VDB-10463 · OSVDB 97641 · GCVE-100-10463

FFmpeg 2.0 Initialization libavcodec/vc1dec.c vc1_decode_skip_blocks last_picture Remote Code Execution

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability was found in FFmpeg 2.0. It has been classified as problematic. This affects the function vc1_decode_skip_blocks of the file libavcodec/vc1dec.c of the component Initialization Handler. The manipulation of the argument last_picture leads to an unknown weakness. There is no available exploit. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability was found in FFmpeg 2.0 (Multimedia Processing Software) and classified as problematic. This issue affects the function vc1_decode_skip_blocks of the file libavcodec/vc1dec.c of the component Initialization Handler. The manipulation of the argument last_picture with an unknown input leads to a unknown weakness. The impact remains unknown.

The issue has been introduced in 07/11/2013. The weakness was presented 09/22/2013 by Mateusz Jurczyk and Gynvael Coldwind with Google Security Team as vc1dec: Make sure last_picture is initialized in vc1_decode_skip_blocks as confirmed git commit (GIT Repository). It is possible to read the advisory at git.libav.org. The public release was coordinated in cooperation with the project team. The exploitation is known to be difficult. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. 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 73 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 (97641†). See VDB-10467, VDB-10466, VDB-10465 and VDB-10464 for similar entries. Be aware that VulDB is the high quality source for vulnerability data.

Affected

  • FFmpeg 2.0
  • Libav 9.9

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.4

VulDB Base Score: 5.6
VulDB Temp Score: 5.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Remote Code Execution
CWE: Unknown
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
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 🔍
09/22/2013 +73 days 🔍
09/22/2013 +0 days 🔍
09/25/2013 +3 days 🔍
04/16/2019 +2028 days 🔍

Sourcesinfo

Product: ffmpeg.org

Advisory: vc1dec: Make sure last_picture is initialized in vc1_decode_skip_blocks
Researcher: Mateusz Jurczyk, Gynvael Coldwind
Organization: Google Security Team
Status: Confirmed
Coordinated: 🔍

GCVE (VulDB): GCVE-100-10463
OSVDB: 97641

See also: 🔍

Entryinfo

Created: 09/25/2013 10:23
Updated: 04/16/2019 00:05
Changes: 09/25/2013 10:23 (53), 04/16/2019 00:05 (1)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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