CVE-2019-6977

Name	CVE-2019-6977
Description	gdImageColorMatch in gd_color_match.c in the GD Graphics Library (aka LibGD) 2.2.5, as used in the imagecolormatch function in PHP before 5.6.40, 7.x before 7.1.26, 7.2.x before 7.2.14, and 7.3.x before 7.3.1, has a heap-based buffer overflow. This can be exploited by an attacker who is able to trigger imagecolormatch calls with crafted image data.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-1651-1, DLA-1679-1, DSA-4384-1
Debian Bugs	920645

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
libgd2 (PTS)	bullseye	2.3.0-2	fixed
	bookworm	2.3.3-9	fixed
	sid, trixie	2.3.3-12	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
libgd2	source	jessie	2.1.0-5+deb8u12		DLA-1651-1
libgd2	source	stretch	2.2.4-2+deb9u4		DSA-4384-1
libgd2	source	(unstable)	2.2.5-5.1			920645
php5	source	jessie	5.6.40+dfsg-0+deb8u1		DLA-1679-1
php5	source	(unstable)	(unfixed)	unimportant
php7.0	source	(unstable)	(unfixed)	unimportant
php7.3	source	(unstable)	7.3.1-1	unimportant

Notes

Fixed in 5.6.40, 7.1.26, 7.2.14, 7.3.1
PHP Bug: https://bugs.php.net/bug.php?id=77270
https://github.com/php/php-src/commit/7a12dad4dd6c370835b13afae214b240082c7538