CVE-2019-18215 : What You Need to Know

A vulnerability has been identified in signmgr.dll version 6.5.0.819 in Comodo Internet Security up to version 12.0. This vulnerability enables an attacker to insert an unsigned DLL called iLog.dll into a product directory that is only partially protected. The DLL is then loaded into a service with elevated privileges before the validation logic for binary signatures is loaded. As a result, certain self-defense mechanisms may be bypassed.

Understanding CVE-2019-18215

This CVE identifies a DLL Preloading vulnerability in Comodo Internet Security that allows an attacker to implant a malicious DLL into a vulnerable directory.

What is CVE-2019-18215?

The vulnerability in signmgr.dll version 6.5.0.819 in Comodo Internet Security up to version 12.0 allows an attacker to load an unsigned DLL into a service with elevated privileges, potentially bypassing security mechanisms.

The Impact of CVE-2019-18215

The vulnerability could be exploited by an attacker to execute arbitrary code with elevated privileges, compromising the security of the affected system.

Technical Details of CVE-2019-18215

This section provides more in-depth technical details about the vulnerability.

Vulnerability Description

The issue arises from the improper loading of an unsigned DLL named iLog.dll into a partially protected directory, allowing it to be executed with elevated privileges.

Affected Systems and Versions

Comodo Internet Security versions up to 12.0

Exploitation Mechanism

Attacker inserts the unsigned DLL into a vulnerable directory
DLL is loaded into a service with elevated privileges
Bypasses binary signature validation logic

Mitigation and Prevention

Protecting systems from this vulnerability requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply security patches provided by Comodo to fix the DLL Preloading vulnerability
Monitor for any suspicious activities on the system

Long-Term Security Practices

Implement secure coding practices to prevent DLL Preloading vulnerabilities
Regularly update and patch software to address security flaws

Patching and Updates

Stay informed about security updates from Comodo and apply them promptly to mitigate the risk of exploitation.