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XMail < 0.59 APOP Overflow DoS

Critical

Synopsis

The remote host is vulnerable to a buffer overflow.

Description

The remote XMail POP server is vulnerable to a buffer overflow when it receives two long arguments for the APOP command. This problem may allow an attacker to disable this POP server remotely or even to execute arbitrary commands with its privileges (typically, root).

Solution

Upgrade to XMail 0.59 or higher.