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Courier Mail Server < 0.53.2 Crafted Username Encoding DoS



The remote host is vulnerable to a Denial of Service (DoS) attack.


The remote host is running Courier Mail Server, an open source mail server for Linux and Unix. The installed version of Courier is prone to a flaw in the way that it handles malformed 'login' strings. Specifically, an attacker who sends a username that includes a '


Upgrade to version 0.53.2 or higher.