Input validation error in FFmpeg - CVE-2009-4634
Published: October 26, 2011 / Updated: June 8, 2025
Vulnerability identifier: #VU110615
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2009-4634
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: ffmpeg.sourceforge.net
Affected software:
FFmpeg
FFmpeg
Detailed vulnerability description
The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
Multiple integer underflows in FFmpeg 0.5 allow remote attackers to cause a denial of service and possibly execute arbitrary code via a crafted file that (1) bypasses a validation check in vorbis_dec.c and triggers a wraparound of the stack pointer, or (2) access a pointer from out-of-bounds memory in mov.c, related to an elst tag that appears before a tag that creates a stream.
How to mitigate CVE-2009-4634
Install update from vendor's website.
Sources
- http://scarybeastsecurity.blogspot.com/2009/09/patching-ffmpeg-into-shape.html
- http://secunia.com/advisories/36805
- http://secunia.com/advisories/38643
- http://secunia.com/advisories/39482
- http://www.debian.org/security/2010/dsa-2000
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:059
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:060
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:061
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:088
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:112
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:114
- http://www.securityfocus.com/bid/36465
- http://www.ubuntu.com/usn/USN-931-1
- http://www.vupen.com/english/advisories/2010/0935
- http://www.vupen.com/english/advisories/2011/1241
- https://roundup.ffmpeg.org/roundup/ffmpeg/issue1240