FFmpeg 2.0 libavcodec/pictordec.c memory corruption

Summaryinfo

A vulnerability identified as critical has been detected in FFmpeg 2.0. This vulnerability affects unknown code of the file libavcodec/pictordec.c. The manipulation leads to memory corruption. No exploit is available. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability, which was classified as very critical, has been found in FFmpeg 2.0 (Multimedia Processing Software). This issue affects some unknown functionality of the file libavcodec/pictordec.c. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability.

The issue has been introduced in 07/11/2013. The weakness was published 09/02/2013 by Mateusz Jurczyk and Gynvael Coldwind with Google Security Team as pictordec: break out of both decoding loops when y drops below 0 as confirmed git commit (GIT Repository). The advisory is shared at git.libav.org. The public release has been coordinated with the project team. The exploitation is known to be difficult. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/21/2017).

The vulnerability was handled as a non-public zero-day exploit for at least 53 days. During that time the estimated underground price was around $0-$5k.

Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.libav.org. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at OSVDB (96935†). twitter.com is providing further details. Similar entries are available at VDB-10143, VDB-10144, VDB-10146 and VDB-10147. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Affected

• FFmpeg 2.0
• Libav 0.8.8/9.8

Productinfo

Type

• Multimedia Processing Software

Name

• FFmpeg

Version

• 2.0

License

• open-source

Website

• Product: https://ffmpeg.org/

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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