#VU43695 Buffer overflow in FFmpeg - CVE-2012-0850

Vulnerability identifier: #VU43695

Vulnerability 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-2012-0850

CWE-ID: CWE-119

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 perform service disruption.

The sbr_qmf_synthesis function in libavcodec/aacsbr.c in FFmpeg before 0.9.1 allows remote attackers to cause a denial of service (application crash) via a crafted mpg file that triggers memory corruption involving the v_off variable, probably a buffer underflow.

Mitigation
Install update from vendor's website.

Vulnerable software versions

FFmpeg: 0.3 - 0.8.11

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External links
https://ffmpeg.org/security.html
https://git.videolan.org/?p=ffmpeg.git;a=commit;h=944f5b2779e4aa63f7624df6cd4de832a53db81b
https://www.openwall.com/lists/oss-security/2012/02/01/11
https://www.openwall.com/lists/oss-security/2012/02/14/4
https://exchange.xforce.ibmcloud.com/vulnerabilities/78934

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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.