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44 lines
1.7 KiB
Diff
44 lines
1.7 KiB
Diff
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From 0b5e73c4321de0ba1d495fdc0967054b2a77931c Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= <berrange@redhat.com>
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Date: Mon, 10 Jul 2023 13:36:10 +0100
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Subject: [PATCH 5/8] Fix for CVE-2017-16516
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Description: Fix for CVE-2017-16516
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Potential buffer overread: A JSON file can cause denial of service.
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Origin: https://github.com/brianmario/yajl-ruby/commit/a8ca8f476655adaa187eedc60bdc770fff3c51ce
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Bug-Debian: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1040036
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Bug: https://github.com/lloyd/yajl/issues/248
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Patch taken from Debian package source
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NB, Fedora code can't trigger the reported aborts since it passes the
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-DNDEBUG flag, but pulling the fix for robustness in case a future
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change enables the assert()s.
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Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
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---
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src/yajl_encode.c | 4 ++--
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1 file changed, 2 insertions(+), 2 deletions(-)
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diff --git a/src/yajl_encode.c b/src/yajl_encode.c
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index fd08258..0d97cc5 100644
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--- a/src/yajl_encode.c
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+++ b/src/yajl_encode.c
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@@ -139,8 +139,8 @@ void yajl_string_decode(yajl_buf buf, const unsigned char * str,
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end+=3;
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/* check if this is a surrogate */
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if ((codepoint & 0xFC00) == 0xD800) {
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- end++;
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- if (str[end] == '\\' && str[end + 1] == 'u') {
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+ if (end + 2 < len && str[end + 1] == '\\' && str[end + 2] == 'u') {
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+ end++;
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unsigned int surrogate = 0;
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hexToDigit(&surrogate, str + end + 2);
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codepoint =
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--
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2.41.0
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