libav up to 0.8.2 h264_ps.c ff_h264_decode_seq_parameter_set memory corruption

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.
7.0$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in libav. Affected by this issue is the function ff_h264_decode_seq_parameter_set of the file h264_ps.c. Such manipulation leads to memory corruption. This vulnerability is referenced as CVE-2012-0851. No exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in libav (Multimedia Player Software) and classified as critical. Affected by this issue is the function ff_h264_decode_seq_parameter_set of the file h264_ps.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 confidentiality, integrity, and availability. CVE summarizes:

The ff_h264_decode_seq_parameter_set function in h264_ps.c in libavcodec in FFmpeg before 0.9.1 and in Libav 0.5.x before 0.5.9, 0.6.x before 0.6.6, 0.7.x before 0.7.6, and 0.8.x before 0.8.3 allows remote attackers to cause a denial of service (application crash) and possibly execute arbitrary code via a crafted H.264 file, related to the chroma_format_idc value.

The weakness was published 08/20/2012 (Website). The advisory is shared for download at openwall.com. This vulnerability is handled as CVE-2012-0851 since 01/19/2012. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 59772 (Debian DSA-2494-1 : ffmpeg - several vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks.

Upgrading to version 0.8.2 eliminates this vulnerability. Applying the patch 7fff64e00d886fde11d61958888c82b461cf99b9 is able to eliminate this problem. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at X-Force (78933), Tenable (59772) and Vulnerability Center (SBV-36209†). Similar entries are available at VDB-61708, VDB-61701, VDB-61699 and VDB-61698. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 59772
Nessus Name: Debian DSA-2494-1 : ffmpeg - several vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 71472
OpenVAS Name: Debian Security Advisory DSA 2494-1 (ffmpeg)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: libav 0.8.2
Patch: 7fff64e00d886fde11d61958888c82b461cf99b9

Timelineinfo

01/19/2012 🔍
08/20/2012 +214 days 🔍
08/20/2012 +0 days 🔍
08/20/2012 +0 days 🔍
09/24/2012 +35 days 🔍
03/23/2015 +910 days 🔍
12/08/2021 +2452 days 🔍

Sourcesinfo

Advisory: DSA-2494
Status: Not defined
Confirmation: 🔍

CVE: CVE-2012-0851 (🔍)
GCVE (CVE): GCVE-0-2012-0851
GCVE (VulDB): GCVE-100-61700

OVAL: 🔍

X-Force: 78933
SecurityFocus: 51307
Vulnerability Center: 36209 - FFmpeg and Libav \x27ff_h264_decode_seq_parameter_set\x27 Function Allows Remote DoS\\ Code Execution, Medium

See also: 🔍

Entryinfo

Created: 03/23/2015 16:50
Updated: 12/08/2021 02:27
Changes: 03/23/2015 16:50 (57), 04/17/2017 11:18 (10), 12/08/2021 02:20 (5), 12/08/2021 02:27 (3)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you know our Splunk app?

Download it now for free!