SynopsisThe remote host is vulnerable to a Denial of Service (DoS) attack.
DescriptionThe 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.
SolutionUpgrade to version 5.3.4 Build 2019 or higher.