CVE-2020-21991 Explained : Impact and Mitigation
Learn about CVE-2020-21991, an authentication bypass vulnerability in AVE DOMINAplus <=1.10.x, allowing unauthenticated attackers to gain admin privileges without credentials.
AVE DOMINAplus <=1.10.x has an authentication bypass vulnerability that allows unauthenticated attackers to gain admin privileges.
Understanding CVE-2020-21991
What is CVE-2020-21991?
AVE DOMINAplus <=1.10.x is vulnerable to an authentication bypass due to a missing control check when using the autologin GET parameter in the changeparams.php script. This flaw enables attackers to disable authentication security controls and access the management interface with admin privileges without credentials.
The Impact of CVE-2020-21991
This vulnerability allows unauthenticated attackers to bypass security controls and gain unauthorized access to the system with elevated privileges.
Technical Details of CVE-2020-21991
Vulnerability Description
The vulnerability in AVE DOMINAplus <=1.10.x arises from the lack of proper control checks when utilizing the autologin GET parameter in the changeparams.php script.
Affected Systems and Versions
- Product: AVE DOMINAplus
- Vendor: Not applicable
- Versions affected: <=1.10.x
Exploitation Mechanism
By setting the autologin value to 1 in the changeparams.php script, unauthenticated attackers can exploit the vulnerability to disable authentication controls and access the management interface with admin privileges.
Mitigation and Prevention
Immediate Steps to Take
- Disable autologin functionality if not essential
- Monitor access logs for suspicious activities
- Implement strong authentication mechanisms
Long-Term Security Practices
- Regularly update and patch the AVE DOMINAplus software
- Conduct security assessments and audits periodically
Patching and Updates
Apply patches and updates provided by the vendor to address the authentication bypass vulnerability in AVE DOMINAplus.