#VU43579 Input validation error in FFmpeg - CVE-2012-2775

Vulnerability identifier: #VU43579

Vulnerability risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2012-2775

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.

Unspecified vulnerability in the read_var_block_data function in libavcodec/alsdec.c in FFmpeg before 0.11, and Libav 0.7.x before 0.7.7 and 0.8.x before 0.8.4, has unknown impact and attack vectors, related to a large order and an "out of array write in quant_cof."

Mitigation
Install update from vendor's website.

Vulnerable software versions

FFmpeg: 0.3 - 0.10.3

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External links
https://ffmpeg.org/security.html
https://git.videolan.org/?p=ffmpeg.git;a=commitdiff;h=9d3032b960ae03066c008d6e6774f68b17a1d69d
https://libav.org/releases/libav-0.7.7.changelog
https://libav.org/releases/libav-0.8.4.changelog
https://secunia.com/advisories/50468
https://secunia.com/advisories/51257
https://www.mandriva.com/security/advisories?name=MDVSA-2013:079
https://www.openwall.com/lists/oss-security/2012/08/31/3
https://www.openwall.com/lists/oss-security/2012/09/02/4
https://www.securityfocus.com/bid/55355

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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.