VDB-9156 · CVE-2013-0856 · OSVDB 94250

FFmpeg 1.0 libavcodec/alac.c lpc_prediction input validation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.7$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in FFmpeg 1.0. This issue affects the function lpc_prediction of the file libavcodec/alac.c. The manipulation results in input validation. This vulnerability is identified as CVE-2013-0856. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as critical, was found in FFmpeg 1.0 (Multimedia Processing Software). Affected is the function lpc_prediction of the file libavcodec/alac.c. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

The lpc_prediction function in libavcodec/alac.c in FFmpeg before 1.1 allows remote attackers to have an unspecified impact via crafted Apple Lossless Audio Codec (ALAC) data, related to a large nb_samples value.

The issue has been introduced in 09/30/2012. The weakness was released 11/10/2012 by Mateusz Jurczyk and Gynvael Coldwind with Google Security Team as alac: fix nb_samples < order case as confirmed git commit (GIT Repository). The advisory is shared for download at git.videolan.org. The public release was coordinated with the vendor. This vulnerability is traded as CVE-2013-0856 since 01/07/2013. The exploitability is told to be difficult. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 41 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 1.1 eliminates this vulnerability. The upgrade is hosted for download at git.videolan.org. Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.videolan.org. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at OSVDB (94250†). Entries connected to this vulnerability are available at VDB-9160, VDB-9159, VDB-9158 and VDB-9157. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.1
VulDB Meta Temp Score: 7.7

VulDB Base Score: 8.1
VulDB Temp Score: 7.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: FFmpeg 1.1
Patch: git.videolan.org

Timelineinfo

09/30/2012 🔍
11/10/2012 +41 days 🔍
11/10/2012 +0 days 🔍
01/07/2013 +58 days 🔍
06/17/2013 +161 days 🔍
12/07/2013 +173 days 🔍
04/15/2019 +1955 days 🔍

Sourcesinfo

Product: ffmpeg.org

Advisory: alac: fix nb_samples < order case
Researcher: Mateusz Jurczyk, Gynvael Coldwind
Organization: Google Security Team
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2013-0856 (🔍)
GCVE (CVE): GCVE-0-2013-0856
GCVE (VulDB): GCVE-100-9156
OSVDB: 94250

See also: 🔍

Entryinfo

Created: 06/17/2013 10:22
Updated: 04/15/2019 09:38
Changes: 06/17/2013 10:22 (64), 04/15/2019 09:38 (1)
Complete: 🔍
Cache ID: 216:C6B:103

Once again VulDB remains the best source for vulnerability data.

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