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Intellipeer User Account Enumeration

Medium

Synopsis

The remote host may give an attacker information useful for future attacks.

Description

The remote host is running a POP3 service that allows a remote attacker to determine when a user account is valid. An attacker exploiting this flaw would only need to connect to the port repeatedly while sending different user names. The server will alert the attacker whenever a valid username is sent. This vulnerability is known to affect Intellipeer POP3 server (versions less than or equal to 1.0.1).

Solution

Upgrade or patch according to vendor recommendations.