CVE-2021-3566
Medium
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).
SeverityMedium
CVSS5.5
Exploit probability—
Product
Ffmpeg
PublishedAug 5, 2021
First seenAug 5, 2021
Weakness typeCWE-200Sensitive information exposure
How to fix
Update
- ffmpeg ffmpeg4.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| ffmpeg ffmpeg | v < 4.3 | 4.3 |
| debian debian_linux | 9.0 | — |
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