CVE-2016-7976

Name	CVE-2016-7976
Description	The PS Interpreter in Ghostscript 9.18 and 9.20 allows remote attackers to execute arbitrary code via crafted userparams.
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-674-1, DSA-3691-1
Debian Bugs	839260

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
ghostscript (PTS)	jessie, jessie (lts)	9.26a~dfsg-0+deb8u12	fixed
	stretch (security)	9.26a~dfsg-0+deb9u9	fixed
	stretch (lts), stretch	9.26a~dfsg-0+deb9u12	fixed
	buster (security), buster, buster (lts)	9.27~dfsg-2+deb10u9	fixed
	bullseye	9.53.3~dfsg-7+deb11u7	fixed
	bullseye (security)	9.53.3~dfsg-7+deb11u8	fixed
	bookworm	10.0.0~dfsg-11+deb12u5	fixed
	bookworm (security)	10.0.0~dfsg-11+deb12u6	fixed
	sid, trixie	10.04.0~dfsg-1	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
ghostscript	source	wheezy	9.05~dfsg-6.3+deb7u3		DLA-674-1
ghostscript	source	jessie	9.06~dfsg-2+deb8u3		DSA-3691-1
ghostscript	source	(unstable)	9.19~dfsg-3.1	high		839260

Notes

Upstream bug: http://bugs.ghostscript.com/show_bug.cgi?id=697178
Reproducer: https://www.openwall.com/lists/oss-security/2016/09/30/8
Patch: https://git.ghostscript.com/?p=ghostpdl.git;h=6d444c273da5499a4cd72f21cb6d4c9a5256807d
https://www.openwall.com/lists/oss-security/2016/10/05/7