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Micro Focus GroupWise Session ID Disclosure

Posted on 27 January 2023

Micro Focus GroupWise is a messaging software for email and personal information management. Trovent Security GmbH discovered that the GroupWise web application transmits the session ID in HTTP GET requests in the URL when email content is accessed. The exposed session ID can be recorded in the browser history of the client and in log files of the web server or reverse proxy server. A possible attacker with access to the browser history or the server log files is able to take control of the user session with the help of the session ID. Versions prior to 18.4.2 are affected.