CVE-2018-20621 Explained : Impact and Mitigation
Learn about CVE-2018-20621, a vulnerability in Microvirt MEmu 6.0.6 allowing local privilege escalation. Find out how to mitigate the risk and prevent unauthorized code execution.
A vulnerability has been detected in version 6.0.6 of Microvirt MEmu, allowing for a local privilege escalation attack through incorrect permissions.
Understanding CVE-2018-20621
What is CVE-2018-20621?
CVE-2018-20621 is a vulnerability in Microvirt MEmu version 6.0.6 that enables a local privilege escalation attack by exploiting incorrect permissions during installation.
The Impact of CVE-2018-20621
The vulnerability allows an attacker to execute code as NT AUTHORITY/SYSTEM, potentially leading to unauthorized access and control of the affected system.
Technical Details of CVE-2018-20621
Vulnerability Description
The MemuService.exe service binary in Microvirt MEmu 6.0.6 is susceptible to local privilege escalation due to insecure permissions set during installation, enabling unauthorized code execution.
Affected Systems and Versions
- Product: Microvirt MEmu
- Version: 6.0.6
Exploitation Mechanism
The vulnerability can be exploited by an attacker to run malicious code as NT AUTHORITY/SYSTEM, gaining elevated privileges on the system.
Mitigation and Prevention
Immediate Steps to Take
- Avoid running untrusted software on systems with Microvirt MEmu 6.0.6 installed.
- Monitor for any unauthorized system changes or suspicious activities.
Long-Term Security Practices
- Regularly update and patch Microvirt MEmu to the latest version to mitigate known vulnerabilities.
- Implement the principle of least privilege to restrict access and limit the impact of potential attacks.
Patching and Updates
Apply security patches provided by Microvirt promptly to address the vulnerability and enhance system security.