mod_usertrack in Apache 1.3.11 through 1.3.20 generates session ID's using predictable information including host IP address, system time and server process ID, which allows local users to obtain session ID's and bypass authentication when these session ID's are used for authentication.
Authenticating a user, or otherwise establishing a new user session, without invalidating any existing session identifier gives an attacker the opportunity to steal authenticated sessions.
Link | Tags |
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http://www.securityfocus.com/bid/3521 | third party advisory vdb entry |
http://www.iss.net/security_center/static/7494.php | vdb entry broken link |
http://cert.uni-stuttgart.de/archive/bugtraq/2001/11/msg00084.html | broken link mailing list |