libav up to 12.3 AVI File Parser libavutil/buffer.c av_buffer_unref null pointer dereference

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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3.1$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in libav up to 12.3. This issue affects the function av_buffer_unref of the file libavutil/buffer.c of the component AVI File Parser. This manipulation causes null pointer dereference. This vulnerability only affects products that are no longer supported by the maintainer. This vulnerability is tracked as CVE-2025-8584. The attack is restricted to local execution. Moreover, an exploit is present. The bug was initially reported by the researcher to the wrong project.

Detailsinfo

A vulnerability classified as problematic was found in libav up to 12.3. Affected by this vulnerability is the function av_buffer_unref of the file libavutil/buffer.c of the component AVI File Parser. The manipulation with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect availability.

The advisory is shared at trac.ffmpeg.org. This vulnerability is known as CVE-2025-8584. The exploitation appears to be easy. An attack has to be approached locally. Technical details and also a public exploit are known.

It is possible to download the exploit at drive.google.com. It is declared as proof-of-concept. The bug was initially reported by the researcher to the wrong project. The vulnerability scanner Nessus provides a plugin with the ID 253412 (Linux Distros Unpatched Vulnerability : CVE-2025-8584), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Tenable (253412) and CERT Bund (WID-SEC-2025-1728). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Affected

  • Open Source libav

Productinfo

Type

Name

Version

License

Support

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 3.3
VulDB Meta Temp Score: 3.1

VulDB Base Score: 3.3
VulDB Temp Score: 3.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 3.3
CNA Vector: 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 253412
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-8584

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

08/05/2025 Advisory disclosed
08/05/2025 +0 days VulDB entry created
09/04/2025 +30 days VulDB entry last update

Sourcesinfo

Advisory: 11679
Status: Not defined

CVE: CVE-2025-8584 (🔒)
GCVE (CVE): GCVE-0-2025-8584
GCVE (VulDB): GCVE-100-318817
CERT Bund: WID-SEC-2025-1728 - libav: Mehrere Schwachstellen

scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 08/05/2025 11:02
Updated: 09/04/2025 20:40
Changes: 08/05/2025 11:02 (60), 08/06/2025 05:13 (30), 08/06/2025 18:01 (7), 08/24/2025 03:24 (2), 09/04/2025 20:40 (1)
Complete: 🔍
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #621824: libav avconv 13 && the newest master Segmentation fault (by trac.ffmpeg.org)

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion

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