VideoLAN VLC Media Player up to 1.1.6.1 mkv.hpp input validation

CVSS Meta Temp Score
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CTI Interest Score
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9.5$0-$5k0.00

Summaryinfo

A vulnerability was found in VideoLAN VLC Media Player up to 1.1.6.1. It has been rated as critical. This issue affects some unknown processing of the file modules/demux/mkv/mkv.hpp. The manipulation leads to input validation. This vulnerability is uniquely identified as CVE-2011-0531. The attack is possible to be carried out remotely. Moreover, an exploit is present. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability was found in VideoLAN VLC Media Player up to 1.1.6.1 (Multimedia Player Software). It has been rated as very critical. This issue affects an unknown function of the file modules/demux/mkv/mkv.hpp. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

demux/mkv/mkv.hpp in the MKV demuxer plugin in VideoLAN VLC media player 1.1.6.1 and earlier allows remote attackers to cause a denial of service (crash) and execute arbitrary commands via a crafted MKV (WebM or Matroska) file that triggers memory corruption, related to "class mismatching" and the MKV_IS_ID macro.

The weakness was disclosed 01/30/2011 by Dan Rosenberg (Website). The advisory is shared at videolan.org. The identification of this vulnerability is CVE-2011-0531 since 01/20/2011. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details as well as a public exploit are known. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 05/11/2025).

A public exploit has been developed in Ruby. The exploit is available at securityfocus.com. It is declared as highly functional. The vulnerability scanner Nessus provides a plugin with the ID 51851 (VLC Media Player < 1.1.7 MKV Input Validation Vulnerability), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows. The commercial vulnerability scanner Qualys is able to test this issue with plugin 119236 (VLC Media Player MKV Demuxer "MKV_IS_ID" Vulnerability (VideoLAN-SA-1102)).

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 databases at X-Force (65045), Exploit-DB (16637), Tenable (51851), SecurityFocus (BID 46060†) and OSVDB (70698†). The entry VDB-56356 is pretty similar. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 10.0
VulDB Meta Temp Score: 9.5

VulDB Base Score: 10.0
VulDB Temp Score: 9.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

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

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Highly functional
Programming Language: 🔍
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 51851
Nessus Name: VLC Media Player < 1.1.7 MKV Input Validation Vulnerability
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 68993
OpenVAS Name: Debian Security Advisory DSA 2159-1 (vlc)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Saint ID: exploit_info/vlc_mkv_demuxer
Saint Name: VideoLAN VLC Media Player MKV Demuxer Code Execution

Qualys ID: 🔍
Qualys Name: 🔍

MetaSploit ID: vlc_webm.rb
MetaSploit Name: VideoLAN VLC MKV Memory Corruption
MetaSploit File: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Patch: 59491dcedffbf97612d2c572943b56ee4289dd07
McAfee IPS: 🔍
McAfee IPS Version: 🔍

PaloAlto IPS: 🔍
Fortigate IPS: 🔍

Timelineinfo

01/20/2011 🔍
01/30/2011 +10 days 🔍
01/30/2011 +0 days 🔍
01/30/2011 +0 days 🔍
01/30/2011 +0 days 🔍
01/31/2011 +1 days 🔍
02/02/2011 +1 days 🔍
02/02/2011 +0 days 🔍
02/07/2011 +5 days 🔍
02/07/2011 +0 days 🔍
03/20/2015 +1502 days 🔍
05/11/2025 +3705 days 🔍

Sourcesinfo

Vendor: videolan.org

Advisory: dsa-2159
Researcher: Dan Rosenberg
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2011-0531 (🔍)
GCVE (CVE): GCVE-0-2011-0531
GCVE (VulDB): GCVE-100-56357

OVAL: 🔍

X-Force: 65045
SecurityFocus: 46060 - VLC Media Player MKV File Parsing Remote Code Execution Vulnerability
Secunia: 43131
OSVDB: 70698 - VLC Media Player MKV Demuxer modules/demux/mkv/mkv.hpp MKV_IS_ID Macro Arbitrary Code Execution
SecurityTracker: 1025018 - VLC Media Player MKV File Input Validation Flaw Lets Remote Users Execute Arbitrary Code
Vulnerability Center: 29585 - VLC Media Player 1.1.6.1 and Earlier Remote Code Execution via a Crafted MKV File, Medium
Vupen: ADV-2011-0363

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 03/20/2015 16:16
Updated: 05/11/2025 17:08
Changes: 03/20/2015 16:16 (82), 05/06/2019 07:13 (16), 10/13/2021 21:21 (4), 10/13/2021 21:34 (1), 10/13/2021 21:46 (1), 01/18/2025 23:15 (16), 05/11/2025 17:08 (1)
Complete: 🔍
Cache ID: 216::103

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