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From f13ebca839e55d0c7ea1c7f57ae667c47fe9c0d5 Mon Sep 17 00:00:00 2001
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From: Kevin Backhouse <kevinbackhouse@github.com>
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Date: Mon, 5 Jul 2021 10:39:08 +0100
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Subject: [PATCH 1/2] Regression test for
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https://github.com/Exiv2/exiv2/security/advisories/GHSA-583f-w9pm-99r2
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---
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test/data/issue_ghsa_583f_w9pm_99r2_poc.jp2 | Bin 0 -> 32768 bytes
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.../github/test_issue_ghsa_583f_w9pm_99r2.py | 18 ++++++++++++++++++
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2 files changed, 18 insertions(+)
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create mode 100644 test/data/issue_ghsa_583f_w9pm_99r2_poc.jp2
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create mode 100644 tests/bugfixes/github/test_issue_ghsa_583f_w9pm_99r2.py
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diff --git a/tests/bugfixes/github/test_issue_ghsa_583f_w9pm_99r2.py b/tests/bugfixes/github/test_issue_ghsa_583f_w9pm_99r2.py
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new file mode 100644
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index 000000000..808916aee
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--- /dev/null
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+++ b/tests/bugfixes/github/test_issue_ghsa_583f_w9pm_99r2.py
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@@ -0,0 +1,18 @@
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+# -*- coding: utf-8 -*-
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+
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+from system_tests import CaseMeta, path, check_no_ASAN_UBSAN_errors
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+
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+class Jp2ImagePrintStructureICC(metaclass=CaseMeta):
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+ """
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+ Regression test for the bug described in:
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+ https://github.com/Exiv2/exiv2/security/advisories/GHSA-583f-w9pm-99r2
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+ """
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+ url = "https://github.com/Exiv2/exiv2/security/advisories/GHSA-583f-w9pm-99r2"
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+
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+ filename = path("$data_path/issue_ghsa_583f_w9pm_99r2_poc.jp2")
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+ commands = ["$exiv2 -p C $filename"]
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+ stdout = [""]
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+ stderr = ["""Exiv2 exception in print action for file $filename:
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+$kerCorruptedMetadata
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+"""]
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+ retval = [1]
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From dbf472751fc8b87ea7d1de02f54eaf64233a2fb6 Mon Sep 17 00:00:00 2001
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From: Kevin Backhouse <kevinbackhouse@github.com>
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Date: Mon, 5 Jul 2021 10:40:03 +0100
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Subject: [PATCH 2/2] Better bounds checking in Jp2Image::printStructure
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---
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src/jp2image.cpp | 2 ++
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1 file changed, 2 insertions(+)
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diff --git a/src/jp2image.cpp b/src/jp2image.cpp
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index 3bf356629..2d6dc2118 100644
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--- a/src/jp2image.cpp
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+++ b/src/jp2image.cpp
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@@ -538,6 +538,7 @@ static void boxes_check(size_t b,size_t m)
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if (subBox.type == kJp2BoxTypeColorHeader) {
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long pad = 3; // don't know why there are 3 padding bytes
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+ enforce(data.size_ >= pad, kerCorruptedMetadata);
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if (bPrint) {
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out << " | pad:";
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for (int i = 0; i < 3; i++)
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@@ -547,6 +548,7 @@ static void boxes_check(size_t b,size_t m)
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if (bPrint) {
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out << " | iccLength:" << iccLength;
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}
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+ enforce(iccLength <= data.size_ - pad, kerCorruptedMetadata);
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if (bICC) {
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out.write((const char*)data.pData_ + pad, iccLength);
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}
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