FFmpeg 1.1.1/1.1.2 libavcodec/vorbisdec.c vorbis_parse_setup_hdr_floors bark_map_size memory corruption

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6.6$0-$5k0.00

A vulnerability has been found in FFmpeg 1.1.1/1.1.2 (Multimedia Processing Software) and classified as critical. Affected by this vulnerability is the function vorbis_parse_setup_hdr_floors of the file libavcodec/vorbisdec.c. The manipulation of the argument bark_map_size with the input value zero leads to a memory corruption vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Buffer overflow in the vorbis_parse_setup_hdr_floors function in the Vorbis decoder in vorbisdec.c in libavcodec in FFmpeg through 1.1.3, as used in Google Chrome before 25.0.1364.97 on Windows and Linux and before 25.0.1364.99 on Mac OS X and other products, allows remote attackers to cause a denial of service (divide-by-zero error or out-of-bounds array access) or possibly have unspecified other impact via vectors involving a zero value for a bark map size.

The weakness was shared 01/11/2013 by Abhishek Arya (Inferno) with Google Chrome Security Team as vorbisdec: Check bark_map_size. as confirmed git commit (GIT Repository). The advisory is shared at git.videolan.org. The vendor cooperated in the coordination of the public release. This vulnerability is known as CVE-2013-0894 since 01/07/2013. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details and also a private exploit are known.

It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 65819 (Ubuntu 12.04 LTS / 12.10 : libav vulnerabilities (USN-1790-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 165877 (SUSE Security Update for Chromium: Updated to 27.0.1425 (openSUSE-SU-2013:0454-1)).

Upgrading to version 25.0.1364.97 eliminates this vulnerability. Applying the patch 33265 is able to eliminate this problem. The bugfix is ready for download at patches.libav.org. The best possible mitigation is suggested to be patching the affected component. A possible mitigation has been published immediately after the disclosure of the vulnerability. Upgrade to Google Chrome version 25.0.1364.97 or higher for Windows and Linux or version 25.0.1364.99 or higher for Mac to address this vulnerability.

The vulnerability is also documented in the databases at X-Force (82290) and Tenable (65819). Additional details are provided at code.google.com. The entries 7790, 7791, 7792 and 7793 are related to this item.

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CPE 2.3info

CPE 2.2info

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CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.6

VulDB Base Score: 7.3
VulDB Temp Score: 6.6
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CVSSv2info

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Exploitinginfo

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

Local: No
Remote: Yes

Availability: 🔍
Access: Private
Status: Proof-of-Concept

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Nessus ID: 65819
Nessus Name: Ubuntu 12.04 LTS / 12.10 : libav vulnerabilities (USN-1790-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 803314
OpenVAS Name: Google Chrome Multiple Vulnerabilities-01 March 2013 (Linux)
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Threat Intelligenceinfo

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Countermeasuresinfo

Recommended: Patch
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Upgrade: FFmpeg 25.0.1364.97
Patch: 33265

Timelineinfo

01/07/2013 🔍
01/11/2013 +4 days 🔍
01/11/2013 +0 days 🔍
02/21/2013 +41 days 🔍
02/21/2013 +0 days 🔍
02/23/2013 +2 days 🔍
02/25/2013 +2 days 🔍
03/05/2013 +8 days 🔍
04/05/2013 +31 days 🔍
05/05/2021 +2952 days 🔍

Sourcesinfo

Product: ffmpeg.org

Advisory: vorbisdec: Check bark_map_size.
Researcher: Abhishek Arya (Inferno)
Organization: Google Chrome Security Team
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2013-0894 (🔍)
OVAL: 🔍

X-Force: 82290
Vulnerability Center: 38631 - Google Chrome Before 25.0.1364.97 \x27Divide-by-Zero\x27 Error Remote Buffer Overflow Vulnerability, Medium
SecurityFocus: 58101 - RETIRED: Google Chrome Multiple Security Vulnerabilities
Secunia: 52320 - Google Chrome Multiple Vulnerabilities, Highly Critical
OSVDB: 90536

scip Labs: https://www.scip.ch/en/?labs.20161013
Misc.: 🔍
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Entryinfo

Created: 02/25/2013 09:13
Updated: 05/05/2021 13:23
Changes: 02/25/2013 09:13 (94), 04/25/2017 11:32 (3), 05/05/2021 13:23 (3)
Complete: 🔍

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