TITLE:
Intellipeer Email Server User Account Enumeration Weakness

SECUNIA ADVISORY ID:
SA12661

VERIFY ADVISORY:
http://secunia.com/advisories/12661/

CRITICAL:
Not critical

IMPACT:
Exposure of system information

WHERE:
>From local network

SOFTWARE:
Intellipeer Email Server 1.x
http://secunia.com/product/3957/

DESCRIPTION:
Ziv Kamir has reported a weakness in Intellipeer Email Server, which
can be exploited by malicious people to determine valid usernames.

The problem is that different error messages are returned by the POP3
service depending on whether an unsuccessful login attempt is
performed with a valid or invalid username.

The weakness has been reported in version 1.01. Other versions may
also be affected.

SOLUTION:
Restrict access to the POP3 service.

Use strong passwords.

PROVIDED AND/OR DISCOVERED BY:
Ziv Kamir

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