#VU32821 Input validation error in Mozilla Firefox - CVE-2012-0823

Vulnerability identifier: #VU32821

Vulnerability risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2012-0823

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Mozilla Firefox
Client/Desktop applications / Web browsers

Vendor: Mozilla

Description

The vulnerability allows a remote non-authenticated attacker to perform service disruption.

VP8 Codec SDK (libvpx) before 1.0.0 "Duclair" allows remote attackers to cause a denial of service (application crash) via (1) unspecified "corrupt input" or (2) by "starting decoding from a P-frame," which triggers an out-of-bounds read, related to "the clamping of motion vectors in SPLITMV blocks".

Mitigation
Install update from vendor's website.

Vulnerable software versions

Mozilla Firefox: 1.0.1 - 1.0.8

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External links
https://blog.webmproject.org/2012/01/vp8-codec-sdk-duclair-released.html
https://code.google.com/p/webm/source/browse/CHANGELOG?repo=libvpx
https://www.mandriva.com/security/advisories?name=MDVSA-2012:023
https://www.openwall.com/lists/oss-security/2012/01/28/4
https://www.openwall.com/lists/oss-security/2012/01/30/2
https://www.securityfocus.com/bid/51775

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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.