VDB-10447 · SA54921 · OSVDB 97405

FFmpeg 2.0 Sample Rate matroskadec.c matroska_read_header denial of service

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.7	$0-$5k	0.00

Summaryinfo

A vulnerability has been found in FFmpeg 2.0 and classified as problematic. This affects the function matroska_read_header of the file libavformat/matroskadec.c of the component Sample Rate Handler. This manipulation causes denial of service. No exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in FFmpeg 2.0 (Multimedia Processing Software). It has been declared as problematic. Affected by this vulnerability is the function matroska_read_header of the file libavformat/matroskadec.c of the component Sample Rate Handler. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability.

The issue has been introduced in 07/11/2013. The weakness was disclosed 08/18/2013 by Michael Niedermayer as avformat/matroskadec: check out_samplerate before using it in av_rescale as confirmed git commit (GIT Repository). It is possible to read the advisory at git.videolan.org. The public release has been coordinated in cooperation with the project team. The exploitation appears to be difficult. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 38 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 0.11.4 eliminates this vulnerability. The upgrade is hosted for download at ffmpeg.org. Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.videolan.org. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published 2 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at OSVDB (97405†) and Secunia (SA54921†). Additional details are provided at git.videolan.org. The entries VDB-10448, VDB-10452 and VDB-10453 are pretty similar. Be aware that VulDB is the high quality source for vulnerability data.

Affected

FFmpeg 2.0
Libav 9.8

Productinfo

Type

Multimedia Processing Software

Name

FFmpeg

Version

License

open-source

Website

Product: https://ffmpeg.org/

CPE 2.3info

🔍

CPE 2.2info

🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.7

VulDB Base Score: 5.9
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: FFmpeg 0.11.4
Patch: git.videolan.org

Timelineinfo

07/11/2013 🔍
08/18/2013 +38 days 🔍
08/28/2013 +10 days 🔍
09/19/2013 +22 days 🔍
09/24/2013 +5 days 🔍
04/15/2019 +2029 days 🔍

Sourcesinfo

Product: ffmpeg.org

Advisory: avformat/matroskadec: check out_samplerate before using it in av_rescale
Researcher: Michael Niedermayer
Status: Confirmed
Coordinated: 🔍

GCVE (VulDB): GCVE-100-10447
Secunia: 54921 - FFmpeg Multiple Vulnerabilities, Moderately Critical
OSVDB: 97405

Misc.: 🔍
See also: 🔍

Entryinfo

Created: 09/24/2013 13:04
Updated: 04/15/2019 23:27
Changes: 09/24/2013 13:04 (60), 04/15/2019 23:27 (1)
Complete: 🔍
Committer:
Cache ID: 216::103