CVE-2009-4633

Severity: critical (CVSS 10.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 7.9% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2010-02-10 · updated 2026-06-16
Weakness: CWE-189

Description

vorbis_dec.c in FFmpeg 0.5 uses an assignment operator when a comparison operator was intended, which might allow remote attackers to cause a denial of service and possibly execute arbitrary code via a crafted file that modifies a loop counter and triggers a heap-based buffer overflow.

Affected products

FFmpeg: 0.5

References

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-2011:060
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

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