CVE-2021-42923 : Security Advisory and Response
Discover how CVE-2021-42923 affects ShowMyPC 3606 on Windows with a DLL hijack vulnerability, enabling attackers to execute malicious code and effective mitigation strategies.
ShowMyPC 3606 on Windows has a DLL hijack vulnerability that allows an attacker to execute malicious code with user privileges.
Understanding CVE-2021-42923
What is CVE-2021-42923?
ShowMyPC 3606 on Windows is vulnerable to a DLL hijack exploit that enables an attacker to run malicious code by overwriting a specific file.
The Impact of CVE-2021-42923
The vulnerability in ShowMyPC 3606 can be exploited to execute arbitrary code with user privileges, compromising the system's security.
Technical Details of CVE-2021-42923
Vulnerability Description
An attacker can replace the file %temp%\ShowMyPC-ShowMyPC3606\wodVPN.dll to execute arbitrary code when ShowMyPC runs, unless as an administrator.
Affected Systems and Versions
- Product: ShowMyPC 3606
- Vendor: N/A
- Version: N/A
Exploitation Mechanism
The attacker must overwrite the specified DLL file to run malicious code with regular user privileges.
Mitigation and Prevention
Immediate Steps to Take
- Restrict execution permissions in the %temp% directory.
- Regularly update ShowMyPC and Windows OS for patches.
Long-Term Security Practices
- Implement the principle of least privilege to limit user access.
- Conduct regular security training to educate users on safe computing practices.
Patching and Updates
Apply patches and updates provided by the software vendor to address the DLL hijacking vulnerability in ShowMyPC 3606.