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TITLE:
Nokia N95 SIP Message Processing Denial of Service Weakness

SECUNIA ADVISORY ID:
SA27945

VERIFY ADVISORY:
http://secunia.com/advisories/27945/

CRITICAL:
Not critical

IMPACT:
DoS

WHERE:
>From remote

OPERATING SYSTEM:
Nokia N95 12.x
http://secunia.com/product/16809/

DESCRIPTION:
Humberto J. Abdelnur, Radu State, and Olivier Festor have reported a
weakness in Nokia N95, which can be exploited by malicious people to
cause a DoS (Denial of Service).

The weakness is caused due to an error in processing SIP messages and
can be exploited to cause the phone to become unresponsive via a
specially crafted sequence of SIP messages.

Successful exploitation requires that the SIP client is enabled.

The weakness is reported in a Nokia N95 with firmware version
12.0.013. Other phones and versions may also be affected.

SOLUTION:
Disable the SIP client.

PROVIDED AND/OR DISCOVERED BY:
Humberto J. Abdelnur, Radu State, and Olivier Festor, MADYNES
research team

ORIGINAL ADVISORY:
http://lists.grok.org.uk/pipermail/full-disclosure/2007-December/058839.html

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