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-$5k	0.00

A vulnerability, which was classified as problematic, was found in FFmpeg up to 2.7.1 (Multimedia Processing Software). This affects the function decode_ihdr_chunk of the file libavcodec/pngdec.c. The manipulation with an unknown input leads to a code vulnerability. CWE is classifying the issue as CWE-17. This is going to have an impact on availability. The summary by CVE is:

The decode_ihdr_chunk function in libavcodec/pngdec.c in FFmpeg before 2.7.2 does not enforce uniqueness of the IHDR (aka image header) chunk in a PNG image, which allows remote attackers to cause a denial of service (out-of-bounds array access) or possibly have unspecified other impact via a crafted image with two or more or these chunks.

The weakness was presented 09/06/2015 (Website). It is possible to read the advisory at git.videolan.org. This vulnerability is uniquely identified as CVE-2015-6818 since 09/05/2015. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit.

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 vulnerability database at Tenable (86044). See 73166, 77584, 77585 and 77586 for similar entries.

Productinfo

Type

• Multimedia Processing Software

Name

• FFmpeg

Version

• 2.7.0
• 2.7.1

License

• open-source

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
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

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Code
CWE: CWE-17
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

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: 47f4e2d8960ca756ca153ab8e3e93d80449b8c91

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-2015-6818 (🔍)
SecurityTracker: 1033483
Vulnerability Center: 53324 - FFmpeg before 2.7.2 Remote DoS or Unspecified Other Impact in decode_ihdr_chunk Function via a Crafted Image, High
SecurityFocus: 77073

See also: 🔍

Entryinfo

Created: 09/07/2015 10:12
Updated: 06/14/2022 10:10
Changes: 09/07/2015 10:12 (62), 02/04/2018 10:29 (6), 06/14/2022 10:05 (6), 06/14/2022 10:10 (1)
Complete: 🔍

Discussion

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