93 Kerio MailServer prior 6.0.1 buffer overflow smtp check SMTP 2004/08/17 Marc Ruef marc dot ruef at computec dot ch http://www.computec.ch computec.ch Marc Ruef marc dot ruef at computec dot ch http://www.computec.ch computec.ch 2004/11/13 1.2 Enhanced the plugin in version 1.1. Corrected the plugin structure and added the accuracy values in 1.2 tcp 25 open|sleep|close|pattern_exists *220 *Kerio MailServer [0-5].* OR *220 *Kerio MailServer 6.0.[0-1]* 80 Check is copied from the Nessus plugin (see Nessus ID listed in the sources). http://www.kerio.com Kerio 2004/08/12 http://www.kerio.com/kms_history.html Kerio MailServer prior 6.0.1 Kerio MailServer newer than 6.0.1 Buffer Overflow The remote host is running a version of Kerio MailServer prior to 6.0.1.Kerio Mailserver is an SMTP server which ships with an embedded HTTP server. It has been reported that there are multiple remote overflows in versions of Kerio prior to 6.0.1, although the exact nature of these overflows is not yet known. The server should be deactivated or de-installed if not necessary. To make it harder to find the server the daemon could be configured to listen at another port (e.g. 8025). Try to prevent unwanted connection attempts by filtering traffic with firewalling. Alternation of the application banner can confuse an attacker and let him determine the wrong software. Upgrade the software to the latest version. Approx. 2 hours No http://www.securityfocus.com/bid/10936/exploit/ Yes Yes High 4 5 9 7 High Nessus is able to do the same check. 10936 14279 Hacking Exposed: Network Security Secrets & Solutions, Stuart McClure, Joel Scambray and George Kurtz, February 25, 2003, 4th Edition, McGraw-Hill Osborne Media, ISBN 0072227427 http://www.computec.ch