FFmpeg up to 1.2.1 libavcodec/sonic.c modified_levinson_durbin off-by-one

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.
4.8	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in FFmpeg up to 1.2.1. The impacted element is the function modified_levinson_durbin of the file libavcodec/sonic.c. Such manipulation leads to off-by-one. The attack must be carried out from within the local network. There is no available exploit. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability was found in FFmpeg up to 1.2.1 (Multimedia Processing Software). It has been rated as critical. Affected by this issue is the function modified_levinson_durbin of the file libavcodec/sonic.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 presented 06/19/2013 by Mateusz Jurczyk and Gynvael Coldwind with Google Security Team as sonicenc: fix off by 1 error as confirmed git commit (GIT Repository). The advisory is shared for download at git.videolan.org. The public release was coordinated in cooperation with the vendor. The exploitation is known to be difficult. The attack can only be initiated within the local network. No form of authentication is required for exploitation. There are known technical details, but no exploit is available.

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 (94917†). See VDB-9372, VDB-9370, VDB-9367 and VDB-9366 for similar entries. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Affected

FFmpeg
Libav

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: 5.0
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.0
VulDB Temp Score: 4.8
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: Off-by-one
CWE: CWE-193 / CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

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.videolan.org

Timelineinfo

06/19/2013 🔍
06/19/2013 +0 days 🔍
07/10/2013 +21 days 🔍
02/24/2017 +1325 days 🔍

Sourcesinfo

Product: ffmpeg.org

Advisory: sonicenc: fix off by 1 error
Researcher: Mateusz Jurczyk, Gynvael Coldwind
Organization: Google Security Team
Status: Confirmed
Coordinated: 🔍

GCVE (VulDB): GCVE-100-9368
OSVDB: 94917 - FFmpeg / Libav libavcodec/sonic.c modified_levinson_durbin Function Off-by-one Out-of-array Access Issue

See also: 🔍

Entryinfo

Created: 07/10/2013 12:08
Updated: 02/24/2017 21:21
Changes: 07/10/2013 12:08 (50), 02/24/2017 21:21 (2)
Complete: 🔍
Committer:
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.