CVE-2021-42110 : What You Need to Know
Discover the vulnerability in CVE-2021-42110 affecting Allegro Windows where a standard user can escalate privileges to SYSTEM due to DLL hijacking. Learn the impact, affected systems, and mitigation steps.
An issue was discovered in Allegro Windows (formerly Popsy Windows) before 3.3.4156.1 where a standard user can escalate privileges to SYSTEM due to DLL hijacking.
Understanding CVE-2021-42110
What is CVE-2021-42110?
CVE-2021-42110 is a vulnerability in Allegro Windows that allows a standard user to elevate privileges to SYSTEM when the FTP module is installed, exploiting DLL hijacking.
The Impact of CVE-2021-42110
The vulnerability has a CVSS v3.1 base score of 7.1 (High), with high confidentiality impact and potential for privilege escalation to SYSTEM.
Technical Details of CVE-2021-42110
Vulnerability Description
- An issue in Allegro Windows before version 3.3.4156.1
- DLL hijacking allows standard user to escalate privileges to SYSTEM
Affected Systems and Versions
- Product: Allegro Windows
- Vendor: Popsy Windows
- Affected Version: < 3.3.4156.1
Exploitation Mechanism
- Attack Complexity: Low
- Attack Vector: Adjacent Network
- Privileges Required: None
- User Interaction: None
Mitigation and Prevention
Immediate Steps to Take
- Update to version 3.3.4156.1 or higher
- Disable the FTP module if not required
Long-Term Security Practices
- Regularly monitor for DLL hijacking vulnerabilities
- Implement the principle of least privilege
Patching and Updates
- Apply security patches promptly and consistently