CVE-2020-28921 Explained : Impact and Mitigation
Discover how CVE-2020-28921 in Devid Espenschied PC Analyser allows unauthorized users to execute arbitrary code and escalate privileges. Learn about impacts, affected systems, and mitigation steps.
Devid Espenschied PC Analyser through 4.10 is affected by a vulnerability that allows low-privilege users to execute arbitrary Ring-0 code and escalate privileges through the PCADRVX64.SYS kernel driver.
Understanding CVE-2020-28921
This CVE identifies a security issue in Devid Espenschied PC Analyser that could lead to privilege escalation.
What is CVE-2020-28921?
An issue in the PCADRVX64.SYS kernel driver allows unauthorized users to access and modify Model Specific Registers, potentially leading to privilege escalation.
The Impact of CVE-2020-28921
Exploitation of this vulnerability could result in arbitrary Ring-0 code execution and the escalation of privileges on the affected system.
Technical Details of CVE-2020-28921
This section provides more technical insights into the vulnerability.
Vulnerability Description
The PCADRVX64.SYS kernel driver in Devid Espenschied PC Analyser through 4.10 exposes IOCTL functionality that permits unauthorized users to read and write to arbitrary Model Specific Registers (MSRs).
Affected Systems and Versions
- Product: Devid Espenschied PC Analyser
- Version: Up to 4.10
Exploitation Mechanism
Unauthorized users with low privileges can exploit the IOCTL functionality in the PCADRVX64.SYS driver to access and manipulate MSRs, potentially leading to privilege escalation.
Mitigation and Prevention
Protecting systems from CVE-2020-28921 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Disable unnecessary services and drivers to reduce the attack surface.
- Monitor system logs for any suspicious activities related to IOCTL requests.
- Apply the latest security patches and updates from the vendor.
Long-Term Security Practices
- Implement the principle of least privilege to restrict user access rights.
- Conduct regular security audits and penetration testing to identify and address vulnerabilities.
Patching and Updates
- Stay informed about security advisories and updates from Devid Espenschied PC Analyser.