CVE-2021-43067 : Vulnerability Insights and Analysis
Learn about CVE-2021-43067 impacting Fortinet FortiAuthenticator. Attackers can duplicate a target LDAP user's token. Find mitigation steps here.
Fortinet FortiAuthenticator versions 6.4.0, 6.3.2, and below are vulnerable to exposure of sensitive information leading to unauthorized access.
Understanding CVE-2021-43067
A exposure of sensitive information to an unauthorized actor in Fortinet FortiAuthenticator versions allows attackers to duplicate a target LDAP user's 2-factor authentication token.
What is CVE-2021-43067?
- Vulnerability in Fortinet FortiAuthenticator versions exposing sensitive information to unauthorized actors
- Attackers can duplicate a target LDAP user's authentication token through crafted HTTP requests
The Impact of CVE-2021-43067
- CVSS Base Score: 7.9 (High)
- Severity: High
- Confidentiality Impact: High
- Integrity Impact: High
- User Interaction: Required
Technical Details of CVE-2021-43067
FortiAuthenticator vulnerability details
Vulnerability Description
- Sensitive information exposure in FortiAuthenticator versions
- Unauthorized access risk to LDAP user authentication token
Affected Systems and Versions
- Fortinet FortiAuthenticator versions 6.4.0, 6.3.2, and below
Exploitation Mechanism
- Attackers exploit vulnerability via crafted HTTP requests
Mitigation and Prevention
Protecting against CVE-2021-43067
Immediate Steps to Take
- Update Fortinet FortiAuthenticator to a non-vulnerable version
- Monitor LDAP user authentication for unusual behavior
Long-Term Security Practices
- Implement strict access controls and authentication mechanisms
- Regularly audit and review network access logs
- Educate users on safe authentication practices
Patching and Updates
- Apply security patches released by Fortinet promptly