
|
|
|
017ff1 |
- if (the_authctxt == NULL || the_authctxt->user == NULL)
|
|
|
017ff1 |
+ if (the_authctxt == NULL || the_authctxt->user == NULL || !the_authctxt->valid)
|
|
|
017ff1 |
return (unknownuser);
|
|
|
017ff1 |
- if (!the_authctxt->valid)
|
|
|
017ff1 |
- return (invaliduser);
|
|
|
017ff1 |
return (the_authctxt->user);
|
|
|
017ff1 |
}
|
|
|
017ff1 |
|
|
|
017ff1 |
@@ -111,6 +112,40 @@ audit_event_lookup(ssh_audit_event_t ev)
|
|
|
f09e2e |
return(event_lookup[i].name);
|
|
|
f09e2e |
}
|
|
|
f09e2e |
|
|
|
f09e2e |
+void
|
|
|
f09e2e |
+audit_key(int host_user, int *rv, const Key *key)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+ char *fp;
|
|
|
f09e2e |
+ const char *crypto_name;
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ fp = key_selected_fingerprint(key, SSH_FP_HEX);
|
|
|
f09e2e |
+ if (key->type == KEY_RSA1)
|
|
|
f09e2e |
+ crypto_name = "ssh-rsa1";
|
|
|
f09e2e |
+ else
|
|
|
f09e2e |
+ crypto_name = key_ssh_name(key);
|
|
|
f09e2e |
+ if (audit_keyusage(host_user, crypto_name, key_size(key), fp, *rv) == 0)
|
|
|
f09e2e |
+ *rv = 0;
|
|
|
f09e2e |
+ free(fp);
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+void
|
|
|
f09e2e |
+audit_unsupported(int what)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+ PRIVSEP(audit_unsupported_body(what));
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+void
|
|
|
f09e2e |
+audit_kex(int ctos, char *enc, char *mac, char *comp)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+ PRIVSEP(audit_kex_body(ctos, enc, mac, comp, getpid(), getuid()));
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+void
|
|
|
f09e2e |
+audit_session_key_free(int ctos)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+ PRIVSEP(audit_session_key_free_body(ctos, getpid(), getuid()));
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+
|
|
|
f09e2e |
# ifndef CUSTOM_SSH_AUDIT_EVENTS
|
|
|
f09e2e |
/*
|
|
|
f09e2e |
* Null implementations of audit functions.
|
|
|
017ff1 |
@@ -140,6 +175,17 @@ audit_event(ssh_audit_event_t event)
|
|
|
f09e2e |
}
|
|
|
f09e2e |
|
|
|
f09e2e |
/*
|
|
|
f09e2e |
+ * Called when a child process has called, or will soon call,
|
|
|
f09e2e |
+ * audit_session_open.
|
|
|
f09e2e |
+ */
|
|
|
f09e2e |
+void
|
|
|
f09e2e |
+audit_count_session_open(void)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+ debug("audit count session open euid %d user %s", geteuid(),
|
|
|
f09e2e |
+ audit_username());
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+/*
|
|
|
f09e2e |
* Called when a user session is started. Argument is the tty allocated to
|
|
|
f09e2e |
* the session, or NULL if no tty was allocated.
|
|
|
f09e2e |
*
|
|
|
017ff1 |
@@ -174,13 +220,91 @@ audit_session_close(struct logininfo *li)
|
|
|
f09e2e |
/*
|
|
|
f09e2e |
* This will be called when a user runs a non-interactive command. Note that
|
|
|
f09e2e |
* it may be called multiple times for a single connection since SSH2 allows
|
|
|
f09e2e |
- * multiple sessions within a single connection.
|
|
|
f09e2e |
+ * multiple sessions within a single connection. Returns a "handle" for
|
|
|
f09e2e |
+ * audit_end_command.
|
|
|
f09e2e |
*/
|
|
|
f09e2e |
-void
|
|
|
f09e2e |
+int
|
|
|
f09e2e |
audit_run_command(const char *command)
|
|
|
f09e2e |
{
|
|
|
f09e2e |
debug("audit run command euid %d user %s command '%.200s'", geteuid(),
|
|
|
f09e2e |
audit_username(), command);
|
|
|
f09e2e |
+ return 0;
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+/*
|
|
|
f09e2e |
+ * This will be called when the non-interactive command finishes. Note that
|
|
|
f09e2e |
+ * it may be called multiple times for a single connection since SSH2 allows
|
|
|
f09e2e |
+ * multiple sessions within a single connection. "handle" should come from
|
|
|
f09e2e |
+ * the corresponding audit_run_command.
|
|
|
f09e2e |
+ */
|
|
|
f09e2e |
+void
|
|
|
f09e2e |
+audit_end_command(int handle, const char *command)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+ debug("audit end nopty exec euid %d user %s command '%.200s'", geteuid(),
|
|
|
f09e2e |
+ audit_username(), command);
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+/*
|
|
|
f09e2e |
+ * This will be called when user is successfully autherized by the RSA1/RSA/DSA key.
|
|
|
f09e2e |
+ *
|
|
|
f09e2e |
+ * Type is the key type, len is the key length(byte) and fp is the fingerprint of the key.
|
|
|
f09e2e |
+ */
|
|
|
f09e2e |
+int
|
|
|
f09e2e |
+audit_keyusage(int host_user, const char *type, unsigned bits, char *fp, int rv)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+ debug("audit %s key usage euid %d user %s key type %s key length %d fingerprint %s%s, result %d",
|
|
|
f09e2e |
+ host_user ? "pubkey" : "hostbased", geteuid(), audit_username(), type, bits,
|
|
|
f09e2e |
+ key_fingerprint_prefix(), fp, rv);
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+/*
|
|
|
f09e2e |
+ * This will be called when the protocol negotiation fails.
|
|
|
f09e2e |
+ */
|
|
|
f09e2e |
+void
|
|
|
f09e2e |
+audit_unsupported_body(int what)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+ debug("audit unsupported protocol euid %d type %d", geteuid(), what);
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+/*
|
|
|
f09e2e |
+ * This will be called on succesfull protocol negotiation.
|
|
|
f09e2e |
+ */
|
|
|
f09e2e |
+void
|
|
|
f09e2e |
+audit_kex_body(int ctos, char *enc, char *mac, char *compress, pid_t pid,
|
|
|
f09e2e |
+ uid_t uid)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+ debug("audit protocol negotiation euid %d direction %d cipher %s mac %s compresion %s from pid %ld uid %u",
|
|
|
f09e2e |
+ (unsigned)geteuid(), ctos, enc, mac, compress, (long)pid,
|
|
|
f09e2e |
+ (unsigned)uid);
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+/*
|
|
|
f09e2e |
+ * This will be called on succesfull session key discard
|
|
|
f09e2e |
+ */
|
|
|
f09e2e |
+void
|
|
|
f09e2e |
+audit_session_key_free_body(int ctos, pid_t pid, uid_t uid)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+ debug("audit session key discard euid %u direction %d from pid %ld uid %u",
|
|
|
f09e2e |
+ (unsigned)geteuid(), ctos, (long)pid, (unsigned)uid);
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+/*
|
|
|
f09e2e |
+ * This will be called on destroy private part of the server key
|
|
|
f09e2e |
+ */
|
|
|
f09e2e |
+void
|
|
|
f09e2e |
+audit_destroy_sensitive_data(const char *fp, pid_t pid, uid_t uid)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+ debug("audit destroy sensitive data euid %d fingerprint %s from pid %ld uid %u",
|
|
|
f09e2e |
+ geteuid(), fp, (long)pid, (unsigned)uid);
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+/*
|
|
|
f09e2e |
+ * This will be called on generation of the ephemeral server key
|
|
|
f09e2e |
+ */
|
|
|
f09e2e |
+void
|
|
|
f09e2e |
+audit_generate_ephemeral_server_key(const char *)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+ debug("audit create ephemeral server key euid %d fingerprint %s", geteuid(), fp);
|
|
|
f09e2e |
}
|
|
|
f09e2e |
# endif /* !defined CUSTOM_SSH_AUDIT_EVENTS */
|
|
|
f09e2e |
#endif /* SSH_AUDIT_EVENTS */
|
|
|
017ff1 |
diff --git a/audit.h b/audit.h
|
|
|
017ff1 |
index 92ede5b..a2dc3ff 100644
|
|
|
017ff1 |
--- a/audit.h
|
|
|
017ff1 |
+++ b/audit.h
|
|
|
f09e2e |
@@ -28,6 +28,7 @@
|
|
|
f09e2e |
# define _SSH_AUDIT_H
|
|
|
f09e2e |
|
|
|
f09e2e |
#include "loginrec.h"
|
|
|
f09e2e |
+#include "key.h"
|
|
|
f09e2e |
|
|
|
f09e2e |
enum ssh_audit_event_type {
|
|
|
f09e2e |
SSH_LOGIN_EXCEED_MAXTRIES,
|
|
|
f09e2e |
@@ -47,11 +48,25 @@ enum ssh_audit_event_type {
|
|
|
f09e2e |
};
|
|
|
f09e2e |
typedef enum ssh_audit_event_type ssh_audit_event_t;
|
|
|
f09e2e |
|
|
|
f09e2e |
+int listening_for_clients(void);
|
|
|
f09e2e |
+
|
|
|
f09e2e |
void audit_connection_from(const char *, int);
|
|
|
f09e2e |
void audit_event(ssh_audit_event_t);
|
|
|
f09e2e |
+void audit_count_session_open(void);
|
|
|
f09e2e |
void audit_session_open(struct logininfo *);
|
|
|
f09e2e |
void audit_session_close(struct logininfo *);
|
|
|
f09e2e |
-void audit_run_command(const char *);
|
|
|
f09e2e |
+int audit_run_command(const char *);
|
|
|
f09e2e |
+void audit_end_command(int, const char *);
|
|
|
f09e2e |
ssh_audit_event_t audit_classify_auth(const char *);
|
|
|
f09e2e |
+int audit_keyusage(int, const char *, unsigned, char *, int);
|
|
|
f09e2e |
+void audit_key(int, int *, const Key *);
|
|
|
f09e2e |
+void audit_unsupported(int);
|
|
|
f09e2e |
+void audit_kex(int, char *, char *, char *);
|
|
|
f09e2e |
+void audit_unsupported_body(int);
|
|
|
f09e2e |
+void audit_kex_body(int, char *, char *, char *, pid_t, uid_t);
|
|
|
f09e2e |
+void audit_session_key_free(int ctos);
|
|
|
f09e2e |
+void audit_session_key_free_body(int ctos, pid_t, uid_t);
|
|
|
f09e2e |
+void audit_destroy_sensitive_data(const char *, pid_t, uid_t);
|
|
|
f09e2e |
+void audit_generate_ephemeral_server_key(const char *);
|
|
|
f09e2e |
|
|
|
f09e2e |
#endif /* _SSH_AUDIT_H */
|
|
|
017ff1 |
diff --git a/auditstub.c b/auditstub.c
|
|
|
017ff1 |
new file mode 100644
|
|
|
017ff1 |
index 0000000..45817e0
|
|
|
017ff1 |
--- /dev/null
|
|
|
017ff1 |
+++ b/auditstub.c
|
|
|
f09e2e |
@@ -0,0 +1,50 @@
|
|
|
f09e2e |
+/* $Id: auditstub.c,v 1.1 jfch Exp $ */
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+/*
|
|
|
f09e2e |
+ * Copyright 2010 Red Hat, Inc. All rights reserved.
|
|
|
f09e2e |
+ * Use is subject to license terms.
|
|
|
f09e2e |
+ *
|
|
|
f09e2e |
+ * Redistribution and use in source and binary forms, with or without
|
|
|
f09e2e |
+ * modification, are permitted provided that the following conditions
|
|
|
f09e2e |
+ * are met:
|
|
|
f09e2e |
+ * 1. Redistributions of source code must retain the above copyright
|
|
|
f09e2e |
+ * notice, this list of conditions and the following disclaimer.
|
|
|
f09e2e |
+ * 2. Redistributions in binary form must reproduce the above copyright
|
|
|
f09e2e |
+ * notice, this list of conditions and the following disclaimer in the
|
|
|
f09e2e |
+ * documentation and/or other materials provided with the distribution.
|
|
|
f09e2e |
+ *
|
|
|
f09e2e |
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
|
f09e2e |
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
|
f09e2e |
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
|
f09e2e |
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
|
f09e2e |
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
|
f09e2e |
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
|
f09e2e |
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
|
f09e2e |
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
|
f09e2e |
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
|
f09e2e |
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
|
f09e2e |
+ *
|
|
|
f09e2e |
+ * Red Hat author: Jan F. Chadima <jchadima@redhat.com>
|
|
|
f09e2e |
+ */
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+#include <sys/types.h>
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+void
|
|
|
f09e2e |
+audit_unsupported(int n)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+void
|
|
|
f09e2e |
+audit_kex(int ctos, char *enc, char *mac, char *comp)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+void
|
|
|
f09e2e |
+audit_session_key_free(int ctos)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+void
|
|
|
f09e2e |
+audit_session_key_free_body(int ctos, pid_t pid, uid_t uid)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+}
|
|
|
017ff1 |
diff --git a/auth-rsa.c b/auth-rsa.c
|
|
|
017ff1 |
index 5dad6c3..f225b0b 100644
|
|
|
017ff1 |
--- a/auth-rsa.c
|
|
|
017ff1 |
+++ b/auth-rsa.c
|
|
|
017ff1 |
@@ -93,7 +93,10 @@ auth_rsa_verify_response(Key *key, BIGNUM *challenge, u_char response[16])
|
|
|
f09e2e |
{
|
|
|
f09e2e |
u_char buf[32], mdbuf[16];
|
|
|
017ff1 |
struct ssh_digest_ctx *md;
|
|
|
f09e2e |
- int len;
|
|
|
f09e2e |
+ int len, rv;
|
|
|
f09e2e |
+#ifdef SSH_AUDIT_EVENTS
|
|
|
f09e2e |
+ char *fp;
|
|
|
f09e2e |
+#endif
|
|
|
f09e2e |
|
|
|
f09e2e |
/* don't allow short keys */
|
|
|
f09e2e |
if (BN_num_bits(key->rsa->n) < SSH_RSA_MINIMUM_MODULUS_SIZE) {
|
|
|
017ff1 |
@@ -117,12 +120,18 @@ auth_rsa_verify_response(Key *key, BIGNUM *challenge, u_char response[16])
|
|
|
017ff1 |
ssh_digest_free(md);
|
|
|
f09e2e |
|
|
|
f09e2e |
/* Verify that the response is the original challenge. */
|
|
|
f09e2e |
- if (timingsafe_bcmp(response, mdbuf, 16) != 0) {
|
|
|
f09e2e |
- /* Wrong answer. */
|
|
|
f09e2e |
- return (0);
|
|
|
f09e2e |
+ rv = timingsafe_bcmp(response, mdbuf, 16) == 0;
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+#ifdef SSH_AUDIT_EVENTS
|
|
|
f09e2e |
+ fp = key_selected_fingerprint(key, SSH_FP_HEX);
|
|
|
f09e2e |
+ if (audit_keyusage(1, "ssh-rsa1", RSA_size(key->rsa) * 8, fp, rv) == 0) {
|
|
|
f09e2e |
+ debug("unsuccessful audit");
|
|
|
f09e2e |
+ rv = 0;
|
|
|
f09e2e |
}
|
|
|
f09e2e |
- /* Correct answer. */
|
|
|
f09e2e |
- return (1);
|
|
|
f09e2e |
+ free(fp);
|
|
|
f09e2e |
+#endif
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ return rv;
|
|
|
f09e2e |
}
|
|
|
f09e2e |
|
|
|
f09e2e |
/*
|
|
|
017ff1 |
diff --git a/auth.c b/auth.c
|
|
|
017ff1 |
index 420a85b..d613f8c 100644
|
|
|
017ff1 |
--- a/auth.c
|
|
|
017ff1 |
+++ b/auth.c
|
|
|
017ff1 |
@@ -628,9 +628,6 @@ getpwnamallow(const char *user)
|
|
|
017ff1 |
record_failed_login(user,
|
|
|
017ff1 |
get_canonical_hostname(options.use_dns), "ssh");
|
|
|
017ff1 |
#endif
|
|
|
017ff1 |
-#ifdef SSH_AUDIT_EVENTS
|
|
|
017ff1 |
- audit_event(SSH_INVALID_USER);
|
|
|
017ff1 |
-#endif /* SSH_AUDIT_EVENTS */
|
|
|
017ff1 |
return (NULL);
|
|
|
017ff1 |
}
|
|
|
017ff1 |
if (!allowed_user(pw))
|
|
|
017ff1 |
diff --git a/auth.h b/auth.h
|
|
|
017ff1 |
index 4605588..f9d191c 100644
|
|
|
017ff1 |
--- a/auth.h
|
|
|
017ff1 |
+++ b/auth.h
|
|
|
017ff1 |
@@ -186,6 +186,7 @@ void abandon_challenge_response(Authctxt *);
|
|
|
f09e2e |
|
|
|
f09e2e |
char *expand_authorized_keys(const char *, struct passwd *pw);
|
|
|
f09e2e |
char *authorized_principals_file(struct passwd *);
|
|
|
f09e2e |
+int user_key_verify(const Key *, const u_char *, u_int, const u_char *, u_int);
|
|
|
f09e2e |
|
|
|
f09e2e |
FILE *auth_openkeyfile(const char *, struct passwd *, int);
|
|
|
f09e2e |
FILE *auth_openprincipals(const char *, struct passwd *, int);
|
|
|
017ff1 |
@@ -203,6 +204,7 @@ Key *get_hostkey_private_by_type(int);
|
|
|
f09e2e |
int get_hostkey_index(Key *);
|
|
|
f09e2e |
int ssh1_session_key(BIGNUM *);
|
|
|
f09e2e |
void sshd_hostkey_sign(Key *, Key *, u_char **, u_int *, u_char *, u_int);
|
|
|
f09e2e |
+int hostbased_key_verify(const Key *, const u_char *, u_int, const u_char *, u_int);
|
|
|
f09e2e |
|
|
|
f09e2e |
/* debug messages during authentication */
|
|
|
f09e2e |
void auth_debug_add(const char *fmt,...) __attribute__((format(printf, 1, 2)));
|
|
|
017ff1 |
diff --git a/auth2-hostbased.c b/auth2-hostbased.c
|
|
|
017ff1 |
index 95d678e..48aede4 100644
|
|
|
017ff1 |
--- a/auth2-hostbased.c
|
|
|
017ff1 |
+++ b/auth2-hostbased.c
|
|
|
017ff1 |
@@ -137,7 +137,7 @@ userauth_hostbased(Authctxt *authctxt)
|
|
|
f09e2e |
/* test for allowed key and correct signature */
|
|
|
f09e2e |
authenticated = 0;
|
|
|
f09e2e |
if (PRIVSEP(hostbased_key_allowed(authctxt->pw, cuser, chost, key)) &&
|
|
|
f09e2e |
- PRIVSEP(key_verify(key, sig, slen, buffer_ptr(&b),
|
|
|
f09e2e |
+ PRIVSEP(hostbased_key_verify(key, sig, slen, buffer_ptr(&b),
|
|
|
f09e2e |
buffer_len(&b))) == 1)
|
|
|
f09e2e |
authenticated = 1;
|
|
|
f09e2e |
|
|
|
017ff1 |
@@ -154,6 +154,18 @@ done:
|
|
|
f09e2e |
return authenticated;
|
|
|
f09e2e |
}
|
|
|
f09e2e |
|
|
|
f09e2e |
+int
|
|
|
f09e2e |
+hostbased_key_verify(const Key *key, const u_char *sig, u_int slen, const u_char *data, u_int datalen)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+ int rv;
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ rv = key_verify(key, sig, slen, data, datalen);
|
|
|
f09e2e |
+#ifdef SSH_AUDIT_EVENTS
|
|
|
f09e2e |
+ audit_key(0, &rv, key);
|
|
|
f09e2e |
+#endif
|
|
|
f09e2e |
+ return rv;
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+
|
|
|
f09e2e |
/* return 1 if given hostkey is allowed */
|
|
|
f09e2e |
int
|
|
|
f09e2e |
hostbased_key_allowed(struct passwd *pw, const char *cuser, char *chost,
|
|
|
017ff1 |
diff --git a/auth2-pubkey.c b/auth2-pubkey.c
|
|
|
017ff1 |
index cb0f931..6d1c872 100644
|
|
|
017ff1 |
--- a/auth2-pubkey.c
|
|
|
017ff1 |
+++ b/auth2-pubkey.c
|
|
|
017ff1 |
@@ -160,7 +160,7 @@ userauth_pubkey(Authctxt *authctxt)
|
|
|
f09e2e |
/* test for correct signature */
|
|
|
f09e2e |
authenticated = 0;
|
|
|
f09e2e |
if (PRIVSEP(user_key_allowed(authctxt->pw, key)) &&
|
|
|
f09e2e |
- PRIVSEP(key_verify(key, sig, slen, buffer_ptr(&b),
|
|
|
f09e2e |
+ PRIVSEP(user_key_verify(key, sig, slen, buffer_ptr(&b),
|
|
|
f09e2e |
buffer_len(&b))) == 1)
|
|
|
f09e2e |
authenticated = 1;
|
|
|
f09e2e |
buffer_free(&b);
|
|
|
017ff1 |
@@ -231,6 +231,18 @@ pubkey_auth_info(Authctxt *authctxt, const Key *key, const char *fmt, ...)
|
|
|
f09e2e |
free(extra);
|
|
|
f09e2e |
}
|
|
|
f09e2e |
|
|
|
f09e2e |
+int
|
|
|
f09e2e |
+user_key_verify(const Key *key, const u_char *sig, u_int slen, const u_char *data, u_int datalen)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+ int rv;
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ rv = key_verify(key, sig, slen, data, datalen);
|
|
|
f09e2e |
+#ifdef SSH_AUDIT_EVENTS
|
|
|
f09e2e |
+ audit_key(1, &rv, key);
|
|
|
f09e2e |
+#endif
|
|
|
f09e2e |
+ return rv;
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+
|
|
|
f09e2e |
static int
|
|
|
f09e2e |
match_principals_option(const char *principal_list, struct KeyCert *cert)
|
|
|
f09e2e |
{
|
|
|
017ff1 |
diff --git a/auth2.c b/auth2.c
|
|
|
017ff1 |
index 426dcd6..436cd60 100644
|
|
|
017ff1 |
--- a/auth2.c
|
|
|
017ff1 |
+++ b/auth2.c
|
|
|
017ff1 |
@@ -249,9 +249,6 @@ input_userauth_request(int type, u_int32_t seq, void *ctxt)
|
|
|
f09e2e |
} else {
|
|
|
f09e2e |
logit("input_userauth_request: invalid user %s", user);
|
|
|
f09e2e |
authctxt->pw = fakepw();
|
|
|
f09e2e |
-#ifdef SSH_AUDIT_EVENTS
|
|
|
f09e2e |
- PRIVSEP(audit_event(SSH_INVALID_USER));
|
|
|
f09e2e |
-#endif
|
|
|
f09e2e |
}
|
|
|
f09e2e |
#ifdef USE_PAM
|
|
|
f09e2e |
if (options.use_pam)
|
|
|
017ff1 |
diff --git a/cipher.c b/cipher.c
|
|
|
017ff1 |
index 53d9b4f..226e56d 100644
|
|
|
017ff1 |
--- a/cipher.c
|
|
|
017ff1 |
+++ b/cipher.c
|
|
|
017ff1 |
@@ -57,20 +57,6 @@ extern const EVP_CIPHER *evp_ssh1_bf(void);
|
|
|
f09e2e |
extern const EVP_CIPHER *evp_ssh1_3des(void);
|
|
|
f09e2e |
extern void ssh1_3des_iv(EVP_CIPHER_CTX *, int, u_char *, int);
|
|
|
f09e2e |
|
|
|
f09e2e |
-struct Cipher {
|
|
|
f09e2e |
- char *name;
|
|
|
f09e2e |
- int number; /* for ssh1 only */
|
|
|
f09e2e |
- u_int block_size;
|
|
|
f09e2e |
- u_int key_len;
|
|
|
f09e2e |
- u_int iv_len; /* defaults to block_size */
|
|
|
f09e2e |
- u_int auth_len;
|
|
|
f09e2e |
- u_int discard_len;
|
|
|
017ff1 |
- u_int flags;
|
|
|
017ff1 |
-#define CFLAG_CBC (1<<0)
|
|
|
017ff1 |
-#define CFLAG_CHACHAPOLY (1<<1)
|
|
|
f09e2e |
- const EVP_CIPHER *(*evptype)(void);
|
|
|
f09e2e |
-};
|
|
|
f09e2e |
-
|
|
|
f09e2e |
static const struct Cipher ciphers[] = {
|
|
|
f09e2e |
{ "none", SSH_CIPHER_NONE, 8, 0, 0, 0, 0, 0, EVP_enc_null },
|
|
|
f09e2e |
{ "des", SSH_CIPHER_DES, 8, 8, 0, 0, 0, 1, EVP_des_cbc },
|
|
|
017ff1 |
diff --git a/cipher.h b/cipher.h
|
|
|
017ff1 |
index 133d2e7..d41758e 100644
|
|
|
017ff1 |
--- a/cipher.h
|
|
|
017ff1 |
+++ b/cipher.h
|
|
|
017ff1 |
@@ -63,7 +63,20 @@
|
|
|
f09e2e |
typedef struct Cipher Cipher;
|
|
|
f09e2e |
typedef struct CipherContext CipherContext;
|
|
|
f09e2e |
|
|
|
f09e2e |
-struct Cipher;
|
|
|
f09e2e |
+struct Cipher {
|
|
|
f09e2e |
+ char *name;
|
|
|
f09e2e |
+ int number; /* for ssh1 only */
|
|
|
f09e2e |
+ u_int block_size;
|
|
|
f09e2e |
+ u_int key_len;
|
|
|
f09e2e |
+ u_int iv_len; /* defaults to block_size */
|
|
|
f09e2e |
+ u_int auth_len;
|
|
|
f09e2e |
+ u_int discard_len;
|
|
|
017ff1 |
+ u_int flags;
|
|
|
017ff1 |
+#define CFLAG_CBC (1<<0)
|
|
|
017ff1 |
+#define CFLAG_CHACHAPOLY (1<<1)
|
|
|
f09e2e |
+ const EVP_CIPHER *(*evptype)(void);
|
|
|
f09e2e |
+};
|
|
|
f09e2e |
+
|
|
|
f09e2e |
struct CipherContext {
|
|
|
f09e2e |
int plaintext;
|
|
|
f09e2e |
int encrypt;
|
|
|
017ff1 |
diff --git a/kex.c b/kex.c
|
|
|
017ff1 |
index bce2ab8..bc3e53e 100644
|
|
|
017ff1 |
--- a/kex.c
|
|
|
017ff1 |
+++ b/kex.c
|
|
|
017ff1 |
@@ -50,6 +50,7 @@
|
|
|
f09e2e |
#include "monitor.h"
|
|
|
f09e2e |
#include "roaming.h"
|
|
|
017ff1 |
#include "digest.h"
|
|
|
f09e2e |
+#include "audit.h"
|
|
|
f09e2e |
|
|
|
017ff1 |
#ifdef GSSAPI
|
|
|
017ff1 |
#include "ssh-gss.h"
|
|
|
017ff1 |
@@ -366,9 +367,13 @@ static void
|
|
|
f09e2e |
choose_enc(Enc *enc, char *client, char *server)
|
|
|
f09e2e |
{
|
|
|
f09e2e |
char *name = match_list(client, server, NULL);
|
|
|
f09e2e |
- if (name == NULL)
|
|
|
f09e2e |
+ if (name == NULL) {
|
|
|
f09e2e |
+#ifdef SSH_AUDIT_EVENTS
|
|
|
f09e2e |
+ audit_unsupported(0);
|
|
|
f09e2e |
+#endif
|
|
|
f09e2e |
fatal("no matching cipher found: client %s server %s",
|
|
|
f09e2e |
client, server);
|
|
|
f09e2e |
+ }
|
|
|
f09e2e |
if ((enc->cipher = cipher_by_name(name)) == NULL)
|
|
|
f09e2e |
fatal("matching cipher is not supported: %s", name);
|
|
|
f09e2e |
enc->name = name;
|
|
|
017ff1 |
@@ -384,9 +389,13 @@ static void
|
|
|
f09e2e |
choose_mac(Mac *mac, char *client, char *server)
|
|
|
f09e2e |
{
|
|
|
f09e2e |
char *name = match_list(client, server, NULL);
|
|
|
f09e2e |
- if (name == NULL)
|
|
|
f09e2e |
+ if (name == NULL) {
|
|
|
f09e2e |
+#ifdef SSH_AUDIT_EVENTS
|
|
|
f09e2e |
+ audit_unsupported(1);
|
|
|
f09e2e |
+#endif
|
|
|
f09e2e |
fatal("no matching mac found: client %s server %s",
|
|
|
f09e2e |
client, server);
|
|
|
f09e2e |
+ }
|
|
|
f09e2e |
if (mac_setup(mac, name) < 0)
|
|
|
f09e2e |
fatal("unsupported mac %s", name);
|
|
|
f09e2e |
/* truncate the key */
|
|
|
017ff1 |
@@ -401,8 +410,12 @@ static void
|
|
|
f09e2e |
choose_comp(Comp *comp, char *client, char *server)
|
|
|
f09e2e |
{
|
|
|
f09e2e |
char *name = match_list(client, server, NULL);
|
|
|
f09e2e |
- if (name == NULL)
|
|
|
f09e2e |
+ if (name == NULL) {
|
|
|
f09e2e |
+#ifdef SSH_AUDIT_EVENTS
|
|
|
f09e2e |
+ audit_unsupported(2);
|
|
|
f09e2e |
+#endif
|
|
|
f09e2e |
fatal("no matching comp found: client %s server %s", client, server);
|
|
|
f09e2e |
+ }
|
|
|
f09e2e |
if (strcmp(name, "zlib@openssh.com") == 0) {
|
|
|
f09e2e |
comp->type = COMP_DELAYED;
|
|
|
f09e2e |
} else if (strcmp(name, "zlib") == 0) {
|
|
|
017ff1 |
@@ -517,6 +530,9 @@ kex_choose_conf(Kex *kex)
|
|
|
f09e2e |
newkeys->enc.name,
|
|
|
f09e2e |
authlen == 0 ? newkeys->mac.name : "<implicit>",
|
|
|
f09e2e |
newkeys->comp.name);
|
|
|
f09e2e |
+#ifdef SSH_AUDIT_EVENTS
|
|
|
f09e2e |
+ audit_kex(ctos, newkeys->enc.name, newkeys->mac.name, newkeys->comp.name);
|
|
|
f09e2e |
+#endif
|
|
|
f09e2e |
}
|
|
|
f09e2e |
choose_kex(kex, cprop[PROPOSAL_KEX_ALGS], sprop[PROPOSAL_KEX_ALGS]);
|
|
|
f09e2e |
choose_hostkeyalg(kex, cprop[PROPOSAL_SERVER_HOST_KEY_ALGS],
|
|
|
674526 |
@@ -702,3 +718,53 @@ dump_digest(char *msg, u_char *digest, int len)
|
|
|
f09e2e |
fprintf(stderr, "\n");
|
|
|
f09e2e |
}
|
|
|
f09e2e |
#endif
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+static void
|
|
|
f09e2e |
+enc_destroy(Enc *enc)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+ if (enc == NULL)
|
|
|
f09e2e |
+ return;
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ if (enc->key) {
|
|
|
f09e2e |
+ memset(enc->key, 0, enc->key_len);
|
|
|
f09e2e |
+ free(enc->key);
|
|
|
f09e2e |
+ }
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ if (enc->iv) {
|
|
|
f09e2e |
+ memset(enc->iv, 0, enc->block_size);
|
|
|
f09e2e |
+ free(enc->iv);
|
|
|
f09e2e |
+ }
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ memset(enc, 0, sizeof(*enc));
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+void
|
|
|
f09e2e |
+newkeys_destroy(Newkeys *newkeys)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+ if (newkeys == NULL)
|
|
|
f09e2e |
+ return;
|
|
|
f09e2e |
+
|
|
|
674526 |
+ free(newkeys->enc.name);
|
|
|
f09e2e |
+ enc_destroy(&newkeys->enc);
|
|
|
674526 |
+
|
|
|
674526 |
+ if (newkeys->mac.enabled) {
|
|
|
674526 |
+ mac_clear(&newkeys->mac);
|
|
|
674526 |
+ free(newkeys->mac.name);
|
|
|
674526 |
+ mac_destroy(&newkeys->mac);
|
|
|
674526 |
+ }
|
|
|
674526 |
+
|
|
|
674526 |
+ free(newkeys->comp.name);
|
|
|
674526 |
+
|
|
|
f09e2e |
+ memset(&newkeys->comp, 0, sizeof(newkeys->comp));
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+
|
|
|
674526 |
+void
|
|
|
674526 |
+newkeys_destroy_and_free(Newkeys *newkeys)
|
|
|
674526 |
+{
|
|
|
674526 |
+ if (newkeys == NULL)
|
|
|
674526 |
+ return;
|
|
|
674526 |
+
|
|
|
674526 |
+ newkeys_destroy(newkeys);
|
|
|
674526 |
+ free(newkeys);
|
|
|
674526 |
+}
|
|
|
674526 |
+
|
|
|
017ff1 |
diff --git a/kex.h b/kex.h
|
|
|
017ff1 |
index 313bb51..c643250 100644
|
|
|
017ff1 |
--- a/kex.h
|
|
|
017ff1 |
+++ b/kex.h
|
|
|
674526 |
@@ -182,6 +182,9 @@ void kexgss_client(Kex *);
|
|
|
017ff1 |
void kexgss_server(Kex *);
|
|
|
017ff1 |
#endif
|
|
|
f09e2e |
|
|
|
f09e2e |
+void newkeys_destroy(Newkeys *newkeys);
|
|
|
674526 |
+void newkeys_destroy_and_free(Newkeys *newkeys);
|
|
|
f09e2e |
+
|
|
|
f09e2e |
void
|
|
|
f09e2e |
kex_dh_hash(char *, char *, char *, int, char *, int, u_char *, int,
|
|
|
f09e2e |
BIGNUM *, BIGNUM *, BIGNUM *, u_char **, u_int *);
|
|
|
017ff1 |
diff --git a/key.c b/key.c
|
|
|
017ff1 |
index 900b9e3..62f3edb 100644
|
|
|
017ff1 |
--- a/key.c
|
|
|
017ff1 |
+++ b/key.c
|
|
|
017ff1 |
@@ -1925,6 +1925,33 @@ key_demote(const Key *k)
|
|
|
f09e2e |
}
|
|
|
f09e2e |
|
|
|
f09e2e |
int
|
|
|
f09e2e |
+key_is_private(const Key *k)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+ switch (k->type) {
|
|
|
f09e2e |
+ case KEY_RSA_CERT_V00:
|
|
|
f09e2e |
+ case KEY_RSA_CERT:
|
|
|
f09e2e |
+ case KEY_RSA1:
|
|
|
f09e2e |
+ case KEY_RSA:
|
|
|
f09e2e |
+ return k->rsa->d != NULL;
|
|
|
f09e2e |
+ case KEY_DSA_CERT_V00:
|
|
|
f09e2e |
+ case KEY_DSA_CERT:
|
|
|
f09e2e |
+ case KEY_DSA:
|
|
|
f09e2e |
+ return k->dsa->priv_key != NULL;
|
|
|
f09e2e |
+#ifdef OPENSSL_HAS_ECC
|
|
|
f09e2e |
+ case KEY_ECDSA_CERT:
|
|
|
f09e2e |
+ case KEY_ECDSA:
|
|
|
f09e2e |
+ return EC_KEY_get0_private_key(k->ecdsa) != NULL;
|
|
|
f09e2e |
+#endif
|
|
|
017ff1 |
+ case KEY_ED25519_CERT:
|
|
|
017ff1 |
+ case KEY_ED25519:
|
|
|
017ff1 |
+ return (k->ed25519_pk != NULL);
|
|
|
f09e2e |
+ default:
|
|
|
f09e2e |
+ fatal("key_is_private: bad key type %d", k->type);
|
|
|
f09e2e |
+ return 1;
|
|
|
f09e2e |
+ }
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+int
|
|
|
f09e2e |
key_is_cert(const Key *k)
|
|
|
f09e2e |
{
|
|
|
f09e2e |
if (k == NULL)
|
|
|
017ff1 |
diff --git a/key.h b/key.h
|
|
|
017ff1 |
index d51ed81..8f61605 100644
|
|
|
017ff1 |
--- a/key.h
|
|
|
017ff1 |
+++ b/key.h
|
|
|
017ff1 |
@@ -118,6 +118,7 @@ Key *key_generate(int, u_int);
|
|
|
f09e2e |
Key *key_from_private(const Key *);
|
|
|
f09e2e |
int key_type_from_name(char *);
|
|
|
f09e2e |
int key_is_cert(const Key *);
|
|
|
f09e2e |
+int key_is_private(const Key *k);
|
|
|
017ff1 |
int key_type_is_cert(int);
|
|
|
f09e2e |
int key_type_plain(int);
|
|
|
f09e2e |
int key_to_certified(Key *, int);
|
|
|
017ff1 |
diff --git a/mac.c b/mac.c
|
|
|
017ff1 |
index 0977572..9388af4 100644
|
|
|
017ff1 |
--- a/mac.c
|
|
|
017ff1 |
+++ b/mac.c
|
|
|
017ff1 |
@@ -222,6 +222,20 @@ mac_clear(Mac *mac)
|
|
|
f09e2e |
mac->umac_ctx = NULL;
|
|
|
f09e2e |
}
|
|
|
f09e2e |
|
|
|
f09e2e |
+void
|
|
|
f09e2e |
+mac_destroy(Mac *mac)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+ if (mac == NULL)
|
|
|
f09e2e |
+ return;
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ if (mac->key) {
|
|
|
f09e2e |
+ memset(mac->key, 0, mac->key_len);
|
|
|
f09e2e |
+ free(mac->key);
|
|
|
f09e2e |
+ }
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ memset(mac, 0, sizeof(*mac));
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+
|
|
|
f09e2e |
/* XXX copied from ciphers_valid */
|
|
|
f09e2e |
#define MAC_SEP ","
|
|
|
f09e2e |
int
|
|
|
017ff1 |
diff --git a/mac.h b/mac.h
|
|
|
017ff1 |
index fbe18c4..7dc7f43 100644
|
|
|
017ff1 |
--- a/mac.h
|
|
|
017ff1 |
+++ b/mac.h
|
|
|
f09e2e |
@@ -29,3 +29,4 @@ int mac_setup(Mac *, char *);
|
|
|
f09e2e |
int mac_init(Mac *);
|
|
|
f09e2e |
u_char *mac_compute(Mac *, u_int32_t, u_char *, int);
|
|
|
f09e2e |
void mac_clear(Mac *);
|
|
|
f09e2e |
+void mac_destroy(Mac *);
|
|
|
017ff1 |
diff --git a/monitor.c b/monitor.c
|
|
|
017ff1 |
index 8b18086..5a65114 100644
|
|
|
017ff1 |
--- a/monitor.c
|
|
|
017ff1 |
+++ b/monitor.c
|
|
|
017ff1 |
@@ -97,6 +97,7 @@
|
|
|
017ff1 |
#include "ssh2.h"
|
|
|
f09e2e |
#include "roaming.h"
|
|
|
f09e2e |
#include "authfd.h"
|
|
|
f09e2e |
+#include "audit.h"
|
|
|
f09e2e |
|
|
|
f09e2e |
#ifdef GSSAPI
|
|
|
f09e2e |
static Gssctxt *gsscontext = NULL;
|
|
|
017ff1 |
@@ -113,6 +114,8 @@ extern Buffer auth_debug;
|
|
|
f09e2e |
extern int auth_debug_init;
|
|
|
f09e2e |
extern Buffer loginmsg;
|
|
|
f09e2e |
|
|
|
f09e2e |
+extern void destroy_sensitive_data(int);
|
|
|
f09e2e |
+
|
|
|
f09e2e |
/* State exported from the child */
|
|
|
f09e2e |
|
|
|
f09e2e |
struct {
|
|
|
017ff1 |
@@ -185,6 +188,11 @@ int mm_answer_gss_updatecreds(int, Buffer *);
|
|
|
f09e2e |
#ifdef SSH_AUDIT_EVENTS
|
|
|
f09e2e |
int mm_answer_audit_event(int, Buffer *);
|
|
|
f09e2e |
int mm_answer_audit_command(int, Buffer *);
|
|
|
f09e2e |
+int mm_answer_audit_end_command(int, Buffer *);
|
|
|
f09e2e |
+int mm_answer_audit_unsupported_body(int, Buffer *);
|
|
|
f09e2e |
+int mm_answer_audit_kex_body(int, Buffer *);
|
|
|
f09e2e |
+int mm_answer_audit_session_key_free_body(int, Buffer *);
|
|
|
f09e2e |
+int mm_answer_audit_server_key_free(int, Buffer *);
|
|
|
f09e2e |
#endif
|
|
|
f09e2e |
|
|
|
f09e2e |
static int monitor_read_log(struct monitor *);
|
|
|
017ff1 |
@@ -239,6 +247,10 @@ struct mon_table mon_dispatch_proto20[] = {
|
|
|
f09e2e |
#endif
|
|
|
f09e2e |
#ifdef SSH_AUDIT_EVENTS
|
|
|
f09e2e |
{MONITOR_REQ_AUDIT_EVENT, MON_PERMIT, mm_answer_audit_event},
|
|
|
f09e2e |
+ {MONITOR_REQ_AUDIT_UNSUPPORTED, MON_PERMIT, mm_answer_audit_unsupported_body},
|
|
|
f09e2e |
+ {MONITOR_REQ_AUDIT_KEX, MON_PERMIT, mm_answer_audit_kex_body},
|
|
|
f09e2e |
+ {MONITOR_REQ_AUDIT_SESSION_KEY_FREE, MON_PERMIT, mm_answer_audit_session_key_free_body},
|
|
|
f09e2e |
+ {MONITOR_REQ_AUDIT_SERVER_KEY_FREE, MON_PERMIT, mm_answer_audit_server_key_free},
|
|
|
f09e2e |
#endif
|
|
|
f09e2e |
#ifdef BSD_AUTH
|
|
|
f09e2e |
{MONITOR_REQ_BSDAUTHQUERY, MON_ISAUTH, mm_answer_bsdauthquery},
|
|
|
017ff1 |
@@ -274,6 +286,11 @@ struct mon_table mon_dispatch_postauth20[] = {
|
|
|
f09e2e |
#ifdef SSH_AUDIT_EVENTS
|
|
|
f09e2e |
{MONITOR_REQ_AUDIT_EVENT, MON_PERMIT, mm_answer_audit_event},
|
|
|
f09e2e |
{MONITOR_REQ_AUDIT_COMMAND, MON_PERMIT, mm_answer_audit_command},
|
|
|
f09e2e |
+ {MONITOR_REQ_AUDIT_END_COMMAND, MON_PERMIT, mm_answer_audit_end_command},
|
|
|
f09e2e |
+ {MONITOR_REQ_AUDIT_UNSUPPORTED, MON_PERMIT, mm_answer_audit_unsupported_body},
|
|
|
f09e2e |
+ {MONITOR_REQ_AUDIT_KEX, MON_PERMIT, mm_answer_audit_kex_body},
|
|
|
f09e2e |
+ {MONITOR_REQ_AUDIT_SESSION_KEY_FREE, MON_PERMIT, mm_answer_audit_session_key_free_body},
|
|
|
f09e2e |
+ {MONITOR_REQ_AUDIT_SERVER_KEY_FREE, MON_PERMIT, mm_answer_audit_server_key_free},
|
|
|
f09e2e |
#endif
|
|
|
f09e2e |
{0, 0, NULL}
|
|
|
f09e2e |
};
|
|
|
017ff1 |
@@ -305,6 +322,10 @@ struct mon_table mon_dispatch_proto15[] = {
|
|
|
f09e2e |
#endif
|
|
|
f09e2e |
#ifdef SSH_AUDIT_EVENTS
|
|
|
f09e2e |
{MONITOR_REQ_AUDIT_EVENT, MON_PERMIT, mm_answer_audit_event},
|
|
|
f09e2e |
+ {MONITOR_REQ_AUDIT_UNSUPPORTED, MON_PERMIT, mm_answer_audit_unsupported_body},
|
|
|
f09e2e |
+ {MONITOR_REQ_AUDIT_KEX, MON_PERMIT, mm_answer_audit_kex_body},
|
|
|
f09e2e |
+ {MONITOR_REQ_AUDIT_SESSION_KEY_FREE, MON_PERMIT, mm_answer_audit_session_key_free_body},
|
|
|
f09e2e |
+ {MONITOR_REQ_AUDIT_SERVER_KEY_FREE, MON_PERMIT, mm_answer_audit_server_key_free},
|
|
|
f09e2e |
#endif
|
|
|
f09e2e |
{0, 0, NULL}
|
|
|
f09e2e |
};
|
|
|
017ff1 |
@@ -316,6 +337,11 @@ struct mon_table mon_dispatch_postauth15[] = {
|
|
|
f09e2e |
#ifdef SSH_AUDIT_EVENTS
|
|
|
f09e2e |
{MONITOR_REQ_AUDIT_EVENT, MON_PERMIT, mm_answer_audit_event},
|
|
|
f09e2e |
{MONITOR_REQ_AUDIT_COMMAND, MON_PERMIT|MON_ONCE, mm_answer_audit_command},
|
|
|
f09e2e |
+ {MONITOR_REQ_AUDIT_END_COMMAND, MON_PERMIT, mm_answer_audit_end_command},
|
|
|
f09e2e |
+ {MONITOR_REQ_AUDIT_UNSUPPORTED, MON_PERMIT, mm_answer_audit_unsupported_body},
|
|
|
f09e2e |
+ {MONITOR_REQ_AUDIT_KEX, MON_PERMIT, mm_answer_audit_kex_body},
|
|
|
f09e2e |
+ {MONITOR_REQ_AUDIT_SESSION_KEY_FREE, MON_PERMIT, mm_answer_audit_session_key_free_body},
|
|
|
f09e2e |
+ {MONITOR_REQ_AUDIT_SERVER_KEY_FREE, MON_PERMIT, mm_answer_audit_server_key_free},
|
|
|
f09e2e |
#endif
|
|
|
f09e2e |
{0, 0, NULL}
|
|
|
f09e2e |
};
|
|
|
017ff1 |
@@ -1393,9 +1419,11 @@ mm_answer_keyverify(int sock, Buffer *m)
|
|
|
f09e2e |
Key *key;
|
|
|
f09e2e |
u_char *signature, *data, *blob;
|
|
|
f09e2e |
u_int signaturelen, datalen, bloblen;
|
|
|
f09e2e |
+ int type = 0;
|
|
|
f09e2e |
int verified = 0;
|
|
|
f09e2e |
int valid_data = 0;
|
|
|
f09e2e |
|
|
|
f09e2e |
+ type = buffer_get_int(m);
|
|
|
f09e2e |
blob = buffer_get_string(m, &bloblen);
|
|
|
f09e2e |
signature = buffer_get_string(m, &signaturelen);
|
|
|
f09e2e |
data = buffer_get_string(m, &datalen);
|
|
|
017ff1 |
@@ -1403,6 +1431,8 @@ mm_answer_keyverify(int sock, Buffer *m)
|
|
|
f09e2e |
if (hostbased_cuser == NULL || hostbased_chost == NULL ||
|
|
|
f09e2e |
!monitor_allowed_key(blob, bloblen))
|
|
|
f09e2e |
fatal("%s: bad key, not previously allowed", __func__);
|
|
|
f09e2e |
+ if (type != key_blobtype)
|
|
|
f09e2e |
+ fatal("%s: bad key type", __func__);
|
|
|
f09e2e |
|
|
|
f09e2e |
key = key_from_blob(blob, bloblen);
|
|
|
f09e2e |
if (key == NULL)
|
|
|
017ff1 |
@@ -1423,7 +1453,17 @@ mm_answer_keyverify(int sock, Buffer *m)
|
|
|
f09e2e |
if (!valid_data)
|
|
|
f09e2e |
fatal("%s: bad signature data blob", __func__);
|
|
|
f09e2e |
|
|
|
f09e2e |
- verified = key_verify(key, signature, signaturelen, data, datalen);
|
|
|
f09e2e |
+ switch (key_blobtype) {
|
|
|
f09e2e |
+ case MM_USERKEY:
|
|
|
f09e2e |
+ verified = user_key_verify(key, signature, signaturelen, data, datalen);
|
|
|
f09e2e |
+ break;
|
|
|
f09e2e |
+ case MM_HOSTKEY:
|
|
|
f09e2e |
+ verified = hostbased_key_verify(key, signature, signaturelen, data, datalen);
|
|
|
f09e2e |
+ break;
|
|
|
f09e2e |
+ default:
|
|
|
f09e2e |
+ verified = 0;
|
|
|
f09e2e |
+ break;
|
|
|
f09e2e |
+ }
|
|
|
f09e2e |
debug3("%s: key %p signature %s",
|
|
|
f09e2e |
__func__, key, (verified == 1) ? "verified" : "unverified");
|
|
|
f09e2e |
|
|
|
017ff1 |
@@ -1476,6 +1516,12 @@ mm_session_close(Session *s)
|
|
|
f09e2e |
debug3("%s: tty %s ptyfd %d", __func__, s->tty, s->ptyfd);
|
|
|
f09e2e |
session_pty_cleanup2(s);
|
|
|
f09e2e |
}
|
|
|
f09e2e |
+#ifdef SSH_AUDIT_EVENTS
|
|
|
f09e2e |
+ if (s->command != NULL) {
|
|
|
f09e2e |
+ debug3("%s: command %d", __func__, s->command_handle);
|
|
|
f09e2e |
+ session_end_command2(s);
|
|
|
f09e2e |
+ }
|
|
|
f09e2e |
+#endif
|
|
|
f09e2e |
session_unused(s->self);
|
|
|
f09e2e |
}
|
|
|
f09e2e |
|
|
|
017ff1 |
@@ -1756,6 +1802,8 @@ mm_answer_term(int sock, Buffer *req)
|
|
|
f09e2e |
sshpam_cleanup();
|
|
|
f09e2e |
#endif
|
|
|
f09e2e |
|
|
|
f09e2e |
+ destroy_sensitive_data(0);
|
|
|
f09e2e |
+
|
|
|
f09e2e |
while (waitpid(pmonitor->m_pid, &status, 0) == -1)
|
|
|
f09e2e |
if (errno != EINTR)
|
|
|
f09e2e |
exit(1);
|
|
|
017ff1 |
@@ -1798,11 +1846,43 @@ mm_answer_audit_command(int socket, Buffer *m)
|
|
|
f09e2e |
{
|
|
|
f09e2e |
u_int len;
|
|
|
f09e2e |
char *cmd;
|
|
|
f09e2e |
+ Session *s;
|
|
|
f09e2e |
|
|
|
f09e2e |
debug3("%s entering", __func__);
|
|
|
f09e2e |
cmd = buffer_get_string(m, &len;;
|
|
|
f09e2e |
+
|
|
|
f09e2e |
/* sanity check command, if so how? */
|
|
|
f09e2e |
- audit_run_command(cmd);
|
|
|
f09e2e |
+ s = session_new();
|
|
|
f09e2e |
+ if (s == NULL)
|
|
|
f09e2e |
+ fatal("%s: error allocating a session", __func__);
|
|
|
f09e2e |
+ s->command = cmd;
|
|
|
f09e2e |
+ s->command_handle = audit_run_command(cmd);
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ buffer_clear(m);
|
|
|
f09e2e |
+ buffer_put_int(m, s->self);
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ mm_request_send(socket, MONITOR_ANS_AUDIT_COMMAND, m);
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ return (0);
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+int
|
|
|
f09e2e |
+mm_answer_audit_end_command(int socket, Buffer *m)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+ int handle;
|
|
|
f09e2e |
+ u_int len;
|
|
|
f09e2e |
+ char *cmd;
|
|
|
f09e2e |
+ Session *s;
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ debug3("%s entering", __func__);
|
|
|
f09e2e |
+ handle = buffer_get_int(m);
|
|
|
f09e2e |
+ cmd = buffer_get_string(m, &len;;
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ s = session_by_id(handle);
|
|
|
f09e2e |
+ if (s == NULL || s->ttyfd != -1 || s->command == NULL ||
|
|
|
f09e2e |
+ strcmp(s->command, cmd) != 0)
|
|
|
f09e2e |
+ fatal("%s: invalid handle", __func__);
|
|
|
f09e2e |
+ mm_session_close(s);
|
|
|
f09e2e |
free(cmd);
|
|
|
f09e2e |
return (0);
|
|
|
f09e2e |
}
|
|
|
017ff1 |
@@ -1946,11 +2026,13 @@ mm_get_keystate(struct monitor *pmonitor)
|
|
|
f09e2e |
|
|
|
f09e2e |
blob = buffer_get_string(&m, &bloblen);
|
|
|
f09e2e |
current_keys[MODE_OUT] = mm_newkeys_from_blob(blob, bloblen);
|
|
|
f09e2e |
+ memset(blob, 0, bloblen);
|
|
|
f09e2e |
free(blob);
|
|
|
f09e2e |
|
|
|
f09e2e |
debug3("%s: Waiting for second key", __func__);
|
|
|
f09e2e |
blob = buffer_get_string(&m, &bloblen);
|
|
|
f09e2e |
current_keys[MODE_IN] = mm_newkeys_from_blob(blob, bloblen);
|
|
|
f09e2e |
+ memset(blob, 0, bloblen);
|
|
|
f09e2e |
free(blob);
|
|
|
f09e2e |
|
|
|
f09e2e |
/* Now get sequence numbers for the packets */
|
|
|
017ff1 |
@@ -1996,6 +2078,21 @@ mm_get_keystate(struct monitor *pmonitor)
|
|
|
f09e2e |
}
|
|
|
f09e2e |
|
|
|
f09e2e |
buffer_free(&m);
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+#ifdef SSH_AUDIT_EVENTS
|
|
|
f09e2e |
+ if (compat20) {
|
|
|
f09e2e |
+ buffer_init(&m);
|
|
|
f09e2e |
+ mm_request_receive_expect(pmonitor->m_sendfd,
|
|
|
f09e2e |
+ MONITOR_REQ_AUDIT_SESSION_KEY_FREE, &m);
|
|
|
f09e2e |
+ mm_answer_audit_session_key_free_body(pmonitor->m_sendfd, &m);
|
|
|
f09e2e |
+ buffer_free(&m);
|
|
|
f09e2e |
+ }
|
|
|
f09e2e |
+#endif
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ /* Drain any buffered messages from the child */
|
|
|
f09e2e |
+ while (pmonitor->m_log_recvfd >= 0 && monitor_read_log(pmonitor) == 0)
|
|
|
f09e2e |
+ ;
|
|
|
f09e2e |
+
|
|
|
f09e2e |
}
|
|
|
f09e2e |
|
|
|
f09e2e |
|
|
|
674526 |
@@ -2277,3 +2374,84 @@ mm_answer_gss_updatecreds(int socket, Buffer *m) {
|
|
|
017ff1 |
|
|
|
017ff1 |
#endif /* GSSAPI */
|
|
|
f09e2e |
|
|
|
f09e2e |
+#ifdef SSH_AUDIT_EVENTS
|
|
|
f09e2e |
+int
|
|
|
f09e2e |
+mm_answer_audit_unsupported_body(int sock, Buffer *m)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+ int what;
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ what = buffer_get_int(m);
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ audit_unsupported_body(what);
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ buffer_clear(m);
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ mm_request_send(sock, MONITOR_ANS_AUDIT_UNSUPPORTED, m);
|
|
|
f09e2e |
+ return 0;
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+int
|
|
|
f09e2e |
+mm_answer_audit_kex_body(int sock, Buffer *m)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+ int ctos, len;
|
|
|
f09e2e |
+ char *cipher, *mac, *compress;
|
|
|
f09e2e |
+ pid_t pid;
|
|
|
f09e2e |
+ uid_t uid;
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ ctos = buffer_get_int(m);
|
|
|
f09e2e |
+ cipher = buffer_get_string(m, &len;;
|
|
|
f09e2e |
+ mac = buffer_get_string(m, &len;;
|
|
|
f09e2e |
+ compress = buffer_get_string(m, &len;;
|
|
|
f09e2e |
+ pid = buffer_get_int64(m);
|
|
|
f09e2e |
+ uid = buffer_get_int64(m);
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ audit_kex_body(ctos, cipher, mac, compress, pid, uid);
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ free(cipher);
|
|
|
f09e2e |
+ free(mac);
|
|
|
f09e2e |
+ free(compress);
|
|
|
f09e2e |
+ buffer_clear(m);
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ mm_request_send(sock, MONITOR_ANS_AUDIT_KEX, m);
|
|
|
f09e2e |
+ return 0;
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+int
|
|
|
f09e2e |
+mm_answer_audit_session_key_free_body(int sock, Buffer *m)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+ int ctos;
|
|
|
f09e2e |
+ pid_t pid;
|
|
|
f09e2e |
+ uid_t uid;
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ ctos = buffer_get_int(m);
|
|
|
f09e2e |
+ pid = buffer_get_int64(m);
|
|
|
f09e2e |
+ uid = buffer_get_int64(m);
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ audit_session_key_free_body(ctos, pid, uid);
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ buffer_clear(m);
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ mm_request_send(sock, MONITOR_ANS_AUDIT_SESSION_KEY_FREE, m);
|
|
|
f09e2e |
+ return 0;
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+int
|
|
|
f09e2e |
+mm_answer_audit_server_key_free(int sock, Buffer *m)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+ int len;
|
|
|
f09e2e |
+ char *fp;
|
|
|
f09e2e |
+ pid_t pid;
|
|
|
f09e2e |
+ uid_t uid;
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ fp = buffer_get_string(m, &len;;
|
|
|
f09e2e |
+ pid = buffer_get_int64(m);
|
|
|
f09e2e |
+ uid = buffer_get_int64(m);
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ audit_destroy_sensitive_data(fp, pid, uid);
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ free(fp);
|
|
|
f09e2e |
+ buffer_clear(m);
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ return 0;
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+#endif /* SSH_AUDIT_EVENTS */
|
|
|
017ff1 |
diff --git a/monitor.h b/monitor.h
|
|
|
017ff1 |
index ff79fbb..6dfb234 100644
|
|
|
017ff1 |
--- a/monitor.h
|
|
|
017ff1 |
+++ b/monitor.h
|
|
|
017ff1 |
@@ -69,7 +69,13 @@ enum monitor_reqtype {
|
|
|
f09e2e |
MONITOR_REQ_PAM_QUERY = 106, MONITOR_ANS_PAM_QUERY = 107,
|
|
|
f09e2e |
MONITOR_REQ_PAM_RESPOND = 108, MONITOR_ANS_PAM_RESPOND = 109,
|
|
|
f09e2e |
MONITOR_REQ_PAM_FREE_CTX = 110, MONITOR_ANS_PAM_FREE_CTX = 111,
|
|
|
f09e2e |
- MONITOR_REQ_AUDIT_EVENT = 112, MONITOR_REQ_AUDIT_COMMAND = 113,
|
|
|
f09e2e |
+ MONITOR_REQ_AUDIT_EVENT = 112,
|
|
|
f09e2e |
+ MONITOR_REQ_AUDIT_COMMAND = 114, MONITOR_ANS_AUDIT_COMMAND = 115,
|
|
|
f09e2e |
+ MONITOR_REQ_AUDIT_END_COMMAND = 116,
|
|
|
f09e2e |
+ MONITOR_REQ_AUDIT_UNSUPPORTED = 118, MONITOR_ANS_AUDIT_UNSUPPORTED = 119,
|
|
|
f09e2e |
+ MONITOR_REQ_AUDIT_KEX = 120, MONITOR_ANS_AUDIT_KEX = 121,
|
|
|
f09e2e |
+ MONITOR_REQ_AUDIT_SESSION_KEY_FREE = 122, MONITOR_ANS_AUDIT_SESSION_KEY_FREE = 123,
|
|
|
674526 |
+ MONITOR_REQ_AUDIT_SERVER_KEY_FREE = 124
|
|
|
f09e2e |
|
|
|
f09e2e |
};
|
|
|
f09e2e |
|
|
|
017ff1 |
diff --git a/monitor_wrap.c b/monitor_wrap.c
|
|
|
017ff1 |
index d1e1caa..6df236a 100644
|
|
|
017ff1 |
--- a/monitor_wrap.c
|
|
|
017ff1 |
+++ b/monitor_wrap.c
|
|
|
017ff1 |
@@ -450,7 +450,7 @@ mm_key_allowed(enum mm_keytype type, char *user, char *host, Key *key)
|
|
|
f09e2e |
*/
|
|
|
f09e2e |
|
|
|
f09e2e |
int
|
|
|
f09e2e |
-mm_key_verify(Key *key, u_char *sig, u_int siglen, u_char *data, u_int datalen)
|
|
|
f09e2e |
+mm_key_verify(enum mm_keytype type, Key *key, u_char *sig, u_int siglen, u_char *data, u_int datalen)
|
|
|
f09e2e |
{
|
|
|
f09e2e |
Buffer m;
|
|
|
f09e2e |
u_char *blob;
|
|
|
017ff1 |
@@ -464,6 +464,7 @@ mm_key_verify(Key *key, u_char *sig, u_int siglen, u_char *data, u_int datalen)
|
|
|
f09e2e |
return (0);
|
|
|
f09e2e |
|
|
|
f09e2e |
buffer_init(&m);
|
|
|
f09e2e |
+ buffer_put_int(&m, type);
|
|
|
f09e2e |
buffer_put_string(&m, blob, len);
|
|
|
f09e2e |
buffer_put_string(&m, sig, siglen);
|
|
|
f09e2e |
buffer_put_string(&m, data, datalen);
|
|
|
017ff1 |
@@ -481,6 +482,19 @@ mm_key_verify(Key *key, u_char *sig, u_int siglen, u_char *data, u_int datalen)
|
|
|
f09e2e |
return (verified);
|
|
|
f09e2e |
}
|
|
|
f09e2e |
|
|
|
f09e2e |
+int
|
|
|
f09e2e |
+mm_hostbased_key_verify(Key *key, u_char *sig, u_int siglen, u_char *data, u_int datalen)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+ return mm_key_verify(MM_HOSTKEY, key, sig, siglen, data, datalen);
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+int
|
|
|
f09e2e |
+mm_user_key_verify(Key *key, u_char *sig, u_int siglen, u_char *data, u_int datalen)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+ return mm_key_verify(MM_USERKEY, key, sig, siglen, data, datalen);
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+
|
|
|
f09e2e |
/* Export key state after authentication */
|
|
|
f09e2e |
Newkeys *
|
|
|
f09e2e |
mm_newkeys_from_blob(u_char *blob, int blen)
|
|
|
017ff1 |
@@ -659,12 +673,14 @@ mm_send_keystate(struct monitor *monitor)
|
|
|
f09e2e |
fatal("%s: conversion of newkeys failed", __func__);
|
|
|
f09e2e |
|
|
|
f09e2e |
buffer_put_string(&m, blob, bloblen);
|
|
|
f09e2e |
+ memset(blob, 0, bloblen);
|
|
|
f09e2e |
free(blob);
|
|
|
f09e2e |
|
|
|
f09e2e |
if (!mm_newkeys_to_blob(MODE_IN, &blob, &bloblen))
|
|
|
f09e2e |
fatal("%s: conversion of newkeys failed", __func__);
|
|
|
f09e2e |
|
|
|
f09e2e |
buffer_put_string(&m, blob, bloblen);
|
|
|
f09e2e |
+ memset(blob, 0, bloblen);
|
|
|
f09e2e |
free(blob);
|
|
|
f09e2e |
|
|
|
f09e2e |
packet_get_state(MODE_OUT, &seqnr, &blocks, &packets, &bytes);
|
|
|
017ff1 |
@@ -1208,10 +1224,11 @@ mm_audit_event(ssh_audit_event_t event)
|
|
|
f09e2e |
buffer_free(&m);
|
|
|
f09e2e |
}
|
|
|
f09e2e |
|
|
|
f09e2e |
-void
|
|
|
f09e2e |
+int
|
|
|
f09e2e |
mm_audit_run_command(const char *command)
|
|
|
f09e2e |
{
|
|
|
f09e2e |
Buffer m;
|
|
|
f09e2e |
+ int handle;
|
|
|
f09e2e |
|
|
|
f09e2e |
debug3("%s entering command %s", __func__, command);
|
|
|
f09e2e |
|
|
|
017ff1 |
@@ -1219,6 +1236,26 @@ mm_audit_run_command(const char *command)
|
|
|
f09e2e |
buffer_put_cstring(&m, command);
|
|
|
f09e2e |
|
|
|
f09e2e |
mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_AUDIT_COMMAND, &m);
|
|
|
f09e2e |
+ mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_AUDIT_COMMAND, &m);
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ handle = buffer_get_int(&m);
|
|
|
f09e2e |
+ buffer_free(&m);
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ return (handle);
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+void
|
|
|
f09e2e |
+mm_audit_end_command(int handle, const char *command)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+ Buffer m;
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ debug3("%s entering command %s", __func__, command);
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ buffer_init(&m);
|
|
|
f09e2e |
+ buffer_put_int(&m, handle);
|
|
|
f09e2e |
+ buffer_put_cstring(&m, command);
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_AUDIT_END_COMMAND, &m);
|
|
|
f09e2e |
buffer_free(&m);
|
|
|
f09e2e |
}
|
|
|
f09e2e |
#endif /* SSH_AUDIT_EVENTS */
|
|
|
674526 |
@@ -1354,3 +1391,69 @@ mm_ssh_gssapi_update_creds(ssh_gssapi_ccache *store)
|
|
|
017ff1 |
|
|
|
017ff1 |
#endif /* GSSAPI */
|
|
|
017ff1 |
|
|
|
f09e2e |
+#ifdef SSH_AUDIT_EVENTS
|
|
|
f09e2e |
+void
|
|
|
f09e2e |
+mm_audit_unsupported_body(int what)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+ Buffer m;
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ buffer_init(&m);
|
|
|
f09e2e |
+ buffer_put_int(&m, what);
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_AUDIT_UNSUPPORTED, &m);
|
|
|
f09e2e |
+ mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_AUDIT_UNSUPPORTED,
|
|
|
f09e2e |
+ &m);
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ buffer_free(&m);
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+void
|
|
|
f09e2e |
+mm_audit_kex_body(int ctos, char *cipher, char *mac, char *compress, pid_t pid,
|
|
|
f09e2e |
+ uid_t uid)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+ Buffer m;
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ buffer_init(&m);
|
|
|
f09e2e |
+ buffer_put_int(&m, ctos);
|
|
|
f09e2e |
+ buffer_put_cstring(&m, cipher);
|
|
|
f09e2e |
+ buffer_put_cstring(&m, (mac ? mac : ""));
|
|
|
f09e2e |
+ buffer_put_cstring(&m, compress);
|
|
|
f09e2e |
+ buffer_put_int64(&m, pid);
|
|
|
f09e2e |
+ buffer_put_int64(&m, uid);
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_AUDIT_KEX, &m);
|
|
|
f09e2e |
+ mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_AUDIT_KEX,
|
|
|
f09e2e |
+ &m);
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ buffer_free(&m);
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+void
|
|
|
f09e2e |
+mm_audit_session_key_free_body(int ctos, pid_t pid, uid_t uid)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+ Buffer m;
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ buffer_init(&m);
|
|
|
f09e2e |
+ buffer_put_int(&m, ctos);
|
|
|
f09e2e |
+ buffer_put_int64(&m, pid);
|
|
|
f09e2e |
+ buffer_put_int64(&m, uid);
|
|
|
f09e2e |
+ mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_AUDIT_SESSION_KEY_FREE, &m);
|
|
|
f09e2e |
+ mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_AUDIT_SESSION_KEY_FREE,
|
|
|
f09e2e |
+ &m);
|
|
|
f09e2e |
+ buffer_free(&m);
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+void
|
|
|
f09e2e |
+mm_audit_destroy_sensitive_data(const char *fp, pid_t pid, uid_t uid)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+ Buffer m;
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ buffer_init(&m);
|
|
|
f09e2e |
+ buffer_put_cstring(&m, fp);
|
|
|
f09e2e |
+ buffer_put_int64(&m, pid);
|
|
|
f09e2e |
+ buffer_put_int64(&m, uid);
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_AUDIT_SERVER_KEY_FREE, &m);
|
|
|
f09e2e |
+ buffer_free(&m);
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+#endif /* SSH_AUDIT_EVENTS */
|
|
|
017ff1 |
diff --git a/monitor_wrap.h b/monitor_wrap.h
|
|
|
017ff1 |
index 93929e0..4cf0c78 100644
|
|
|
017ff1 |
--- a/monitor_wrap.h
|
|
|
017ff1 |
+++ b/monitor_wrap.h
|
|
|
017ff1 |
@@ -52,7 +52,8 @@ int mm_key_allowed(enum mm_keytype, char *, char *, Key *);
|
|
|
f09e2e |
int mm_user_key_allowed(struct passwd *, Key *);
|
|
|
f09e2e |
int mm_hostbased_key_allowed(struct passwd *, char *, char *, Key *);
|
|
|
f09e2e |
int mm_auth_rhosts_rsa_key_allowed(struct passwd *, char *, char *, Key *);
|
|
|
f09e2e |
-int mm_key_verify(Key *, u_char *, u_int, u_char *, u_int);
|
|
|
f09e2e |
+int mm_hostbased_key_verify(Key *, u_char *, u_int, u_char *, u_int);
|
|
|
f09e2e |
+int mm_user_key_verify(Key *, u_char *, u_int, u_char *, u_int);
|
|
|
f09e2e |
int mm_auth_rsa_key_allowed(struct passwd *, BIGNUM *, Key **);
|
|
|
f09e2e |
int mm_auth_rsa_verify_response(Key *, BIGNUM *, u_char *);
|
|
|
f09e2e |
BIGNUM *mm_auth_rsa_generate_challenge(Key *);
|
|
|
017ff1 |
@@ -79,7 +80,12 @@ void mm_sshpam_free_ctx(void *);
|
|
|
f09e2e |
#ifdef SSH_AUDIT_EVENTS
|
|
|
f09e2e |
#include "audit.h"
|
|
|
f09e2e |
void mm_audit_event(ssh_audit_event_t);
|
|
|
f09e2e |
-void mm_audit_run_command(const char *);
|
|
|
f09e2e |
+int mm_audit_run_command(const char *);
|
|
|
f09e2e |
+void mm_audit_end_command(int, const char *);
|
|
|
f09e2e |
+void mm_audit_unsupported_body(int);
|
|
|
f09e2e |
+void mm_audit_kex_body(int, char *, char *, char *, pid_t, uid_t);
|
|
|
f09e2e |
+void mm_audit_session_key_free_body(int, pid_t, uid_t);
|
|
|
f09e2e |
+void mm_audit_destroy_sensitive_data(const char *, pid_t, uid_t);
|
|
|
f09e2e |
#endif
|
|
|
f09e2e |
|
|
|
f09e2e |
struct Session;
|
|
|
017ff1 |
diff --git a/packet.c b/packet.c
|
|
|
017ff1 |
index 660a9fc..f5b122b 100644
|
|
|
017ff1 |
--- a/packet.c
|
|
|
017ff1 |
+++ b/packet.c
|
|
|
f09e2e |
@@ -61,6 +61,7 @@
|
|
|
f09e2e |
#include <time.h>
|
|
|
f09e2e |
|
|
|
f09e2e |
#include "xmalloc.h"
|
|
|
f09e2e |
+#include "audit.h"
|
|
|
f09e2e |
#include "buffer.h"
|
|
|
f09e2e |
#include "packet.h"
|
|
|
f09e2e |
#include "crc32.h"
|
|
|
f09e2e |
@@ -476,6 +477,13 @@ packet_get_connection_out(void)
|
|
|
f09e2e |
return active_state->connection_out;
|
|
|
f09e2e |
}
|
|
|
f09e2e |
|
|
|
f09e2e |
+static int
|
|
|
f09e2e |
+packet_state_has_keys (const struct session_state *state)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+ return state != NULL &&
|
|
|
f09e2e |
+ (state->newkeys[MODE_IN] != NULL || state->newkeys[MODE_OUT] != NULL);
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+
|
|
|
f09e2e |
/* Closes the connection and clears and frees internal data structures. */
|
|
|
f09e2e |
|
|
|
f09e2e |
void
|
|
|
f09e2e |
@@ -484,13 +492,6 @@ packet_close(void)
|
|
|
f09e2e |
if (!active_state->initialized)
|
|
|
f09e2e |
return;
|
|
|
f09e2e |
active_state->initialized = 0;
|
|
|
f09e2e |
- if (active_state->connection_in == active_state->connection_out) {
|
|
|
f09e2e |
- shutdown(active_state->connection_out, SHUT_RDWR);
|
|
|
f09e2e |
- close(active_state->connection_out);
|
|
|
f09e2e |
- } else {
|
|
|
f09e2e |
- close(active_state->connection_in);
|
|
|
f09e2e |
- close(active_state->connection_out);
|
|
|
f09e2e |
- }
|
|
|
f09e2e |
buffer_free(&active_state->input);
|
|
|
f09e2e |
buffer_free(&active_state->output);
|
|
|
f09e2e |
buffer_free(&active_state->outgoing_packet);
|
|
|
f09e2e |
@@ -499,8 +500,18 @@ packet_close(void)
|
|
|
f09e2e |
buffer_free(&active_state->compression_buffer);
|
|
|
f09e2e |
buffer_compress_uninit();
|
|
|
f09e2e |
}
|
|
|
f09e2e |
- cipher_cleanup(&active_state->send_context);
|
|
|
f09e2e |
- cipher_cleanup(&active_state->receive_context);
|
|
|
f09e2e |
+ if (packet_state_has_keys(active_state)) {
|
|
|
f09e2e |
+ cipher_cleanup(&active_state->send_context);
|
|
|
f09e2e |
+ cipher_cleanup(&active_state->receive_context);
|
|
|
f09e2e |
+ audit_session_key_free(2);
|
|
|
f09e2e |
+ }
|
|
|
f09e2e |
+ if (active_state->connection_in == active_state->connection_out) {
|
|
|
f09e2e |
+ shutdown(active_state->connection_out, SHUT_RDWR);
|
|
|
f09e2e |
+ close(active_state->connection_out);
|
|
|
f09e2e |
+ } else {
|
|
|
f09e2e |
+ close(active_state->connection_in);
|
|
|
f09e2e |
+ close(active_state->connection_out);
|
|
|
f09e2e |
+ }
|
|
|
f09e2e |
}
|
|
|
f09e2e |
|
|
|
f09e2e |
/* Sets remote side protocol flags. */
|
|
|
017ff1 |
@@ -761,6 +791,7 @@ set_newkeys(int mode)
|
|
|
f09e2e |
}
|
|
|
f09e2e |
if (active_state->newkeys[mode] != NULL) {
|
|
|
f09e2e |
debug("set_newkeys: rekeying");
|
|
|
f09e2e |
+ audit_session_key_free(mode);
|
|
|
f09e2e |
cipher_cleanup(cc);
|
|
|
017ff1 |
enc = &active_state->newkeys[mode]->enc;
|
|
|
017ff1 |
mac = &active_state->newkeys[mode]->mac;
|
|
|
017ff1 |
@@ -2011,6 +2042,47 @@ packet_get_newkeys(int mode)
|
|
|
f09e2e |
return (void *)active_state->newkeys[mode];
|
|
|
f09e2e |
}
|
|
|
f09e2e |
|
|
|
f09e2e |
+static void
|
|
|
f09e2e |
+packet_destroy_state(struct session_state *state)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+ if (state == NULL)
|
|
|
f09e2e |
+ return;
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ cipher_cleanup(&state->receive_context);
|
|
|
f09e2e |
+ cipher_cleanup(&state->send_context);
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ buffer_free(&state->input);
|
|
|
f09e2e |
+ buffer_free(&state->output);
|
|
|
f09e2e |
+ buffer_free(&state->outgoing_packet);
|
|
|
f09e2e |
+ buffer_free(&state->incoming_packet);
|
|
|
f09e2e |
+ buffer_free(&state->compression_buffer);
|
|
|
f09e2e |
+ newkeys_destroy_and_free(state->newkeys[MODE_IN]);
|
|
|
f09e2e |
+ state->newkeys[MODE_IN] = NULL;
|
|
|
f09e2e |
+ newkeys_destroy_and_free(state->newkeys[MODE_OUT]);
|
|
|
f09e2e |
+ state->newkeys[MODE_OUT] = NULL;
|
|
|
f09e2e |
+ mac_destroy(state->packet_discard_mac);
|
|
|
f09e2e |
+// TAILQ_HEAD(, packet) outgoing;
|
|
|
f09e2e |
+// memset(state, 0, sizeof(state));
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+void
|
|
|
f09e2e |
+packet_destroy_all(int audit_it, int privsep)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+ if (audit_it)
|
|
|
f09e2e |
+ audit_it = packet_state_has_keys (active_state) ||
|
|
|
f09e2e |
+ packet_state_has_keys (backup_state);
|
|
|
f09e2e |
+ packet_destroy_state(active_state);
|
|
|
f09e2e |
+ packet_destroy_state(backup_state);
|
|
|
f09e2e |
+ if (audit_it) {
|
|
|
f09e2e |
+#ifdef SSH_AUDIT_EVENTS
|
|
|
f09e2e |
+ if (privsep)
|
|
|
f09e2e |
+ audit_session_key_free(2);
|
|
|
f09e2e |
+ else
|
|
|
f09e2e |
+ audit_session_key_free_body(2, getpid(), getuid());
|
|
|
f09e2e |
+#endif
|
|
|
f09e2e |
+ }
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+
|
|
|
f09e2e |
/*
|
|
|
f09e2e |
* Save the state for the real connection, and use a separate state when
|
|
|
f09e2e |
* resuming a suspended connection.
|
|
|
017ff1 |
@@ -2018,18 +2090,12 @@ packet_get_newkeys(int mode)
|
|
|
f09e2e |
void
|
|
|
f09e2e |
packet_backup_state(void)
|
|
|
f09e2e |
{
|
|
|
f09e2e |
- struct session_state *tmp;
|
|
|
f09e2e |
-
|
|
|
f09e2e |
close(active_state->connection_in);
|
|
|
f09e2e |
active_state->connection_in = -1;
|
|
|
f09e2e |
close(active_state->connection_out);
|
|
|
f09e2e |
active_state->connection_out = -1;
|
|
|
f09e2e |
- if (backup_state)
|
|
|
f09e2e |
- tmp = backup_state;
|
|
|
f09e2e |
- else
|
|
|
f09e2e |
- tmp = alloc_session_state();
|
|
|
f09e2e |
backup_state = active_state;
|
|
|
f09e2e |
- active_state = tmp;
|
|
|
f09e2e |
+ active_state = alloc_session_state();
|
|
|
f09e2e |
}
|
|
|
f09e2e |
|
|
|
f09e2e |
/*
|
|
|
017ff1 |
@@ -2046,9 +2112,7 @@ packet_restore_state(void)
|
|
|
f09e2e |
backup_state = active_state;
|
|
|
f09e2e |
active_state = tmp;
|
|
|
f09e2e |
active_state->connection_in = backup_state->connection_in;
|
|
|
f09e2e |
- backup_state->connection_in = -1;
|
|
|
f09e2e |
active_state->connection_out = backup_state->connection_out;
|
|
|
f09e2e |
- backup_state->connection_out = -1;
|
|
|
f09e2e |
len = buffer_len(&backup_state->input);
|
|
|
f09e2e |
if (len > 0) {
|
|
|
f09e2e |
buf = buffer_ptr(&backup_state->input);
|
|
|
017ff1 |
@@ -2056,4 +2120,10 @@ packet_restore_state(void)
|
|
|
f09e2e |
buffer_clear(&backup_state->input);
|
|
|
f09e2e |
add_recv_bytes(len);
|
|
|
f09e2e |
}
|
|
|
f09e2e |
+ backup_state->connection_in = -1;
|
|
|
f09e2e |
+ backup_state->connection_out = -1;
|
|
|
f09e2e |
+ packet_destroy_state(backup_state);
|
|
|
f09e2e |
+ free(backup_state);
|
|
|
f09e2e |
+ backup_state = NULL;
|
|
|
f09e2e |
}
|
|
|
f09e2e |
+
|
|
|
017ff1 |
diff --git a/packet.h b/packet.h
|
|
|
017ff1 |
index f8edf85..c36c812 100644
|
|
|
017ff1 |
--- a/packet.h
|
|
|
017ff1 |
+++ b/packet.h
|
|
|
f09e2e |
@@ -124,4 +124,5 @@ void packet_restore_state(void);
|
|
|
f09e2e |
void *packet_get_input(void);
|
|
|
f09e2e |
void *packet_get_output(void);
|
|
|
f09e2e |
|
|
|
f09e2e |
+void packet_destroy_all(int, int);
|
|
|
f09e2e |
#endif /* PACKET_H */
|
|
|
017ff1 |
diff --git a/session.c b/session.c
|
|
|
017ff1 |
index df43592..b186ca1 100644
|
|
|
017ff1 |
--- a/session.c
|
|
|
017ff1 |
+++ b/session.c
|
|
|
017ff1 |
@@ -138,7 +138,7 @@ extern int log_stderr;
|
|
|
f09e2e |
extern int debug_flag;
|
|
|
f09e2e |
extern u_int utmp_len;
|
|
|
f09e2e |
extern int startup_pipe;
|
|
|
f09e2e |
-extern void destroy_sensitive_data(void);
|
|
|
f09e2e |
+extern void destroy_sensitive_data(int);
|
|
|
f09e2e |
extern Buffer loginmsg;
|
|
|
f09e2e |
|
|
|
f09e2e |
/* original command from peer. */
|
|
|
017ff1 |
@@ -746,6 +746,14 @@ do_exec_pty(Session *s, const char *command)
|
|
|
f09e2e |
/* Parent. Close the slave side of the pseudo tty. */
|
|
|
f09e2e |
close(ttyfd);
|
|
|
f09e2e |
|
|
|
f09e2e |
+#ifndef HAVE_OSF_SIA
|
|
|
f09e2e |
+ /* do_login in the child did not affect state in this process,
|
|
|
f09e2e |
+ compensate. From an architectural standpoint, this is extremely
|
|
|
f09e2e |
+ ugly. */
|
|
|
f09e2e |
+ if (!(options.use_login && command == NULL))
|
|
|
f09e2e |
+ audit_count_session_open();
|
|
|
f09e2e |
+#endif
|
|
|
f09e2e |
+
|
|
|
f09e2e |
/* Enter interactive session. */
|
|
|
f09e2e |
s->ptymaster = ptymaster;
|
|
|
f09e2e |
packet_set_interactive(1,
|
|
|
017ff1 |
@@ -863,15 +871,19 @@ do_exec(Session *s, const char *command)
|
|
|
017ff1 |
get_remote_port());
|
|
|
f09e2e |
|
|
|
f09e2e |
#ifdef SSH_AUDIT_EVENTS
|
|
|
f09e2e |
+ if (s->command != NULL || s->command_handle != -1)
|
|
|
f09e2e |
+ fatal("do_exec: command already set");
|
|
|
f09e2e |
if (command != NULL)
|
|
|
f09e2e |
- PRIVSEP(audit_run_command(command));
|
|
|
f09e2e |
+ s->command = xstrdup(command);
|
|
|
f09e2e |
else if (s->ttyfd == -1) {
|
|
|
f09e2e |
char *shell = s->pw->pw_shell;
|
|
|
f09e2e |
|
|
|
f09e2e |
if (shell[0] == '\0') /* empty shell means /bin/sh */
|
|
|
f09e2e |
shell =_PATH_BSHELL;
|
|
|
f09e2e |
- PRIVSEP(audit_run_command(shell));
|
|
|
f09e2e |
+ s->command = xstrdup(shell);
|
|
|
f09e2e |
}
|
|
|
674526 |
+ if (s->command != NULL && s->ptyfd == -1)
|
|
|
f09e2e |
+ s->command_handle = PRIVSEP(audit_run_command(s->command));
|
|
|
f09e2e |
#endif
|
|
|
f09e2e |
if (s->ttyfd != -1)
|
|
|
f09e2e |
ret = do_exec_pty(s, command);
|
|
|
017ff1 |
@@ -1708,7 +1720,10 @@ do_child(Session *s, const char *command)
|
|
|
f09e2e |
int r = 0;
|
|
|
f09e2e |
|
|
|
f09e2e |
/* remove hostkey from the child's memory */
|
|
|
f09e2e |
- destroy_sensitive_data();
|
|
|
f09e2e |
+ destroy_sensitive_data(1);
|
|
|
f09e2e |
+ /* Don't audit this - both us and the parent would be talking to the
|
|
|
f09e2e |
+ monitor over a single socket, with no synchronization. */
|
|
|
f09e2e |
+ packet_destroy_all(0, 1);
|
|
|
f09e2e |
|
|
|
f09e2e |
/* Force a password change */
|
|
|
f09e2e |
if (s->authctxt->force_pwchange) {
|
|
|
017ff1 |
@@ -1933,6 +1948,7 @@ session_unused(int id)
|
|
|
f09e2e |
sessions[id].ttyfd = -1;
|
|
|
f09e2e |
sessions[id].ptymaster = -1;
|
|
|
f09e2e |
sessions[id].x11_chanids = NULL;
|
|
|
f09e2e |
+ sessions[id].command_handle = -1;
|
|
|
f09e2e |
sessions[id].next_unused = sessions_first_unused;
|
|
|
f09e2e |
sessions_first_unused = id;
|
|
|
f09e2e |
}
|
|
|
017ff1 |
@@ -2015,6 +2031,19 @@ session_open(Authctxt *authctxt, int chanid)
|
|
|
f09e2e |
}
|
|
|
f09e2e |
|
|
|
f09e2e |
Session *
|
|
|
f09e2e |
+session_by_id(int id)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+ if (id >= 0 && id < sessions_nalloc) {
|
|
|
f09e2e |
+ Session *s = &sessions[id];
|
|
|
f09e2e |
+ if (s->used)
|
|
|
f09e2e |
+ return s;
|
|
|
f09e2e |
+ }
|
|
|
f09e2e |
+ debug("session_by_id: unknown id %d", id);
|
|
|
f09e2e |
+ session_dump();
|
|
|
f09e2e |
+ return NULL;
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+Session *
|
|
|
f09e2e |
session_by_tty(char *tty)
|
|
|
f09e2e |
{
|
|
|
f09e2e |
int i;
|
|
|
674526 |
@@ -2531,6 +2560,32 @@ session_exit_message(Session *s, int status)
|
|
|
f09e2e |
chan_write_failed(c);
|
|
|
f09e2e |
}
|
|
|
f09e2e |
|
|
|
f09e2e |
+#ifdef SSH_AUDIT_EVENTS
|
|
|
f09e2e |
+void
|
|
|
f09e2e |
+session_end_command2(Session *s)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+ if (s->command != NULL) {
|
|
|
674526 |
+ if (s->command_handle != -1)
|
|
|
674526 |
+ audit_end_command(s->command_handle, s->command);
|
|
|
f09e2e |
+ free(s->command);
|
|
|
f09e2e |
+ s->command = NULL;
|
|
|
f09e2e |
+ s->command_handle = -1;
|
|
|
f09e2e |
+ }
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+static void
|
|
|
f09e2e |
+session_end_command(Session *s)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+ if (s->command != NULL) {
|
|
|
674526 |
+ if (s->command_handle != -1)
|
|
|
674526 |
+ PRIVSEP(audit_end_command(s->command_handle, s->command));
|
|
|
f09e2e |
+ free(s->command);
|
|
|
f09e2e |
+ s->command = NULL;
|
|
|
f09e2e |
+ s->command_handle = -1;
|
|
|
f09e2e |
+ }
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+#endif
|
|
|
f09e2e |
+
|
|
|
f09e2e |
void
|
|
|
f09e2e |
session_close(Session *s)
|
|
|
f09e2e |
{
|
|
|
017ff1 |
@@ -2539,6 +2592,10 @@ session_close(Session *s)
|
|
|
f09e2e |
debug("session_close: session %d pid %ld", s->self, (long)s->pid);
|
|
|
f09e2e |
if (s->ttyfd != -1)
|
|
|
f09e2e |
session_pty_cleanup(s);
|
|
|
f09e2e |
+#ifdef SSH_AUDIT_EVENTS
|
|
|
f09e2e |
+ if (s->command)
|
|
|
f09e2e |
+ session_end_command(s);
|
|
|
f09e2e |
+#endif
|
|
|
f09e2e |
free(s->term);
|
|
|
f09e2e |
free(s->display);
|
|
|
f09e2e |
free(s->x11_chanids);
|
|
|
017ff1 |
@@ -2753,6 +2810,15 @@ do_authenticated2(Authctxt *authctxt)
|
|
|
f09e2e |
server_loop2(authctxt);
|
|
|
f09e2e |
}
|
|
|
f09e2e |
|
|
|
f09e2e |
+static void
|
|
|
f09e2e |
+do_cleanup_one_session(Session *s)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+ session_pty_cleanup2(s);
|
|
|
f09e2e |
+#ifdef SSH_AUDIT_EVENTS
|
|
|
f09e2e |
+ session_end_command2(s);
|
|
|
f09e2e |
+#endif
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+
|
|
|
f09e2e |
void
|
|
|
f09e2e |
do_cleanup(Authctxt *authctxt)
|
|
|
f09e2e |
{
|
|
|
017ff1 |
@@ -2801,5 +2867,5 @@ do_cleanup(Authctxt *authctxt)
|
|
|
f09e2e |
* or if running in monitor.
|
|
|
f09e2e |
*/
|
|
|
f09e2e |
if (!use_privsep || mm_is_monitor())
|
|
|
f09e2e |
- session_destroy_all(session_pty_cleanup2);
|
|
|
f09e2e |
+ session_destroy_all(do_cleanup_one_session);
|
|
|
f09e2e |
}
|
|
|
017ff1 |
diff --git a/session.h b/session.h
|
|
|
017ff1 |
index 6a2f35e..e9b312e 100644
|
|
|
017ff1 |
--- a/session.h
|
|
|
017ff1 |
+++ b/session.h
|
|
|
017ff1 |
@@ -61,6 +61,12 @@ struct Session {
|
|
|
f09e2e |
char *name;
|
|
|
f09e2e |
char *val;
|
|
|
f09e2e |
} *env;
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ /* exec */
|
|
|
f09e2e |
+#ifdef SSH_AUDIT_EVENTS
|
|
|
f09e2e |
+ int command_handle;
|
|
|
f09e2e |
+ char *command;
|
|
|
f09e2e |
+#endif
|
|
|
f09e2e |
};
|
|
|
f09e2e |
|
|
|
f09e2e |
void do_authenticated(Authctxt *);
|
|
|
017ff1 |
@@ -73,8 +79,10 @@ void session_close_by_pid(pid_t, int);
|
|
|
f09e2e |
void session_close_by_channel(int, void *);
|
|
|
f09e2e |
void session_destroy_all(void (*)(Session *));
|
|
|
f09e2e |
void session_pty_cleanup2(Session *);
|
|
|
f09e2e |
+void session_end_command2(Session *);
|
|
|
f09e2e |
|
|
|
f09e2e |
Session *session_new(void);
|
|
|
f09e2e |
+Session *session_by_id(int);
|
|
|
f09e2e |
Session *session_by_tty(char *);
|
|
|
f09e2e |
void session_close(Session *);
|
|
|
f09e2e |
void do_setusercontext(struct passwd *);
|
|
|
017ff1 |
diff --git a/sshd.c b/sshd.c
|
|
|
017ff1 |
index 8a0740a..2813aa2 100644
|
|
|
017ff1 |
--- a/sshd.c
|
|
|
017ff1 |
+++ b/sshd.c
|
|
|
f09e2e |
@@ -119,6 +119,7 @@
|
|
|
f09e2e |
#endif
|
|
|
f09e2e |
#include "monitor_wrap.h"
|
|
|
f09e2e |
#include "roaming.h"
|
|
|
f09e2e |
+#include "audit.h"
|
|
|
f09e2e |
#include "ssh-sandbox.h"
|
|
|
f09e2e |
#include "version.h"
|
|
|
f09e2e |
|
|
|
017ff1 |
@@ -264,7 +265,7 @@ Buffer loginmsg;
|
|
|
f09e2e |
struct passwd *privsep_pw = NULL;
|
|
|
f09e2e |
|
|
|
f09e2e |
/* Prototypes for various functions defined later in this file. */
|
|
|
f09e2e |
-void destroy_sensitive_data(void);
|
|
|
f09e2e |
+void destroy_sensitive_data(int);
|
|
|
f09e2e |
void demote_sensitive_data(void);
|
|
|
f09e2e |
|
|
|
f09e2e |
static void do_ssh1_kex(void);
|
|
|
017ff1 |
@@ -283,6 +284,15 @@ close_listen_socks(void)
|
|
|
f09e2e |
num_listen_socks = -1;
|
|
|
f09e2e |
}
|
|
|
f09e2e |
|
|
|
f09e2e |
+/*
|
|
|
f09e2e |
+ * Is this process listening for clients (i.e. not specific to any specific
|
|
|
f09e2e |
+ * client connection?)
|
|
|
f09e2e |
+ */
|
|
|
f09e2e |
+int listening_for_clients(void)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+ return num_listen_socks > 0;
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+
|
|
|
f09e2e |
static void
|
|
|
f09e2e |
close_startup_pipes(void)
|
|
|
f09e2e |
{
|
|
|
017ff1 |
@@ -562,22 +572,45 @@ sshd_exchange_identification(int sock_in, int sock_out)
|
|
|
f09e2e |
}
|
|
|
f09e2e |
}
|
|
|
f09e2e |
|
|
|
f09e2e |
-/* Destroy the host and server keys. They will no longer be needed. */
|
|
|
f09e2e |
+/*
|
|
|
f09e2e |
+ * Destroy the host and server keys. They will no longer be needed. Careful,
|
|
|
f09e2e |
+ * this can be called from cleanup_exit() - i.e. from just about anywhere.
|
|
|
f09e2e |
+ */
|
|
|
f09e2e |
void
|
|
|
f09e2e |
-destroy_sensitive_data(void)
|
|
|
f09e2e |
+destroy_sensitive_data(int privsep)
|
|
|
f09e2e |
{
|
|
|
f09e2e |
int i;
|
|
|
f09e2e |
+ pid_t pid;
|
|
|
f09e2e |
+ uid_t uid;
|
|
|
f09e2e |
|
|
|
f09e2e |
if (sensitive_data.server_key) {
|
|
|
f09e2e |
key_free(sensitive_data.server_key);
|
|
|
f09e2e |
sensitive_data.server_key = NULL;
|
|
|
f09e2e |
}
|
|
|
f09e2e |
+ pid = getpid();
|
|
|
f09e2e |
+ uid = getuid();
|
|
|
f09e2e |
for (i = 0; i < options.num_host_key_files; i++) {
|
|
|
f09e2e |
if (sensitive_data.host_keys[i]) {
|
|
|
f09e2e |
+ char *fp;
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ if (key_is_private(sensitive_data.host_keys[i]))
|
|
|
017ff1 |
+ fp = key_selected_fingerprint(sensitive_data.host_keys[i], SSH_FP_HEX);
|
|
|
f09e2e |
+ else
|
|
|
f09e2e |
+ fp = NULL;
|
|
|
f09e2e |
key_free(sensitive_data.host_keys[i]);
|
|
|
f09e2e |
sensitive_data.host_keys[i] = NULL;
|
|
|
f09e2e |
+ if (fp != NULL) {
|
|
|
f09e2e |
+ if (privsep)
|
|
|
f09e2e |
+ PRIVSEP(audit_destroy_sensitive_data(fp,
|
|
|
f09e2e |
+ pid, uid));
|
|
|
f09e2e |
+ else
|
|
|
f09e2e |
+ audit_destroy_sensitive_data(fp,
|
|
|
f09e2e |
+ pid, uid);
|
|
|
f09e2e |
+ free(fp);
|
|
|
f09e2e |
+ }
|
|
|
f09e2e |
}
|
|
|
f09e2e |
- if (sensitive_data.host_certificates[i]) {
|
|
|
f09e2e |
+ if (sensitive_data.host_certificates
|
|
|
f09e2e |
+ && sensitive_data.host_certificates[i]) {
|
|
|
f09e2e |
key_free(sensitive_data.host_certificates[i]);
|
|
|
f09e2e |
sensitive_data.host_certificates[i] = NULL;
|
|
|
f09e2e |
}
|
|
|
017ff1 |
@@ -591,6 +624,8 @@ void
|
|
|
f09e2e |
demote_sensitive_data(void)
|
|
|
f09e2e |
{
|
|
|
f09e2e |
Key *tmp;
|
|
|
f09e2e |
+ pid_t pid;
|
|
|
f09e2e |
+ uid_t uid;
|
|
|
f09e2e |
int i;
|
|
|
f09e2e |
|
|
|
f09e2e |
if (sensitive_data.server_key) {
|
|
|
017ff1 |
@@ -599,13 +634,25 @@ demote_sensitive_data(void)
|
|
|
f09e2e |
sensitive_data.server_key = tmp;
|
|
|
f09e2e |
}
|
|
|
f09e2e |
|
|
|
f09e2e |
+ pid = getpid();
|
|
|
f09e2e |
+ uid = getuid();
|
|
|
f09e2e |
for (i = 0; i < options.num_host_key_files; i++) {
|
|
|
f09e2e |
if (sensitive_data.host_keys[i]) {
|
|
|
f09e2e |
+ char *fp;
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ if (key_is_private(sensitive_data.host_keys[i]))
|
|
|
017ff1 |
+ fp = key_selected_fingerprint(sensitive_data.host_keys[i], SSH_FP_HEX);
|
|
|
f09e2e |
+ else
|
|
|
f09e2e |
+ fp = NULL;
|
|
|
f09e2e |
tmp = key_demote(sensitive_data.host_keys[i]);
|
|
|
f09e2e |
key_free(sensitive_data.host_keys[i]);
|
|
|
f09e2e |
sensitive_data.host_keys[i] = tmp;
|
|
|
f09e2e |
if (tmp->type == KEY_RSA1)
|
|
|
f09e2e |
sensitive_data.ssh1_host_key = tmp;
|
|
|
f09e2e |
+ if (fp != NULL) {
|
|
|
f09e2e |
+ audit_destroy_sensitive_data(fp, pid, uid);
|
|
|
f09e2e |
+ free(fp);
|
|
|
f09e2e |
+ }
|
|
|
f09e2e |
}
|
|
|
f09e2e |
/* Certs do not need demotion */
|
|
|
f09e2e |
}
|
|
|
017ff1 |
@@ -675,7 +722,7 @@ privsep_preauth(Authctxt *authctxt)
|
|
|
770374 |
|
|
|
770374 |
if (use_privsep == PRIVSEP_ON)
|
|
|
017ff1 |
box = ssh_sandbox_init(pmonitor);
|
|
|
770374 |
- pid = fork();
|
|
|
770374 |
+ pmonitor->m_pid = pid = fork();
|
|
|
770374 |
if (pid == -1) {
|
|
|
770374 |
fatal("fork of unprivileged child failed");
|
|
|
770374 |
} else if (pid != 0) {
|
|
|
017ff1 |
@@ -729,6 +776,8 @@ privsep_preauth(Authctxt *authctxt)
|
|
|
f09e2e |
}
|
|
|
f09e2e |
}
|
|
|
f09e2e |
|
|
|
f09e2e |
+extern Newkeys *current_keys[];
|
|
|
f09e2e |
+
|
|
|
f09e2e |
static void
|
|
|
f09e2e |
privsep_postauth(Authctxt *authctxt)
|
|
|
f09e2e |
{
|
|
|
017ff1 |
@@ -753,6 +802,10 @@ privsep_postauth(Authctxt *authctxt)
|
|
|
f09e2e |
else if (pmonitor->m_pid != 0) {
|
|
|
f09e2e |
verbose("User child is on pid %ld", (long)pmonitor->m_pid);
|
|
|
f09e2e |
buffer_clear(&loginmsg);
|
|
|
674526 |
+ newkeys_destroy(current_keys[MODE_OUT]);
|
|
|
f09e2e |
+ newkeys_destroy(current_keys[MODE_IN]);
|
|
|
f09e2e |
+ audit_session_key_free_body(2, getpid(), getuid());
|
|
|
f09e2e |
+ packet_destroy_all(0, 0);
|
|
|
f09e2e |
monitor_child_postauth(pmonitor);
|
|
|
f09e2e |
|
|
|
f09e2e |
/* NEVERREACHED */
|
|
|
017ff1 |
@@ -1211,6 +1264,7 @@ server_accept_loop(int *sock_in, int *sock_out, int *newsock, int *config_s)
|
|
|
f09e2e |
if (received_sigterm) {
|
|
|
f09e2e |
logit("Received signal %d; terminating.",
|
|
|
f09e2e |
(int) received_sigterm);
|
|
|
f09e2e |
+ destroy_sensitive_data(0);
|
|
|
f09e2e |
close_listen_socks();
|
|
|
f09e2e |
unlink(options.pid_file);
|
|
|
f09e2e |
exit(received_sigterm == SIGTERM ? 0 : 255);
|
|
|
017ff1 |
@@ -2134,6 +2188,7 @@ main(int ac, char **av)
|
|
|
f09e2e |
*/
|
|
|
f09e2e |
if (use_privsep) {
|
|
|
f09e2e |
mm_send_keystate(pmonitor);
|
|
|
f09e2e |
+ packet_destroy_all(1, 1);
|
|
|
f09e2e |
exit(0);
|
|
|
f09e2e |
}
|
|
|
f09e2e |
|
|
|
017ff1 |
@@ -2179,7 +2234,7 @@ main(int ac, char **av)
|
|
|
f09e2e |
privsep_postauth(authctxt);
|
|
|
f09e2e |
/* the monitor process [priv] will not return */
|
|
|
f09e2e |
if (!compat20)
|
|
|
f09e2e |
- destroy_sensitive_data();
|
|
|
f09e2e |
+ destroy_sensitive_data(0);
|
|
|
f09e2e |
}
|
|
|
f09e2e |
|
|
|
f09e2e |
packet_set_timeout(options.client_alive_interval,
|
|
|
017ff1 |
@@ -2189,6 +2244,9 @@ main(int ac, char **av)
|
|
|
f09e2e |
do_authenticated(authctxt);
|
|
|
f09e2e |
|
|
|
f09e2e |
/* The connection has been terminated. */
|
|
|
f09e2e |
+ packet_destroy_all(1, 1);
|
|
|
f09e2e |
+ destroy_sensitive_data(1);
|
|
|
f09e2e |
+
|
|
|
f09e2e |
packet_get_state(MODE_IN, NULL, NULL, NULL, &ibytes);
|
|
|
f09e2e |
packet_get_state(MODE_OUT, NULL, NULL, NULL, &obytes);
|
|
|
f09e2e |
verbose("Transferred: sent %llu, received %llu bytes",
|
|
|
017ff1 |
@@ -2346,6 +2404,10 @@ do_ssh1_kex(void)
|
|
|
f09e2e |
if (cookie[i] != packet_get_char())
|
|
|
f09e2e |
packet_disconnect("IP Spoofing check bytes do not match.");
|
|
|
f09e2e |
|
|
|
f09e2e |
+#ifdef SSH_AUDIT_EVENTS
|
|
|
f09e2e |
+ audit_kex(2, cipher_name(cipher_type), "crc", "none");
|
|
|
f09e2e |
+#endif
|
|
|
f09e2e |
+
|
|
|
f09e2e |
debug("Encryption type: %.200s", cipher_name(cipher_type));
|
|
|
f09e2e |
|
|
|
f09e2e |
/* Get the encrypted integer. */
|
|
|
017ff1 |
@@ -2418,7 +2480,7 @@ do_ssh1_kex(void)
|
|
|
f09e2e |
session_id[i] = session_key[i] ^ session_key[i + 16];
|
|
|
f09e2e |
}
|
|
|
f09e2e |
/* Destroy the private and public keys. No longer. */
|
|
|
f09e2e |
- destroy_sensitive_data();
|
|
|
f09e2e |
+ destroy_sensitive_data(0);
|
|
|
f09e2e |
|
|
|
f09e2e |
if (use_privsep)
|
|
|
f09e2e |
mm_ssh1_session_id(session_id);
|
|
|
017ff1 |
@@ -2584,6 +2646,16 @@ do_ssh2_kex(void)
|
|
|
f09e2e |
void
|
|
|
f09e2e |
cleanup_exit(int i)
|
|
|
f09e2e |
{
|
|
|
f09e2e |
+ static int in_cleanup = 0;
|
|
|
f09e2e |
+ int is_privsep_child;
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ /* cleanup_exit can be called at the very least from the privsep
|
|
|
f09e2e |
+ wrappers used for auditing. Make sure we don't recurse
|
|
|
f09e2e |
+ indefinitely. */
|
|
|
f09e2e |
+ if (in_cleanup)
|
|
|
f09e2e |
+ _exit(i);
|
|
|
f09e2e |
+ in_cleanup = 1;
|
|
|
f09e2e |
+
|
|
|
f09e2e |
if (the_authctxt) {
|
|
|
f09e2e |
do_cleanup(the_authctxt);
|
|
|
f09e2e |
if (use_privsep && privsep_is_preauth && pmonitor->m_pid > 1) {
|
|
|
017ff1 |
@@ -2594,9 +2666,14 @@ cleanup_exit(int i)
|
|
|
f09e2e |
pmonitor->m_pid, strerror(errno));
|
|
|
f09e2e |
}
|
|
|
f09e2e |
}
|
|
|
770374 |
+ is_privsep_child = use_privsep && pmonitor != NULL && pmonitor->m_pid == 0;
|
|
|
f09e2e |
+ if (sensitive_data.host_keys != NULL)
|
|
|
f09e2e |
+ destroy_sensitive_data(is_privsep_child);
|
|
|
f09e2e |
+ packet_destroy_all(1, is_privsep_child);
|
|
|
f09e2e |
#ifdef SSH_AUDIT_EVENTS
|
|
|
f09e2e |
/* done after do_cleanup so it can cancel the PAM auth 'thread' */
|
|
|
f09e2e |
- if (!use_privsep || mm_is_monitor())
|
|
|
f09e2e |
+ if ((the_authctxt == NULL || !the_authctxt->authenticated) &&
|
|
|
f09e2e |
+ (!use_privsep || mm_is_monitor()))
|
|
|
f09e2e |
audit_event(SSH_CONNECTION_ABANDON);
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f09e2e |
#endif
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f09e2e |
_exit(i);
|