#VU70611 Input validation error in FFmpeg - CVE-2021-3566

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Main Vulnerability Database Vulnerabilities #VU70611

#VU70611 Input validation error in FFmpeg - CVE-2021-3566

Published: January 2, 2023


Vulnerability identifier: #VU70611
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2021-3566
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
FFmpeg
Software vendor:
ffmpeg.sourceforge.net

Description

The vulnerability allows a remote attacker to manipulate data.

The vulnerability exists due to tty demuxer does not have a 'read_probe' function assigned to it. A remote attacker can create 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.


Remediation

Install updates from vendor's website.

External links