libav up to 12.3 DSS File Demuxer /avtools/avconv.c main double free

CVSS Meta Temp Score
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CTI Interest Score
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5.0$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in libav up to 12.3. Impacted is the function main of the file /avtools/avconv.c of the component DSS File Demuxer. Such manipulation leads to double free. This vulnerability only affects products that are no longer supported by the maintainer. This vulnerability is listed as CVE-2025-8585. The attack must be carried out locally. In addition, an exploit is available. The bug was initially reported by the researcher to the wrong project.

Detailsinfo

A vulnerability, which was classified as critical, has been found in libav up to 12.3. Affected by this issue is the function main of the file /avtools/avconv.c of the component DSS File Demuxer. The manipulation with an unknown input leads to a double free vulnerability. Using CWE to declare the problem leads to CWE-415. The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations. Impacted is confidentiality, integrity, and availability.

The advisory is available at trac.ffmpeg.org. This vulnerability is handled as CVE-2025-8585. The exploitation is known to be easy. Local access is required to approach this attack. Technical details as well as a public exploit are known.

The exploit is available 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 253581 (Linux Distros Unpatched Vulnerability : CVE-2025-8585), 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 (253581) and CERT Bund (WID-SEC-2025-1728). If you want to get best quality of vulnerability data, you may have to visit VulDB.

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: 5.3
VulDB Meta Temp Score: 5.0

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 5.3
CNA Vector: 🔒

CVSSv2info

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

Exploitinginfo

Class: Double free
CWE: CWE-415 / CWE-119
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: 253581
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-8585

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
08/22/2025 +17 days VulDB entry last update

Sourcesinfo

Advisory: 11680
Status: Not defined

CVE: CVE-2025-8585 (🔒)
GCVE (CVE): GCVE-0-2025-8585
GCVE (VulDB): GCVE-100-318818
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: 08/22/2025 18:20
Changes: 08/05/2025 11:02 (59), 08/06/2025 05:13 (30), 08/06/2025 18:11 (7), 08/07/2025 04:57 (1), 08/22/2025 18:20 (2)
Complete: 🔍
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #621825: libav avconv 13 && the newest master Double-free (by trac.ffmpeg.org)

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Discussion

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