SB2011102604 - Division by zero in FFmpeg
Published: October 26, 2011 Updated: June 8, 2025
Security Bulletin ID
SB2011102604
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Division by zero (CVE-ID: CVE-2009-4639)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to divide-by-zero error within The av_rescale_rnd function in the AVI demuxer in FFmpeg 0.5. A remote attacker can perform a denial of service (crash) via a crafted AVI file that triggers a divide-by-zero error.
Remediation
Install update from vendor's website.
References
- http://scarybeastsecurity.blogspot.com/2009/09/patching-ffmpeg-into-shape.html
- http://secunia.com/advisories/36805
- http://secunia.com/advisories/39482
- 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.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
- https://roundup.ffmpeg.org/roundup/ffmpeg/issue1245