VDB-10521 · OSVDB 97904

FFmpeg 2.0 Invalid Bits-Per-Coded-Sample libavformat/xwma.c xwma_read_header denial of service

CVSS Meta Temp Score
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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
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7.2$0-$5k0.00

A vulnerability classified as critical has been found in FFmpeg 2.0 (Multimedia Processing Software). This affects the function xwma_read_header of the file libavformat/xwma.c of the component Invalid Bits-Per-Coded-Sample Handler. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability.

The issue has been introduced in 07/11/2013. The weakness was released 09/29/2013 by Mateusz Jurczyk and Gynvael Coldwind with Google Security Team as xwma: Avoid division by zero as confirmed git commit (GIT Repository). The advisory is shared at git.libav.org. The public release was coordinated with the project team. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available.

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.

Entries connected to this vulnerability are available at 10523, 10522, 10520 and 10519.

Affected

  • FFmpeg 2.0
  • Libav 9.9

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.2

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
ATT&CK: T1499

Local: No
Remote: Yes

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

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Patch: git.libav.org

Timelineinfo

07/11/2013 🔍
09/29/2013 +80 days 🔍
09/29/2013 +0 days 🔍
10/01/2013 +2 days 🔍
04/16/2019 +2023 days 🔍

Sourcesinfo

Product: ffmpeg.org

Advisory: xwma: Avoid division by zero
Researcher: Mateusz Jurczyk, Gynvael Coldwind
Organization: Google Security Team
Status: Confirmed
Coordinated: 🔍
OSVDB: 97904

See also: 🔍

Entryinfo

Created: 10/01/2013 15:03
Updated: 04/16/2019 09:07
Changes: 10/01/2013 15:03 (52), 04/16/2019 09:07 (2)
Complete: 🔍

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