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TITLE:
Microsoft Office Communications Server SIP INVITE Denial of Service

SECUNIA ADVISORY ID:
SA32940

VERIFY ADVISORY:
http://secunia.com/advisories/32940/

CRITICAL:
Less critical

IMPACT:
DoS

WHERE:
>From remote

SOFTWARE:
Microsoft Office Communications Server 2007
http://secunia.com/advisories/product/17124/

DESCRIPTION:
A vulnerability has been reported in Microsoft Office Communications
Server, which potentially can be exploited by malicious people to
cause a DoS (Denial of Service).

The vulnerability is caused due to an error in the processing of SIP
messages. This can be exploited to potentially exhaust all available
memory via multiple SIP INVITE messages sent to an affected server.

SOLUTION:
Restrict network access to the application.

PROVIDED AND/OR DISCOVERED BY:
VoIPshield

ORIGINAL ADVISORY:
VoIPshield:
http://www.voipshield.com/research-details.php?id=133

OTHER REFERENCES:
milw0rm:
http://milw0rm.com/exploits/7262

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