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Courier Mail Server < 0.53.2 Crafted Username Encoding DoS

High

Synopsis

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

Description

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 '

Solution

Upgrade to version 0.53.2 or higher.