CVE-2017-14169

Name	CVE-2017-14169
Description	In the mxf_read_primer_pack function in libavformat/mxfdec.c in FFmpeg 3.3.3, an integer signedness error might occur when a crafted file, which claims a large "item_num" field such as 0xffffffff, is provided. As a result, the variable "item_num" turns negative, bypassing the check for a large value.
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	DSA-3996-1
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, sid	7:4.1-1	fixed
libav (PTS)	jessie	6:11.12-1~deb8u1	vulnerable
	jessie (security)	6:11.12-1~deb8u4	vulnerable

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

Package	Type	Release	Fixed Version	Urgency	Origin
ffmpeg	source	(unstable)	7:3.3.4-1	low
ffmpeg	source	stretch	7:3.2.8-1~deb9u1	medium	DSA-3996-1
libav	source	(unstable)	(unfixed)	medium

Notes

libav in Jessie uses a different guard for item_num. Check whether
the guard is necessary at all.
https://github.com/FFmpeg/FFmpeg/commit/9d00fb9d70ee8c0cc7002b89318c5be00f1bbdad