VDB-12093 · OSVDB 102670 · GCVE-100-12093

FFmpeg 2.1 libavcodec/hevc_ps.c ff_hevc_decode_nal_sps null pointer dereference

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.
5.3	$0-$5k	0.00

Summaryinfo

A vulnerability marked as problematic has been reported in FFmpeg 2.1. This issue affects the function ff_hevc_decode_nal_sps of the file libavcodec/hevc_ps.c. Performing a manipulation results in null pointer dereference. There is no available exploit. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability was found in FFmpeg 2.1 (Multimedia Processing Software). It has been classified as problematic. This affects the function ff_hevc_decode_nal_sps of the file libavcodec/hevc_ps.c. The manipulation with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. This is going to have an impact on availability.

The issue has been introduced in 10/29/2013. The weakness was presented 01/18/2014 by Mateusz Jurczyk and Gynvael Coldwind with Google Security Team as hevc: check that VPS referenced from SPS exists as confirmed git commit (GIT Repository). The advisory is shared at git.videolan.org. The public release was coordinated in cooperation with the project team. Technical details are known, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 81 days. During that time the estimated underground price was around $0-$5k.

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 vulnerability database at OSVDB (102670†). See VDB-12097, VDB-12096, VDB-12095 and VDB-12094 for similar entries. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Affected

FFmpeg 2.1
Libav 0.8.9

Productinfo

Type

Multimedia Processing Software

Name

FFmpeg

Version

License

open-source

Website

Product: https://ffmpeg.org/

CPE 2.3info

🔍

CPE 2.2info

🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Patch: git.videolan.org

Timelineinfo

10/29/2013 🔍
01/18/2014 +81 days 🔍
01/18/2014 +0 days 🔍
01/31/2014 +13 days 🔍
04/18/2019 +1903 days 🔍

Sourcesinfo

Product: ffmpeg.org

Advisory: hevc: check that VPS referenced from SPS exists
Researcher: Mateusz Jurczyk, Gynvael Coldwind
Organization: Google Security Team
Status: Confirmed
Coordinated: 🔍

GCVE (VulDB): GCVE-100-12093
OSVDB: 102670

See also: 🔍

Entryinfo

Created: 01/31/2014 10:02
Updated: 04/18/2019 10:20
Changes: 01/31/2014 10:02 (50), 04/18/2019 10:20 (2)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.