VDB-11596 · OSVDB 101343 · GCVE-100-11596

FFmpeg 2.1 Uninitialized Data libavcodec/vc1dec.c vc1_draw_sprites Remote Code Execution

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

Summaryinfo

A vulnerability was found in FFmpeg 2.1 and classified as problematic. This affects the function vc1_draw_sprites of the file libavcodec/vc1dec.c of the component Uninitialized Data Handler. Executing a manipulation can lead to an unknown weakness. There is not any exploit available. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability has been found in FFmpeg 2.1 (Multimedia Processing Software) and classified as problematic. This vulnerability affects the function vc1_draw_sprites of the file libavcodec/vc1dec.c of the component Uninitialized Data Handler. The impact remains unknown.

The issue has been introduced in 10/29/2013. The weakness was released 12/14/2013 by Mateusz Jurczyk and Gynvael Coldwind with Google Security Team as avcodec/vc1dec: dont calculate unused values from uninitialized sprites as confirmed git commit (GIT Repository). The advisory is shared for download at git.videolan.org. The public release was coordinated with the vendor. The exploitation appears to be difficult. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 46 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 vulnerability is also documented in the vulnerability database at OSVDB (101343†). Entries connected to this vulnerability are available at VDB-11599, VDB-11598, VDB-11597 and VDB-11595. Once again VulDB remains the best source for vulnerability data.

Affected

  • FFmpeg 2.1
  • Libav 0.8.9

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
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💳💳💳💳💳💳
💳💳💳💳💳💳
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.videolan.org

Timelineinfo

10/29/2013 🔍
12/14/2013 +46 days 🔍
12/14/2013 +0 days 🔍
12/24/2013 +10 days 🔍
04/17/2019 +1940 days 🔍

Sourcesinfo

Product: ffmpeg.org

Advisory: avcodec/vc1dec: dont calculate unused values from uninitialized sprites
Researcher: Mateusz Jurczyk, Gynvael Coldwind
Organization: Google Security Team
Status: Confirmed
Coordinated: 🔍

GCVE (VulDB): GCVE-100-11596
OSVDB: 101343

See also: 🔍

Entryinfo

Created: 12/24/2013 23:36
Updated: 04/17/2019 14:49
Changes: 12/24/2013 23:36 (52), 04/17/2019 14:49 (1)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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