ALT-PU-2021-1331-1
Closed vulnerabilities
Published: 2020-01-29
BDU:2021-05271
Уязвимость демультиплексора tty мультимедийной библиотеки FFmpeg, связанная с раскрытием информации, позволяющая нарушителю получить доступ к конфиденциальным данным
Severity: MEDIUM (6.5)
Vector: AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
References:
Published: 2021-08-06
Modified: 2024-11-21
Modified: 2024-11-21
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 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).
Severity: MEDIUM (5.5)
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
References:
- https://github.com/FFmpeg/FFmpeg/commit/3bce9e9b3ea35c54bacccc793d7da99ea5157532#diff-74f6b92a0541378ad15de9c29c0a2b0c69881ad9ffc71abe568b88b535e00a7f
- https://github.com/FFmpeg/FFmpeg/commit/3bce9e9b3ea35c54bacccc793d7da99ea5157532#diff-74f6b92a0541378ad15de9c29c0a2b0c69881ad9ffc71abe568b88b535e00a7f
- [debian-lts-announce] 20210815 [SECURITY] [DLA 2742-1] ffmpeg security update
- [debian-lts-announce] 20210815 [SECURITY] [DLA 2742-1] ffmpeg security update