FFmpeg up to 2.1.3 wmalosslessdec.c memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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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).






CPE 2.3info

CPE 2.2info


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

VulDB Base Score: 5.3
VulDB Temp Score: 4.6
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Class: Memory corruption
CWE: CWE-119

Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

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Nessus ID: 89899
Nessus Name: GLSA-201603-06 : FFmpeg: Multiple vulnerabilities
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OpenVAS ID: 18627
OpenVAS Name: Gentoo Linux Local Check: https://security.gentoo.org/glsa/201603-06
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Threat Intelligenceinfo

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Recommended: Patch
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Patch: git.videolan.org


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 🔍


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


Created: 03/13/2014 03:25 PM
Updated: 06/18/2022 08:20 AM
Replaces Duplicates: 🔍
Changes: 03/13/2014 03:25 PM (75), 04/17/2019 09:41 AM (5), 06/18/2022 08:20 AM (3)
Complete: 🔍
Cache ID: 3:476:40


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