84
Mercur Mailserver 3.2 multiple buffer overflows
SMTP
2004/03/23
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
Corrected the plugin structure and added the accuracy values in 1.2
tcp
25
open|sleep|close|pattern_exists 220 *MERCUR SMTP-Server (3.2*
80
This plugin was written with the ATK Attack Editor.
http://www.securityfocus.com/advisories/2120
Mercur SMTP-Server 3.2
Mercur SMTP-Server 3.3 and newer
Buffer Overflow
The Mercur Mailserver is a small Mail Transfer Agent (MTA). There were several critical buffer overflows in the system: Within the SMTP command "mail from", the POP3 command "user" and the IMAP command "login". The application will crash if an overly long string is used as an argument to any of these commands. It may also be possible to run arbritrary code with the server privileges.
This issue seems to be resolved in newer versions of Mercur Mailserver. Please update to the latest version.
1 hour
Yes
http://www.securityfocus.com/bid/1051/exploit/
Yes
Yes
High
7
8
9
8
1051
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.securityfocus.com/bid/1051/discussion/