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True North eMailServer < 5.3.4 Build 2019 LIST Command Remote DoS

Medium

Synopsis

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

Description

The remote host is running the True North eMailServer. This version of eMailServer is vulnerable to a content-parsing flaw where a malformed IMAP request can cause the server to fail. An attacker exploiting this flaw would be able to disable the service remotely.

Solution

Upgrade to version 5.3.4 Build 2019 or higher.