VDB-11740 · OSVDB 101829 · GCVE-100-11740

FFmpeg 2.1 Memory Access libavcodec/h264.c decode_nal_units 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 categorized as problematic has been discovered in FFmpeg 2.1. This vulnerability affects the function decode_nal_units of the file libavcodec/h264.c of the component Memory Access Handler. Executing a manipulation can lead to an unknown weakness. No exploit is 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 decode_nal_units of the file libavcodec/h264.c of the component Memory Access Handler. The impact remains unknown.

The issue has been introduced in 10/29/2013. The weakness was published 01/03/2014 by Mateusz Jurczyk and Gynvael Coldwind with Google Security Team as h264: reset data_partitioning if decoding the slice header for NAL_DPA fails as confirmed git commit (GIT Repository). The advisory is shared for download at git.videolan.org. The public release has been 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 66 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 (101829†). Similar entries are available at VDB-11744, VDB-11743, VDB-11742 and VDB-11741. Once again VulDB remains the best source for vulnerability data.

Affected

FFmpeg 2.1
Libav 0.8.9

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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💳	💳	💳	💳	💳	💳
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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

10/29/2013 🔍
01/03/2014 +66 days 🔍
01/03/2014 +0 days 🔍
01/08/2014 +5 days 🔍
04/18/2019 +1926 days 🔍

Sourcesinfo

Product: ffmpeg.org

Advisory: h264: reset data_partitioning if decoding the slice header for NAL_DPA fails
Researcher: Mateusz Jurczyk, Gynvael Coldwind
Organization: Google Security Team
Status: Confirmed
Coordinated: 🔍

GCVE (VulDB): GCVE-100-11740
OSVDB: 101829

See also: 🔍

Entryinfo

Created: 01/08/2014 16:29
Updated: 04/18/2019 06:58
Changes: 01/08/2014 16:29 (52), 04/18/2019 06:58 (1)
Complete: 🔍
Cache ID: 216::103