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LibTLS: Don't attempt to read past EOF when parsing TBSCertificate

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This allows the decoder to fail gracefully when reading a partial or
malformed TBSCertificate. We also now ensure that the certificate data
is valid before making a copy of it.
This commit is contained in:
Tim Ledbetter 2023-10-05 17:51:29 +01:00 • committed by Andreas Kling
parent 65b50ecc1a
commit e6d9bb0774
4 changed files with 21 additions and 2 deletions
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1
Tests/LibTLS/CMakeLists.txt
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@ -1,4 +1,5 @@
set(TEST_SOURCES
TestTLSCertificateParser.cpp
TestTLSHandshake.cpp
)

15
Tests/LibTLS/TestTLSCertificateParser.cpp Normal file
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@ -0,0 +1,15 @@
/*
* Copyright (c) 2023, Tim Ledbetter <timledbetter@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibTLS/Certificate.h>
#include <LibTest/TestCase.h>
TEST_CASE(certificate_with_malformed_tbscertificate_should_fail_gracefully)
{
Array<u8, 4> invalid_certificate_data { 0xB0, 0x02, 0x70, 0x00 };
auto parse_result = TLS::Certificate::parse_certificate(invalid_certificate_data);
EXPECT(parse_result.is_error());
}