This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page.
View CVE-2021-3566 →
DEBIAN-CVE-2021-3566
Prior to ffmpeg version 4.3, the tty demuxer did not have a 'read_probe' function assigned to it. By crafting a legitimate "ffconcat" file that refere...
Original description
The description as published by the source.
Prior to ffmpeg version 4.3, the tty demuxer did not have a 'read_probe' function assigned to it. By crafting a legitimate "ffconcat" file that references an image, followed by a file the triggers the tty demuxer, the contents of the second file will be copied into the output file verbatim (as long as the -vcodec copy option is passed to ffmpeg).
Source: OSV.dev (Open Source Vulnerabilities) OSV
Affected packages
Debian:12
ffmpeg
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7:4.3-2"}]}]
Debian:13
ffmpeg
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7:4.3-2"}]}]
Debian:14
ffmpeg
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7:4.3-2"}]}]
References
- advisory security-tracker.debian.org