Alt-N MDaemon 2.8.5.0 UIDL DoS Vulnerability

A remote user is capable of crashing Alt-N MDaemon 2.8.5.0 by executing the pass command, then the UIDL command and quitting the mail server before the UIDL has returned a response. This must be done before the user is presented with the POP3 login banner. Restarting the application is required in order to regain normal functionality.


 

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