DescriptionThe decode_uncompressed function in libavcodec/faxcompr.c in FFmpeg before 2.8.2 does not validate uncompressed runs, which allows remote attackers to cause a denial of service (out-of-bounds array access) or possibly have unspecified other impact via crafted CCITT FAX data.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
ffmpeg (PTS)buster7:4.1.9-0+deb10u1fixed
buster (security)7:4.1.10-0+deb10u1fixed
bullseye (security), bullseye7:4.3.5-0+deb11u1fixed
bookworm, sid7:5.1.2-3fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
ffmpegsourcesqueeze(not affected)
libavsource(unstable)(not affected)


[squeeze] - ffmpeg <not-affected> (Vulnerable code not present)
- libav <not-affected> (Vulnerable feature not present);a=commit;h=d4a731b84a08f0f3839eaaaf82e97d8d9c67da46
Vulnerability affects G3{1, 2}D code extensions feature, which is not present
in libav 0.8 and 9. branches:
11.x features G3 support, but the vulnerable code was introduced later

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