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XMail < 2.4 (Build 0530) APOP Remote Format String

High

Synopsis

The remote host is running a version of Magic Winmail Server that is vulnerable to a format string flaw.

Description

The remote host is running a version of Magic Winmail Server that is vulnerable to a format string flaw. An attacker may exploit this vulnerability by connection to the vulnerable mail server and issuing the USER command with malicious format string specifiers. This may result in the crashing of the remote host and/or execution of arbitrary code on the remote host.

Solution

Upgrade to version 2.4 (Build 0530) or higher.