CVE-2017-6329 : Exploit Details and Defense Strategies

Symantec VIP Access for Desktop prior to version 2.2.4 is vulnerable to a DLL Pre-Loading issue, allowing the execution of a foreign executable within the application's context.

Understanding CVE-2017-6329

Symantec VIP Access for Desktop version earlier than 2.2.4 may have a vulnerability related to DLL Pre-Loading.

What is CVE-2017-6329?

The vulnerability arises when an application is tricked into using a malicious DLL instead of the intended one, leading to the execution of a foreign executable within the application's context.

The Impact of CVE-2017-6329

Exploitation of this vulnerability can result in the execution of a foreign executable within the application's context, potentially through a simple file write or over-write.

Technical Details of CVE-2017-6329

Symantec VIP Access for Desktop prior to 2.2.4 is susceptible to a DLL Pre-Loading vulnerability.

Vulnerability Description

The issue occurs when an application attempts to execute a DLL and is provided with a malicious DLL by an attacker, leading to the execution of a foreign executable.

Affected Systems and Versions

Product: VIP Access for Desktop
Vendor: Symantec Corporation
Versions Affected: prior to 2.2.4

Exploitation Mechanism

Attackers provide a malicious DLL for the application to use instead of the legitimate one.
The application follows a specific search path to locate the DLL, allowing the malicious DLL to be executed.

Mitigation and Prevention

Immediate Steps to Take:

Update Symantec VIP Access for Desktop to version 2.2.4 or later.
Monitor for any unusual DLL loading activities. Long-Term Security Practices:
Regularly update software and security patches.
Implement secure coding practices to prevent DLL Pre-Loading vulnerabilities.
Conduct security training to raise awareness about DLL-related risks.
Utilize security tools to detect and prevent DLL injection attacks.

Patching and Updates

Ensure all software, including Symantec VIP Access for Desktop, is regularly updated to the latest versions to mitigate DLL Pre-Loading vulnerabilities.