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Cisco IP Phone 7940/7960 SIP Message Sequence Denial of Service

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Release Date:  2007-08-21    Last Update:  2007-08-22    Views:  20,341

Secunia Advisory SA26547

Where:

From remote

Impact:

DoS

Solution Status:

Vendor Patch

CVE Reference(s):

No CVE references.

Description


The Madynes research team at INRIA Lorraine has reported some vulnerabilities in Cisco IP Phone 7940 and 7960, which can be exploited by malicious people to cause a DoS (Denial of Service).

The vulnerabilities are caused due to errors within the handling of certain SIP message sequences. These can be exploited to reboot the device by sending a series of specially crafted SIP messages.

The vulnerabilities are reported in firmware version POS3-08-6-00.


Solution:
Update to firmware version 8.7(0).

Further details available to Secunia VIM customers

Provided and/or discovered by:
Madynes research team at INRIA Lorraine

Original Advisory:
http://lists.grok.org.uk/pipermail/full-disclosure/2007-August/065401.html
http://lists.grok.org.uk/pipermail/full-disclosure/2007-August/065402.html

Cisco:
http://www.cisco.com/en/US/products/products_security_response09186a00808a6693.html

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: Cisco IP Phone 7940/7960 SIP Message Sequence Denial of Service

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