Input validation error in FFmpeg

1) Input validation error

EUVDB-ID: #VU110616

Risk: High

CVSSv4.0: 8.1 [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-2009-4633

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

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.

Mitigation

Install update from vendor's website.

Vulnerable software versions

FFmpeg: All versions

CPE2.3

• cpe:2.3:a:ffmpeg_sourceforge_net:ffmpeg:*:*:*:*:*:*:*:*

External links

https://scarybeastsecurity.blogspot.com/2009/09/patching-ffmpeg-into-shape.html
https://secunia.com/advisories/36805
https://secunia.com/advisories/38643
https://secunia.com/advisories/39482
https://www.debian.org/security/2010/dsa-2000
https://www.mandriva.com/security/advisories?name=MDVSA-2011:060
https://www.mandriva.com/security/advisories?name=MDVSA-2011:061
https://www.mandriva.com/security/advisories?name=MDVSA-2011:088
https://www.mandriva.com/security/advisories?name=MDVSA-2011:112
https://www.mandriva.com/security/advisories?name=MDVSA-2011:114
https://www.securityfocus.com/bid/36465
https://www.ubuntu.com/usn/USN-931-1
https://www.vupen.com/english/advisories/2010/0935
https://www.vupen.com/english/advisories/2011/1241
https://roundup.ffmpeg.org/roundup/ffmpeg/issue1240

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.