CVE-2021-3566

描述

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).

如何修補 CVE-2021-3566

要修補 CVE-2021-3566,請將受影響套件升級到下列已修補版本。

• Debian/ffmpeg—升級至 7:4.3-2 或更新版本

CVE-2021-3566 正在被利用嗎?

低 — EPSS 為 0.9%,目前沒有觀察到大規模利用活動。

受影響套件(1)

• from 0, < 7:4.3-2

CVSS 分數

參考連結(1)

• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2021-3566