CVE-2019-3969 : Exploit Details and Defense Strategies

Comodo Antivirus versions up to 12.0.0.6810 are vulnerable to Local Privilege Escalation due to a flaw in CmdAgent's handling of COM clients. This vulnerability allows a local process to bypass signature checks and gain SYSTEM privileges.

Understanding CVE-2019-3969

Versions of Comodo Antivirus prior to 12.0.0.6810 have a vulnerability that enables Local Privilege Escalation through improper privilege management.

What is CVE-2019-3969?

The vulnerability in Comodo Antivirus versions up to 12.0.0.6810 allows a local process to evade signature checks and access sensitive COM methods in CmdAgent, leading to potential registry modifications with SYSTEM privileges.

The Impact of CVE-2019-3969

Local Privilege Escalation vulnerability
Allows unauthorized access to sensitive COM methods
Potential modification of the registry with SYSTEM privileges

Technical Details of CVE-2019-3969

Comprehensive technical information about the vulnerability.

Vulnerability Description

Vulnerability Type: Improper Privilege Management
Vulnerable Component: CmdAgent
Exploitation Method: Process hollowing

Affected Systems and Versions

Product: Comodo Antivirus
Vendor: Comodo
Vulnerable Versions: Versions 12.0.0.6810 and below

Exploitation Mechanism

By employing process hollowing, a local process can evade the signature check implemented by CmdAgent
Allows compromised process to access sensitive COM methods in CmdAgent

Mitigation and Prevention

Guidelines to mitigate the CVE-2019-3969 vulnerability.

Immediate Steps to Take

Update Comodo Antivirus to version 12.0.0.6810 or above
Monitor system for any suspicious activities
Implement least privilege access controls

Long-Term Security Practices

Regularly update antivirus software and security patches
Conduct security audits and vulnerability assessments
Educate users on safe computing practices

Patching and Updates

Apply security patches provided by Comodo
Stay informed about security advisories and updates from the vendor