CVE-2017-1000460

Name	CVE-2017-1000460
Description	In line libavcodec/h264dec.c:500 in libav(v13_dev0), ffmpeg(n3.4), chromium(56 prior Feb 13, 2017), the return value of init_get_bits is ignored and get_ue_golomb(&gb) is called on an uninitialized get_bits context, which causes a NULL deref exception.
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)
NVD severity	medium (attack range: remote)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
ffmpeg (PTS)	stretch (security), stretch	7:3.2.12-1~deb9u1	fixed
	buster	7:4.1-1	fixed
	sid	7:4.1.1-1	fixed
libav (PTS)	jessie	6:11.12-1~deb8u1	vulnerable
	jessie (security)	6:11.12-1~deb8u5	vulnerable

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
ffmpeg	source	(unstable)	7:3.1.1-1	medium
libav	source	(unstable)	(unfixed)	medium

https://bugzilla.libav.org/show_bug.cgi?id=952
https://lists.ffmpeg.org/pipermail/ffmpeg-cvslog/2017-January/104221.html