#VU43707 NULL pointer dereference in FFmpeg and Libav - CVE-2011-3929

Vulnerability identifier: #VU43707

Vulnerability risk: Medium

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

CVE-ID: CVE-2011-3929

CWE-ID: CWE-476

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
FFmpeg
Universal components / Libraries / Libraries used by multiple products
Libav
Client/Desktop applications / Multimedia software

Vendor: ffmpeg.sourceforge.net
Libav

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error. A remote attacker can trigger denial of service conditions via a crafted DV file.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

FFmpeg: 0.7.1 - 0.8.10

Libav: 0.5 - 0.8.10

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External links
https://ffmpeg.org/
https://git.libav.org/?p=libav.git;a=commit;h=635bcfccd439480003b74a665b5aa7c872c1ad6b
https://git.libav.org/?p=libav.git;a=commitdiff;h=5a396bb3a66a61a68b80f2369d0249729bf85e04
https://libav.org/
https://secunia.com/advisories/49089
https://www.debian.org/security/2012/dsa-2471
https://www.ubuntu.com/usn/USN-1479-1

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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.