Candidate: CVE-2021-3566
PublicDate: 2021-08-05 21:15:00 UTC
References:
 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3566
 https://github.com/FFmpeg/FFmpeg/commit/3bce9e9b3ea35c54bacccc793d7da99ea5157532#diff-74f6b92a0541378ad15de9c29c0a2b0c69881ad9ffc71abe568b88b535e00a7f
Description:
 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).
Ubuntu-Description:
Notes:
Mitigation:
Bugs:
Priority: medium
Discovered-by:
Assigned-to:
CVSS:
 nvd: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N [5.5 MEDIUM]


Patches_ffmpeg:
 upstream: https://github.com/FFmpeg/FFmpeg/commit/3bce9e9b3ea35c54bacccc793d7da99ea5157532#diff-74f6b92a0541378ad15de9c29c0a2b0c69881ad9ffc71abe568b88b535e00a7f
upstream_ffmpeg: released (4.3)
trusty_ffmpeg: ignored (out of standard support)
trusty/esm_ffmpeg: DNE
xenial_ffmpeg: ignored (out of standard support, was needed)
bionic_ffmpeg: needed
focal_ffmpeg: needed
hirsute_ffmpeg: not-affected (4.3)
impish_ffmpeg: not-affected (7:4.4-6ubuntu5)
jammy_ffmpeg: not-affected (7:4.4.1-3ubuntu2)
devel_ffmpeg: not-affected (7:4.4.1-3ubuntu2)