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Description

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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 leads to double free. Attacking locally is a requirement. The exploit has been disclosed to the public and may be used. The bug was initially reported by the researcher to the wrong project. This vulnerability only affects products that are no longer supported by the maintainer.

Eine kritische Schwachstelle wurde in libav bis 12.3 entdeckt. Betroffen davon ist die Funktion main der Datei /avtools/avconv.c der Komponente DSS File Demuxer. Mittels dem Manipulieren mit unbekannten Daten kann eine double free-Schwachstelle ausgenutzt werden. Der Angriff muss lokal passieren. Der Exploit steht zur öffentlichen Verfügung.

PUBLISHED Reserved 2025-08-05 | Published 2025-08-05 | Updated 2025-08-06 | Assigner VulDB




MEDIUM: 4.8CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
MEDIUM: 5.3CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
MEDIUM: 5.3CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
4.3AV:L/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR

Problem types

Double Free

Memory Corruption

Timeline

2025-08-05:Advisory disclosed
2025-08-05:VulDB entry created
2025-08-05:VulDB entry last update

References

vuldb.com/?submit.621825 exploit

trac.ffmpeg.org/ticket/11680 exploit

vuldb.com/?id.318818 (VDB-318818 | libav DSS File Demuxer avconv.c main double free) vdb-entry technical-description

vuldb.com/?ctiid.318818 (VDB-318818 | CTI Indicators (IOB, IOC, IOA)) signature permissions-required

vuldb.com/?submit.621825 (Submit #621825 | libav avconv 13 && the newest master Double-free) third-party-advisory

trac.ffmpeg.org/ticket/11680 issue-tracking

drive.google.com/...56UdeSTgya_GGxLZxwuxUPw/view?usp=sharing exploit

cve.org (CVE-2025-8585)

nvd.nist.gov (CVE-2025-8585)

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