Input validation error in FFmpeg - CVE-2011-4031

Vulnerability identifier: #VU44101

CSH Severity: High

CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2011-4031

CWE-ID: CWE-20

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

Integer underflow in the asfrtp_parse_packet function in libavformat/rtpdec_asf.c in FFmpeg before 0.8.3 allows remote attackers to execute arbitrary code via a crafted ASF packet.

FFmpeg
Ubuntu
libavcodec52 (Ubuntu package)
libavformat52 (Ubuntu package)
libavcodec53 (Ubuntu package)
libavformat53 (Ubuntu package)

Install update from vendor's website.

libavcodec52 (Ubuntu package) - update to 4:0.6.6-0ubuntu0.11.04.1
libavformat52 (Ubuntu package) - update to 4:0.6.6-0ubuntu0.11.04.1
libavcodec53 (Ubuntu package) - addressed in versions 4:0.7.6-0ubuntu0.11.10.1, 4:0.8.3-0ubuntu0.12.04.1
libavformat53 (Ubuntu package) - addressed in versions 4:0.7.6-0ubuntu0.11.10.1, 4:0.8.3-0ubuntu0.12.04.1

• http://git.videolan.org/?p=ffmpeg.git;a=commit;h=c2a2ad133eb9d42361804a568dee336992349a5e
• http://git.videolan.org/?p=ffmpeg.git;a=shortlog;h=n0.8.3
• http://technet.microsoft.com/en-us/security/msvr/msvr11-012

• Input validation error in ffmpeg.sourceforge.net FFmpeg
• Ubuntu update for libav