CVE-2018-19134

Name	CVE-2018-19134
Description	In Artifex Ghostscript through 9.25, the setpattern operator did not properly validate certain types. A specially crafted PostScript document could exploit this to crash Ghostscript or, possibly, execute arbitrary code in the context of the Ghostscript process. This is a type confusion issue because of failure to check whether the Implementation of a pattern dictionary was a structure type.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
References	DLA-1620-1, DSA-4346-1
NVD severity	medium (attack range: remote)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
ghostscript (PTS)	jessie	9.06~dfsg-2+deb8u7	vulnerable
	jessie (security)	9.26a~dfsg-0+deb8u1	fixed
	stretch	9.20~dfsg-3.2+deb9u5	vulnerable
	stretch (security)	9.26a~dfsg-0+deb9u1	fixed
	buster, sid	9.26a~dfsg-2	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin
ghostscript	source	(unstable)	9.26~dfsg-1	medium
ghostscript	source	jessie	9.06~dfsg-2+deb8u13	medium	DLA-1620-1
ghostscript	source	stretch	9.26~dfsg-0+deb9u1	medium	DSA-4346-1

Notes

https://bugs.ghostscript.com/show_bug.cgi?id=700141
http://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=693baf02152119af6e6afd30bb8ec76d14f84bbf (master)
http://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=7c8f85a23db24031945af3cacb2c0b4740e67072 (ghostscript-9.26)