CVE-2019-0217 : Vulnerability Insights and Analysis

A race condition in mod_auth_digest in Apache HTTP Server versions prior to 2.4.38 allows users to authenticate using another username, bypassing access control restrictions.

Understanding CVE-2019-0217

Apache HTTP Server versions prior to 2.4.38 are affected by a race condition vulnerability in mod_auth_digest.

What is CVE-2019-0217?

A race condition in mod_auth_digest in Apache HTTP Server versions prior to 2.4.38
Allows a user to authenticate using someone else's username
Bypasses configured access control restrictions

The Impact of CVE-2019-0217

Enables unauthorized access to resources
Potential data breaches and information disclosure

Technical Details of CVE-2019-0217

Apache HTTP Server versions 2.4.0 to 2.4.38 are vulnerable to an access control bypass due to a race condition in mod_auth_digest.

Vulnerability Description

Race condition in mod_auth_digest
Threaded server environment vulnerability
Allows users to authenticate using another username

Affected Systems and Versions

Product: Apache HTTP Server
Vendor: Apache
Versions: 2.4.0 to 2.4.38

Exploitation Mechanism

Exploits the race condition in mod_auth_digest
User with valid credentials can authenticate using a different username

Mitigation and Prevention

Immediate Steps to Take:

Update Apache HTTP Server to version 2.4.38 or later
Monitor access logs for suspicious activities Long-Term Security Practices:
Regularly update and patch Apache HTTP Server
Implement strong access control and authentication mechanisms
Conduct security audits and penetration testing
Stay informed about security advisories and updates
Educate users on secure authentication practices
Utilize security tools for monitoring and intrusion detection
Follow best practices for web server security

Patching and Updates

Apply security updates and patches promptly
Check vendor advisories for the latest information