TITLE:
CommuniGate Pro Server LDAP DN Handling Denial of Service

SECUNIA ADVISORY ID:
SA18701

VERIFY ADVISORY:
http://secunia.com/advisories/18701/

CRITICAL:
Moderately critical

IMPACT:
DoS

WHERE:
>From remote

SOFTWARE:
CommuniGate Pro 5.x
http://secunia.com/product/7170/

DESCRIPTION:
Evgeny Legerov has reported a vulnerability in CommuniGate Pro
Server, which can be exploited by malicious people to cause a DoS
(Denial of Service).

The vulnerability is caused due to an error in the LDAP component
during handling of LDAP requests containing a large number of
elements in the DN (Distinguished Names) field. This can be exploited
to crash the service via a specially-crafted LDAP request.

The vulnerability has been reported in version 5.0.7. Prior versions
may also be affected.

SOLUTION:
Update to version 5.0.8.

PROVIDED AND/OR DISCOVERED BY:
Evgeny Legerov, GLEG Ltd.

ORIGINAL ADVISORY:
CommuniGate Systems:
http://www.stalker.com/CommuniGatePro/History.html

GLEG Ltd.:
http://www.gleg.net/advisory_cg2.shtml

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