VDB-10874 · OSVDB 98777

FFmpeg 1.1 Slice Header Decoder libavcodec/vc1dec.c vc1_decode_frame 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
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7.2$0-$5k0.00

A vulnerability, which was classified as critical, has been found in FFmpeg 1.1 (Multimedia Processing Software). Affected by this issue is the function vc1_decode_frame of the file libavcodec/vc1dec.c of the component Slice Header Decoder. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability.

The issue has been introduced in 01/06/2013. The weakness was shared 02/19/2013 by Mateusz Jurczyk and Gynvael Coldwind with Google Security Team as vc1dec: dont decode slices when the slice header failed to decode. as confirmed git commit (GIT Repository). The advisory is available at git.videolan.org. The vendor cooperated in the coordination of the public release. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 44 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.videolan.org. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The entries 10878, 10877, 10876 and 10875 are related to this item.

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.videolan.org

Timelineinfo

01/06/2013 🔍
02/19/2013 +44 days 🔍
02/19/2013 +0 days 🔍
10/23/2013 +246 days 🔍
04/15/2019 +2000 days 🔍

Sourcesinfo

Product: ffmpeg.org

Advisory: vc1dec: dont decode slices when the slice header failed to decode.
Researcher: Mateusz Jurczyk, Gynvael Coldwind
Organization: Google Security Team
Status: Confirmed
Coordinated: 🔍
OSVDB: 98777

See also: 🔍

Entryinfo

Created: 10/23/2013 14:26
Updated: 04/15/2019 10:30
Changes: 10/23/2013 14:26 (50), 04/15/2019 10:30 (2)
Complete: 🔍

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