Cisco Unified IP Phone HTTP server denial of service

cisco-unifiedipphone-httpserver-dos (40489)

Medium Risk

Description:

Cisco Unified IP Phones running SCCP firmware are vulnerable to a denial of service, caused by an error in the HTTP server. By sending a specially-crafted HTTP request to TCP port 80, a remote attacker could reboot the phone.

*CVSS:

Base Score:	7.8
Access Vector:	Network
Access Complexity:	Low
Authentication:	None
Confidentiality Impact:	None
Integrity Impact:	None
Availability Impact:	Complete
Temporal Score:	5.8
Exploitability:	Unproven
Remediation Level:	Official-Fix
Report Confidence:	Confirmed

Consequences:

Denial of Service

Remedy:

Refer to cisco-sa-20080213-phone for patch, upgrade or suggested workaround information. See References.

References:

• cisco-sa-20080213-phone: Cisco Security Advisory: Cisco Unified IP Phone Overflow and Denial of Service Vulnerabilities.
• BID-27774: Cisco Unified IP Phone SCCP and SIP Protocol Multiple Remote Vulnerabilities
• CVE-2008-0527: The HTTP server in Cisco Unified IP Phone 7935 and 7936 running SCCP firmware allows remote attackers to cause a denial of service (reboot) via a crafted HTTP request.
• SA28935: Cisco Unified IP Phone Multiple Vulnerabilities
• SECTRACK ID: 1019408: Cisco Unified IP Phone Can Be Crashed By Remote Users Sending an HTTP Request Packet
• VUPEN/ADV-2008-0543: Cisco Unified IP Phones Overflow and Denial of Service Vulnerabilities

Platforms Affected:

• Cisco Unified IP Phone 7935
• Cisco Unified IP Phone 7936

Reported:

Feb 13, 2008

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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

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