Buffer overflow in Libav and FFmpeg - CVE-2011-3945
Published: August 20, 2012 / Updated: August 11, 2020
Vulnerability identifier: #VU43684
CSH Severity: Medium
CVSS v4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2011-3945
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to read and manipulate data.
The decode_frame function in the KVG1 decoder (kgv1dec.c) in libavcodec in FFmpeg 0.7.x before 0.7.12 and 0.8.x before 0.8.11, and in Libav 0.5.x before 0.5.9, 0.6.x before 0.6.6, 0.7.x before 0.7.5, and 0.8.x before 0.8.1, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted media file.
Affected software
Libav
FFmpeg
Gentoo Linux
Ubuntu
libavcodec52 (Ubuntu package)
libavformat52 (Ubuntu package)
libavcodec53 (Ubuntu package)
libavformat53 (Ubuntu package)
FFmpeg
Gentoo Linux
Ubuntu
libavcodec52 (Ubuntu package)
libavformat52 (Ubuntu package)
libavcodec53 (Ubuntu package)
libavformat53 (Ubuntu package)
How to mitigate CVE-2011-3945
Install update from vendor's website.
libavcodec52 (Ubuntu package) - update to 4:0.6.6-0ubuntu0.11.04.1
libavformat52 (Ubuntu package) - update to 4:0.6.6-0ubuntu0.11.04.1
libavcodec53 (Ubuntu package) - addressed in versions 4:0.7.6-0ubuntu0.11.10.1, 4:0.8.3-0ubuntu0.12.04.1
libavformat53 (Ubuntu package) - addressed in versions 4:0.7.6-0ubuntu0.11.10.1, 4:0.8.3-0ubuntu0.12.04.1
libavformat52 (Ubuntu package) - update to 4:0.6.6-0ubuntu0.11.04.1
libavcodec53 (Ubuntu package) - addressed in versions 4:0.7.6-0ubuntu0.11.10.1, 4:0.8.3-0ubuntu0.12.04.1
libavformat53 (Ubuntu package) - addressed in versions 4:0.7.6-0ubuntu0.11.10.1, 4:0.8.3-0ubuntu0.12.04.1