FFmpeg 2.0 Slice Segment decode_nal_unit memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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A vulnerability, which was classified as problematic, was found in FFmpeg 2.0 (Multimedia Processing Software). This affects the function decode_nal_unit of the component Slice Segment Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The software 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 availability.

The issue has been introduced in 07/11/2013. The weakness was disclosed 02/06/2014 as hevc: check that the VCL NAL types are the same for all slice segments of a frame as confirmed git commit (GIT Repository). The advisory is shared at git.videolan.org. This vulnerability is uniquely identified as CVE-2014-125019. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 210 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 X-Force (91077). The entries 12293, 12294, 12295 and 12296 are pretty similar.





  • open-source

CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.6

VulDB Base Score: 5.3
VulDB Temp Score: 4.6
VulDB Vector: 🔍
VulDB Reliability: 🔍



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


Class: Memory corruption
CWE: CWE-119
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍


Threat Intelligenceinfo

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


Recommended: Patch
Status: 🔍

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

Patch: git.videolan.org


07/11/2013 🔍
02/06/2014 +210 days 🔍
02/06/2014 +0 days 🔍
02/14/2014 +8 days 🔍
06/18/2022 +3046 days 🔍


Product: ffmpeg.org

Advisory: hevc: check that the VCL NAL types are the same for all slice segments of a frame
Status: Confirmed

CVE: CVE-2014-125019 (🔍)
X-Force: 91077 - FFmpeg decode_nal_unit() denial of service, Medium Risk
Secunia: 56838 - FFmpeg Multiple Vulnerabilities, Moderately Critical

See also: 🔍


Created: 02/14/2014 09:18 AM
Updated: 06/18/2022 08:26 AM
Changes: 02/14/2014 09:18 AM (44), 04/16/2019 11:04 AM (8), 06/18/2022 08:26 AM (3)
Complete: 🔍


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