Input validation error in FFmpeg - CVE-2013-3671
Published: June 10, 2013 / Updated: June 8, 2025
Vulnerability identifier: #VU110608
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2013-3671
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to perform service disruption.
The format_line function in log.c in libavutil in FFmpeg before 1.2.1 uses inapplicable offset data during a certain category calculation, which allows remote attackers to cause a denial of service (invalid pointer dereference and application crash) via crafted data that triggers a log message.
Affected software
FFmpeg
How to mitigate CVE-2013-3671
Install update from vendor's website.
FFmpeg - update to 1.2.1