VDB-10415 · OSVDB 97462 · GCVE-100-10415

FFmpeg 2.0 Mid-Stream Codec Parameter Updater libavformat/vocdec.c ff_voc_get_packet Remote Code Execution

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 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-$5k	0.00

Summaryinfo

A vulnerability classified as problematic has been found in FFmpeg 2.0. This impacts the function ff_voc_get_packet of the file libavformat/vocdec.c of the component Mid-Stream Codec Parameter Updater. The manipulation of the argument Codec leads to an unknown weakness. No exploit is available. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in FFmpeg 2.0 (Multimedia Processing Software). This issue affects the function ff_voc_get_packet of the file libavformat/vocdec.c of the component Mid-Stream Codec Parameter Updater. The manipulation of the argument Codec 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 published 09/16/2013 by Mateusz Jurczyk and Gynvael Coldwind with Google Security Team as vocdec: Don't update codec parameters mid-stream as confirmed git commit (GIT Repository). It is possible to read the advisory at git.libav.org. The public release has been coordinated 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 67 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 (97462†). Similar entries are available at VDB-10419, VDB-10418, VDB-10417 and VDB-10416. Be aware that VulDB is the high quality source for vulnerability data.

Affected

FFmpeg 2.0
Libav 9.9

Productinfo

Type

Multimedia Processing Software

Name

FFmpeg

Version

License

open-source

Website

Product: https://ffmpeg.org/

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

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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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: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

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 🔍
09/16/2013 +67 days 🔍
09/16/2013 +0 days 🔍
09/23/2013 +7 days 🔍
08/26/2017 +1433 days 🔍

Sourcesinfo

Product: ffmpeg.org

Advisory: vocdec: Don't update codec parameters mid-stream
Researcher: Mateusz Jurczyk, Gynvael Coldwind
Organization: Google Security Team
Status: Confirmed
Coordinated: 🔍

GCVE (VulDB): GCVE-100-10415
OSVDB: 97462

See also: 🔍

Entryinfo

Created: 09/23/2013 14:44
Updated: 08/26/2017 06:41
Changes: 09/23/2013 14:44 (53), 08/26/2017 06:41 (1)
Complete: 🔍
Cache ID: 216::103