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From 335f2a35433a949fc30101655a40940bc6ecec12 Mon Sep 17 00:00:00 2001
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From: Thierry Bordaz <tbordaz@redhat.com>
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Date: Wed, 15 May 2019 17:46:14 +0200
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Subject: [PATCH] Ticket 50329 - (2nd) Possible Security Issue: DOS due to
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ioblocktimeout not applying to TLS
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Bug Description:
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A secure socket is configured in blocking mode. If an event
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is detected on a secure socket a worker tries to receive the request.
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If handshake occurs during the read, it can hang longer than
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ioblocktimeout because it takes into account the socket option
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rather than the timeout used for the ssl_Recv
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Fix Description:
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The fix is specific to secure socket and set this socket option
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to do non blocking IO.
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https://pagure.io/389-ds-base/issue/50329
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Reviewed by: ?
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Platforms tested: F28, RHEL7.6
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Flag Day: no
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Doc impact: no
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---
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ldap/servers/slapd/daemon.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/ldap/servers/slapd/daemon.c b/ldap/servers/slapd/daemon.c
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index 4841a8a5c..afe0fb737 100644
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--- a/ldap/servers/slapd/daemon.c
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+++ b/ldap/servers/slapd/daemon.c
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@@ -3193,7 +3193,7 @@ configure_pr_socket(PRFileDesc **pr_socket, int secure, int local)
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if (secure) {
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pr_socketoption.option = PR_SockOpt_Nonblocking;
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- pr_socketoption.value.non_blocking = 0;
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+ pr_socketoption.value.non_blocking = 1;
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if (PR_SetSocketOption(*pr_socket, &pr_socketoption) == PR_FAILURE) {
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PRErrorCode prerr = PR_GetError();
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slapi_log_err(SLAPI_LOG_ERR,
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--
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2.21.0
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