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Secunia Advisory SA26547

Cisco IP Phone 7940/7960 SIP Message Sequence Denial of Service
Secunia Advisory SA26547
Secunia VIM 4.0 - Free Trial
Release Date 2007-08-21
Last Update 2007-08-22
   
Popularity 19,846 views
Comments 0 comments

Criticality level Less criticalLess critical
Impact DoS
Where From remote
Authentication level This information is available to Secunia VIM customers
   
Report reliability This information is available to Secunia VIM customers
Solution Status Vendor Patch
   
   
3rd party PoC/exploit Link available in Customer Area
Systems affected This information is available to Secunia VIM customers
Approve distribution This information is available to Secunia VIM customers
   
Software:
Cisco IP Phone 7940
Cisco IP Phones 7960
Secunia CVSS Score This information is available to Secunia VIM Customers
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

Changelog
Further details available to Secunia VIM customers

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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