CVE-2009-4639

Public Exploit

Description

The av_rescale_rnd function in the AVI demuxer in FFmpeg 0.5 allows remote attackers to cause a denial of service (crash) via a crafted AVI file that triggers a divide-by-zero error.

Category

4.3
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 4.12% Top 15%
Vendor Advisory mandriva.com Vendor Advisory mandriva.com Vendor Advisory mandriva.com Vendor Advisory mandriva.com Vendor Advisory mandriva.com Vendor Advisory ubuntu.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.mandriva.com/security/advisories?name=MDVSA-2011:088 vendor advisory
http://secunia.com/advisories/36805 third party advisory
http://www.securityfocus.com/bid/36465 vdb entry
http://secunia.com/advisories/39482 third party advisory
https://roundup.ffmpeg.org/roundup/ffmpeg/issue1240
http://www.mandriva.com/security/advisories?name=MDVSA-2011:061 vendor advisory
https://roundup.ffmpeg.org/roundup/ffmpeg/issue1245
http://www.mandriva.com/security/advisories?name=MDVSA-2011:112 vendor advisory
http://scarybeastsecurity.blogspot.com/2009/09/patching-ffmpeg-into-shape.html exploit
http://www.mandriva.com/security/advisories?name=MDVSA-2011:059 vendor advisory
http://www.vupen.com/english/advisories/2011/1241 vdb entry
http://www.mandriva.com/security/advisories?name=MDVSA-2011:060 vendor advisory
http://www.ubuntu.com/usn/USN-931-1 vendor advisory
http://www.vupen.com/english/advisories/2010/0935 vdb entry

Frequently Asked Questions

What is the severity of CVE-2009-4639?
CVE-2009-4639 has been scored as a medium severity vulnerability.
How to fix CVE-2009-4639?
To fix CVE-2009-4639, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2009-4639 being actively exploited in the wild?
It is possible that CVE-2009-4639 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~4% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.