#VU44101 Input validation error in FFmpeg - CVE-2011-4031

Vulnerability identifier: #VU44101

Vulnerability risk: High

CVSSv4.0: 8.1 [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/E:U/U:Amber]

CVE-ID: CVE-2011-4031

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
FFmpeg
Universal components / Libraries / Libraries used by multiple products

Vendor: ffmpeg.sourceforge.net

Description

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.

Mitigation
Install update from vendor's website.

Vulnerable software versions

FFmpeg: 0.3 - 0.8.1

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

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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.