#VU43673 Cryptographic issues in Comodo Internet Security - CVE-2011-5121

Vulnerability identifier: #VU43673

Vulnerability 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-2011-5121

CWE-ID: CWE-310

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Comodo Internet Security
Client/Desktop applications / Antivirus software/Personal firewalls

Vendor: Comodo Group

Description

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

The Antivirus component in Comodo Internet Security before 5.3.175888.1227 does not properly check whether unspecified X.509 certificates are revoked, which has unknown impact and remote attack vectors.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Comodo Internet Security: 3.0.14.276 - 5.0.163652.1142

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External links
https://personalfirewall.comodo.com/release_notes.html

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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.