Input validation error in ffmpeg.sourceforge.net FFmpeg

1) Input validation error

EUVDB-ID: #VU44656

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2011-3974

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to perform service disruption.

Integer signedness error in the decode_residual_inter function in cavsdec.c in libavcodec in FFmpeg before 0.7.4 and 0.8.x before 0.8.3 allows remote attackers to cause a denial of service (incorrect write operation and application crash) via an invalid bitstream in a Chinese AVS video (aka CAVS) file, a different vulnerability than CVE-2011-3362.

Mitigation

Install update from vendor's website.

Vulnerable software versions

FFmpeg: 0.3 - 0.8.2

CPE2.3

• cpe:2.3:a:ffmpeg_sourceforge_net:ffmpeg:0.3:*:*:*:*:*:*:*
• cpe:2.3:a:ffmpeg_sourceforge_net:ffmpeg:0.3.1:*:*:*:*:*:*:*
• cpe:2.3:a:ffmpeg_sourceforge_net:ffmpeg:0.3.2:*:*:*:*:*:*:*

External links

https://git.videolan.org/?p=ffmpeg.git;a=commit;h=bd968d260aef322fb32e254a3de0d2036c57bd56
https://www.ffmpeg.org/releases/ffmpeg-0.7.5.changelog
https://www.ffmpeg.org/releases/ffmpeg-0.8.4.changelog
https://www.mandriva.com/security/advisories?name=MDVSA-2012:074
https://www.mandriva.com/security/advisories?name=MDVSA-2012:075
https://www.mandriva.com/security/advisories?name=MDVSA-2012:076

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.