VDB-9362 · OSVDB 94885

FFmpeg up to 1.2.1 libavcodec/smacker.c smacker_decode_header_tree off-by-one

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.0$0-$5k0.00

A vulnerability, which was classified as critical, has been found in FFmpeg up to 1.2.1 (Multimedia Processing Software). Affected by this issue is the function smacker_decode_header_tree of the file libavcodec/smacker.c. The manipulation with an unknown input leads to a off-by-one vulnerability. Using CWE to declare the problem leads to CWE-193. A product calculates or uses an incorrect maximum or minimum value that is 1 more, or 1 less, than the correct value. Impacted is confidentiality, integrity, and availability.

The weakness was disclosed 06/12/2013 by Mateusz Jurczyk and Gynvael Coldwind with Google Security Team as smacker: fix an off by one in huff.length computation as confirmed git commit (GIT Repository). The advisory is available at git.videolan.org. The public release has been coordinated in cooperation with the vendor. The exploitation is known to be difficult. The attack needs to be done within the local network. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit.

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 entries 9366, 9365, 9363 and 9360 are pretty similar.

Affected

  • FFmpeg
  • Libav

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: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
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: Off-by-one
CWE: CWE-193 / CWE-189
ATT&CK: Unknown

Local: No
Remote: Partially

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

06/12/2013 🔍
06/12/2013 +0 days 🔍
07/10/2013 +28 days 🔍
05/06/2018 +1761 days 🔍

Sourcesinfo

Product: ffmpeg.org

Advisory: smacker: fix an off by one in huff.length computation
Researcher: Mateusz Jurczyk, Gynvael Coldwind
Organization: Google Security Team
Status: Confirmed
Coordinated: 🔍
OSVDB: 94885

See also: 🔍

Entryinfo

Created: 07/10/2013 11:46
Updated: 05/06/2018 11:36
Changes: 07/10/2013 11:46 (49), 05/06/2018 11:36 (2)
Complete: 🔍
Committer:

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