FFmpeg up to 2.7.1 libavcodec/aacsbr.c ff_sbr_apply 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.
5.1$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in FFmpeg up to 2.7.1. This affects the function ff_sbr_apply of the file libavcodec/aacsbr.c. The manipulation leads to memory corruption. This vulnerability is referenced as CVE-2015-6820. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in FFmpeg up to 2.7.1 (Multimedia Processing Software) and classified as problematic. This issue affects the function ff_sbr_apply of the file libavcodec/aacsbr.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. The summary by CVE is:

The ff_sbr_apply function in libavcodec/aacsbr.c in FFmpeg before 2.7.2 does not check for a matching AAC frame syntax element before proceeding with Spectral Band Replication calculations, which allows remote attackers to cause a denial of service (out-of-bounds array access) or possibly have unspecified other impact via crafted AAC data.

The weakness was published 09/06/2015 (Website). The advisory is shared at git.videolan.org. The identification of this vulnerability is CVE-2015-6820 since 09/05/2015. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 86044 (FreeBSD : ffmpeg -- multiple vulnerabilities (3d950687-b4c9-4a86-8478-c56743547af8)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FreeBSD Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 176784 (Debian Security Update for libav (DLA 1611-1)).

Upgrading to version 2.7.2 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (86044), SecurityFocus (BID 77073†) and Vulnerability Center (SBV-53322†). Similar entries are available at VDB-73166, VDB-77583, VDB-77584 and VDB-77586. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
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: 86044
Nessus Name: FreeBSD : ffmpeg -- multiple vulnerabilities (3d950687-b4c9-4a86-8478-c56743547af8)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 841810
OpenVAS Name: Ubuntu Update for libav USN-2944-1
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍
Upgrade: FFmpeg 2.7.2
Patch: 79a98294da6cd85f8c86b34764c5e0c43b09eea3

Timelineinfo

09/05/2015 🔍
09/05/2015 +0 days 🔍
09/05/2015 +0 days 🔍
09/06/2015 +1 days 🔍
09/07/2015 +1 days 🔍
10/09/2015 +32 days 🔍
06/14/2022 +2440 days 🔍

Sourcesinfo

Product: ffmpeg.org

Advisory: USN-2944-1
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-6820 (🔍)
GCVE (CVE): GCVE-0-2015-6820
GCVE (VulDB): GCVE-100-77585
SecurityFocus: 77073
SecurityTracker: 1033483
Vulnerability Center: 53322 - FFmpeg before 2.7.2 Remote DoS or Unspecified Other Impact in ff_sbr_apply Function via Crafted AAC Data, High

See also: 🔍

Entryinfo

Created: 09/07/2015 10:12
Updated: 06/14/2022 10:35
Changes: 09/07/2015 10:12 (62), 02/04/2018 10:27 (6), 06/14/2022 10:29 (6), 06/14/2022 10:35 (1)
Complete: 🔍
Cache ID: 216:3BB:103

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Interested in the pricing of exploits?

See the underground prices here!