VDB-11727 · OSVDB 101744 · GCVE-100-11727

FFmpeg 2.1 libavcodec/hevc.c hevc_decode_free memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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9.5$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in FFmpeg 2.1. Affected by this issue is the function hevc_decode_free of the file libavcodec/hevc.c. Performing a manipulation results in memory corruption. No exploit exists. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability classified as very critical has been found in FFmpeg 2.1 (Multimedia Processing Software). This affects the function hevc_decode_free of the file libavcodec/hevc.c. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability.

The issue has been introduced in 10/29/2013. The weakness was disclosed 12/31/2013 by Mateusz Jurczyk and Gynvael Coldwind with Google Security Team as avcodec/hevc: clear HEVClc when its deallocated in hevc_decode_free() as confirmed git commit (GIT Repository). It is possible to read the advisory at git.videolan.org. The public release has been coordinated in cooperation with the project team. The exploitability is told to be difficult. 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 pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 04/17/2019).

The vulnerability was handled as a non-public zero-day exploit for at least 63 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 (101744†). The entries VDB-11731, VDB-11730, VDB-11729 and VDB-11728 are pretty similar. Be aware that VulDB is the high quality source for vulnerability data.

Affected

  • FFmpeg 2.1
  • Libav 0.8.9

Productinfo

Type

Name

Version

License

Website

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

AVACAuCIA
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💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

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

Physical: No
Local: No
Remote: Yes

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

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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 🔍
12/31/2013 +63 days 🔍
12/31/2013 +0 days 🔍
01/08/2014 +8 days 🔍
04/17/2019 +1925 days 🔍

Sourcesinfo

Product: ffmpeg.org

Advisory: avcodec/hevc: clear HEVClc when its deallocated in hevc_decode_free()
Researcher: Mateusz Jurczyk, Gynvael Coldwind
Organization: Google Security Team
Status: Confirmed
Coordinated: 🔍

GCVE (VulDB): GCVE-100-11727
OSVDB: 101744

See also: 🔍

Entryinfo

Created: 01/08/2014 09:02
Updated: 04/17/2019 18:54
Changes: 01/08/2014 09:02 (51), 04/17/2019 18:54 (2)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

Discussion

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