CVE-2021-43271 Explained : Impact and Mitigation
Learn about CVE-2021-43271 affecting Riverbed AppResponse versions 11.8.0 to 11.11.5a. Understand the exposure of incorrect usernames and passwords in error logs and how to mitigate this security risk.
Riverbed AppResponse versions 11.8.0 to 11.11.5a, when using local, RADIUS, or TACACS authentication, may expose usernames and passwords in error logs.
Understanding CVE-2021-43271
Riverbed AppResponse versions may log incorrect usernames and passwords, potentially exposing them in error messages.
What is CVE-2021-43271?
Riverbed AppResponse versions 11.8.0 to 11.11.5a, configured with certain authentication methods, can inadvertently log incorrect login credentials in error messages.
The Impact of CVE-2021-43271
- Incorrect usernames and passwords may be logged in error messages within the WebUI log file
- Risk of unauthorized access to sensitive information
Technical Details of CVE-2021-43271
Riverbed AppResponse vulnerability specifics
Vulnerability Description
- Incorrectly entered usernames and passwords are logged in WebUI error messages
- No log entry for correct credentials or SAML authentication
Affected Systems and Versions
- Riverbed AppResponse versions 11.8.0 to 11.11.5a
- Configured with local, RADIUS, or TACACS authentication
Exploitation Mechanism
- User enters incorrect credentials into the WebUI, leading to inclusion in error messages
Mitigation and Prevention
Steps to address the vulnerability
Immediate Steps to Take
- Review access controls and limit the number of login attempts
- Monitor logs for suspicious activities
Long-Term Security Practices
- Use strong, unique passwords
- Implement multi-factor authentication where possible
Patching and Updates
- Apply patches and updates provided by Riverbed to fix the vulnerability