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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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About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

Subscribe:
http://secunia.com/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

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