Summaryinfo

A vulnerability was found in FFmpeg 2.0. It has been declared as critical. This issue affects the function lpc_prediction of the file libavcodec/alac.c of the component lpc_order Validation Handler. Such manipulation as part of Missing lpc_order leads to memory corruption. No exploit is available. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability was found in FFmpeg 2.0 (Multimedia Processing Software). It has been rated as very critical. Affected by this issue is the function lpc_prediction of the file libavcodec/alac.c of the component lpc_order Validation Handler. The manipulation as part of a Missing lpc_order 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 09/29/2013 by Mateusz Jurczyk and Gynvael Coldwind with Google Security Team as alac: Do bounds checking of lpc_order read from the bitstream as confirmed git commit (GIT Repository). The advisory is shared for download at git.libav.org. The public release has been coordinated with the vendor. The exploitation is known to be difficult. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 04/16/2019).

The vulnerability was handled as a non-public zero-day exploit for at least 80 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 (97903†). Similar entries are available at VDB-10523, VDB-10522, VDB-10521 and VDB-10519. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Affected

• FFmpeg 2.0
• Libav 9.9

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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