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TITLE:
Nortel SIP Multimedia PC Client Session Handling Denial of Service

SECUNIA ADVISORY ID:
SA30854

VERIFY ADVISORY:
http://secunia.com/advisories/30854/

CRITICAL:
Less critical

IMPACT:
DoS

WHERE:
>From remote

SOFTWARE:
Nortel SIP Multimedia PC Client 4.x
http://secunia.com/product/19179/

DESCRIPTION:
A vulnerability has been reported in Nortel SIP Multimedia PC Client,
which can be exploited by malicious people to cause a DoS (Denial of
Service).

The vulnerability is caused due to an error in the connection
handling and can be exploited to exhaust resources by creating a
large number of sessions.

The vulnerability is reported in version 4.x. Other versions may also
be affected.

SOLUTION:
Use only in a trusted network environment.

PROVIDED AND/OR DISCOVERED BY:
VoIPshield

ORIGINAL ADVISORY:
Nortel:
http://support.nortel.com/go/main.jsp?cscat=BLTNDETAIL&id=738961

VoIPshield:
http://www.voipshield.com/research-details.php?id=61

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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.

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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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