CVE-2021-37156 Explained : Impact and Mitigation
Learn about CVE-2021-37156 impacting Redmine versions 4.2.0 and 4.2.1. Understand the vulnerability, its impact, and mitigation steps for improved security.
Redmine 4.2.0 and 4.2.1 versions allow existing user sessions to persist after enabling two-factor authentication, contrary to the intended behavior of terminating those sessions.
Understanding CVE-2021-37156
This CVE affects Redmine versions 4.2.0 and 4.2.1, impacting user session management upon enabling two-factor authentication.
What is CVE-2021-37156?
Redmine versions 4.2.0 and 4.2.1 incorrectly permit existing user sessions to continue even after configuring two-factor authentication.
The Impact of CVE-2021-37156
This vulnerability poses a security risk as it allows unauthorized access to user accounts due to the persistence of existing sessions post two-factor authentication setup.
Technical Details of CVE-2021-37156
The technical details involve the improper handling of user sessions upon enabling two-factor authentication in Redmine.
Vulnerability Description
Redmine 4.2.0 and 4.2.1 fail to terminate existing user sessions as expected, leading to a security loophole in session management.
Affected Systems and Versions
Redmine versions 4.2.0 and 4.2.1 are impacted by this vulnerability, affecting user authentication and session control.
Exploitation Mechanism
Attackers can exploit this vulnerability by taking advantage of the persistence of user sessions and potentially gain unauthorized access to user accounts.
Mitigation and Prevention
To address CVE-2021-37156, immediate steps must be taken to ensure the security of Redmine installations.
Immediate Steps to Take
- Users should manually terminate existing sessions after enabling two-factor authentication.
- Monitor user activity for any suspicious login behavior.
Long-Term Security Practices
- Regularly update Redmine to the latest patched versions to avoid known vulnerabilities.
- Implement multi-factor authentication and session management best practices.
Patching and Updates
Stay informed about security advisories and promptly apply patches provided by Redmine to mitigate the CVE-2021-37156 vulnerability.