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TITLE:
MailEnable SMTP Service HELO Denial of Service

SECUNIA ADVISORY ID:
SA20790

VERIFY ADVISORY:
http://secunia.com/advisories/20790/

CRITICAL:
Moderately critical

IMPACT:
DoS

WHERE:
>From remote

SOFTWARE:
MailEnable Professional 2.x
http://secunia.com/product/10625/
MailEnable Professional 1.x
http://secunia.com/product/3474/
MailEnable Enterprise Edition 2.x
http://secunia.com/product/10427/
MailEnable Enterprise Edition 1.x
http://secunia.com/product/4325/
MailEnable Standard 1.x
http://secunia.com/product/3882/

DESCRIPTION:
DivisionByZero has reported a vulnerability in MailEnable, which can
be exploited by malicious people to cause a DoS (Denial of Service).

The vulnerability is caused due to an error within the SMTP service
when handling the HELO command. This can be exploited to crash the
service via a HELO command with specially crafted arguments.

The vulnerability has been reported in the following products:
* MailEnable Standard (all versions)
* MailEnable Professional (all versions)
* MailEnable Enterprise (all versions)

SOLUTION:
Apply Hotfix.
http://www.mailenable.com/hotfix/MESMTPC.ZIP

PROVIDED AND/OR DISCOVERED BY:
DivisionByZero

ORIGINAL ADVISORY:
http://www.divisionbyzero.be/?p=173

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