FFmpeg up to 2.1.3 wmalosslessdec.c memory corruption

EntryHistoryDiffjsonxmlCTI

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.
4.6	$0-$5k	0.04

A vulnerability was found in FFmpeg up to 2.1.3 (Multimedia Processing Software). It has been rated as problematic. Affected by this issue is an unknown code of the file wmalosslessdec.c. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is availability. CVE summarizes:

libavcodec/wmalosslessdec.c in FFmpeg before 2.1.4 uses an incorrect data-structure size for certain coefficients, which allows remote attackers to cause a denial of service (memory corruption) or possibly have unspecified other impact via crafted WMA data.

The issue has been introduced in 07/11/2013. The weakness was published 03/10/2014 by Mateusz Jurczyk and Gynvael Coldwind (j00ru) with Google Security Team as avcodec/wmalosslessdec: fix mclms_coeffs* array size as confirmed git commit (GIT Repository). The advisory is available at git.videolan.org. This vulnerability is handled as CVE-2014-2098 since 02/24/2014. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 233 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 89899 (GLSA-201603-06 : FFmpeg: Multiple vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Gentoo Local Security Checks and running in the context l.

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 3 years after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (91663) and Tenable (89899). Similar entries are available at 7624, 7625, 7628 and 7630.

Productinfo

Type

Multimedia Processing Software

Name

FFmpeg

Version

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.6

VulDB Base Score: 5.3
VulDB Temp Score: 4.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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Exploitinginfo

Class: Memory corruption
CWE: CWE-119
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

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EPSS Percentile: 🔍

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0-Day	unlock	unlock	unlock	unlock
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Nessus ID: 89899
Nessus Name: GLSA-201603-06 : FFmpeg: Multiple vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 18627
OpenVAS Name: Gentoo Linux Local Check: https://security.gentoo.org/glsa/201603-06
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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Countermeasuresinfo

Recommended: Patch
Status: 🔍

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Patch: git.videolan.org

Timelineinfo

07/11/2013 🔍
02/24/2014 +228 days 🔍
03/01/2014 +5 days 🔍
03/07/2014 +6 days 🔍
03/10/2014 +3 days 🔍
03/13/2014 +3 days 🔍
03/12/2016 +730 days 🔍
03/14/2016 +2 days 🔍
06/18/2022 +2287 days 🔍

Sourcesinfo

Product: ffmpeg.org

Advisory: avcodec/wmalosslessdec: fix mclms_coeffs* array size
Researcher: Mateusz Jurczyk, Gynvael Coldwind (j00ru)
Organization: Google Security Team
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2014-2098 (🔍)
X-Force: 91663 - FFmpeg wmalosslessdec.c denial of service, Medium Risk
SecurityFocus: 66057 - FFmpeg and Libav 'libavcodec/wmalosslessdec.c' Memory Corruption Vulnerability

See also: 🔍

Entryinfo

Created: 03/13/2014 15:25
Updated: 06/18/2022 08:20
Replaces Duplicates: 🔍
Changes: 03/13/2014 15:25 (75), 04/17/2019 09:41 (5), 06/18/2022 08:20 (3)
Complete: 🔍