CVE-2018-5238 : Security Advisory and Response

Norton Power Eraser and SymDiag, developed by Symantec Corporation, are affected by a DLL Preloading vulnerability. Attackers can exploit this issue by substituting a malicious DLL for execution, potentially leading to unauthorized code execution.

Understanding CVE-2018-5238

This CVE involves a DLL Preloading vulnerability in Norton Power Eraser and SymDiag, allowing attackers to run malicious code within the application's context.

What is CVE-2018-5238?

The vulnerability arises when an application attempts to execute a DLL, and a threat actor replaces it with a harmful DLL. By manipulating the application's DLL search path, attackers can introduce unauthorized code execution.

The Impact of CVE-2018-5238

The DLL Preloading vulnerability in Norton Power Eraser and SymDiag can result in unauthorized code execution within the application, potentially compromising system integrity and confidentiality.

Technical Details of CVE-2018-5238

This section provides in-depth technical insights into the vulnerability.

Vulnerability Description

The DLL Preloading vulnerability in Norton Power Eraser and SymDiag allows attackers to execute malicious code by substituting legitimate DLLs with malicious ones.

Affected Systems and Versions

Norton Power Eraser prior to version 5.3.0.24
SymDiag prior to version 2.1.242

Exploitation Mechanism

Attackers can exploit this vulnerability by manipulating the DLL search path, enabling the execution of unauthorized code within the application's context.

Mitigation and Prevention

Protecting systems from CVE-2018-5238 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update Norton Power Eraser to version 5.3.0.24 or later
Update SymDiag to version 2.1.242 or above
Monitor for any suspicious DLL loading activities

Long-Term Security Practices

Implement DLL search path restrictions
Regularly monitor and audit DLL loading activities
Educate users on safe DLL handling practices

Patching and Updates

Symantec has released patches to address the DLL Preloading vulnerability in Norton Power Eraser and SymDiag. Ensure all systems are updated with the latest versions to mitigate the risk of exploitation.