CVE-2016-8670

Name	CVE-2016-8670
Description	Integer signedness error in the dynamicGetbuf function in gd_io_dp.c in the GD Graphics Library (aka libgd) through 2.2.3, as used in PHP before 5.6.28 and 7.x before 7.0.13, allows remote attackers to cause a denial of service (stack-based buffer overflow) or possibly have unspecified other impact via a crafted imagecreatefromstring call.
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-665-1, DSA-3693-1
Debian Bugs	840805

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
	trixie, sid	2.3.3-12	fixed

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

Package	Type	Release	Fixed Version	Origin	Debian Bugs
libgd2	source	wheezy	2.0.36~rc1~dfsg-6.1+deb7u6	DLA-665-1
libgd2	source	jessie	2.1.0-5+deb8u7	DSA-3693-1
libgd2	source	(unstable)	2.2.3-87-gd0fec80-1		840805

Notes

PHP Bug: https://bugs.php.net/bug.php?id=73280
https://github.com/libgd/libgd/commit/53110871935244816bbb9d131da0bccff734bfe9
https://www.openwall.com/lists/oss-security/2016/10/15/1