Cisco IP Phone invalid StreamingStatistics request denial of service
| cisco-ipphone-streamingstatistics-dos (9142) |  Low Risk |
Description:
Cisco IP Phone models 7910, 7940, and 7960 are vulnerable to a denial of service attack, caused by the improper validation of user-supplied input passed to the Web interface. A remote attacker could send a specially-crafted URL request to the StreamStatistics script for an invalid stream ID of more than 32768 to cause the IP Phone to reboot. This would cause any existing connections to be lost and cause the IP Phone to become unavailable for a short period of time.
Platforms Affected:
- Cisco, VoIP Phone CP-7910 3.0
- Cisco, VoIP Phone CP-7910 3.1
- Cisco, VoIP Phone CP-7910 3.2
- Cisco, VoIP Phone CP-7940 3.0
- Cisco, VoIP Phone CP-7940 3.1
- Cisco, VoIP Phone CP-7940 3.2
- Cisco, VoIP Phone CP-7960 3.0
- Cisco, VoIP Phone CP-7960 3.1
- Cisco, VoIP Phone CP-7960 3.2
Remedy:
Upgrade to the lastest Cisco IP Phone Firmware version, as listed in Cisco Security Advisory: Multiple Vulnerabilities in Cisco IP Telephones. See References.
Consequences:
Denial of Service
References:
- BugTraq Mailing List, Wed May 22 2002 - 10:50:50 CDT, Multiple Vulnerabilities in CISCO VoIP Phones at http://archives.neohapsis.com/archives/bugtraq/2002-05/0200.html.
- Cisco Systems Inc. Security Advisory, 2002 May 22 16:00 GMT, Multiple Vulnerabilities in Cisco IP Telephones at http://www.cisco.com/warp/public/707/multiple-ip-phone-vulnerabilities-pub.shtml.
- BID-4794: Cisco VoIP Phone Stream Request Denial Of Service Vulnerability
- BID-4798: Cisco VoIP Phone Web Interface System Memory Contents Information Leakage Vulnerability
- CVE-2002-0882: The web server for Cisco IP Phone (VoIP) models 7910, 7940, and 7960 allows remote attackers to cause a denial of service (reset) and possibly read sensitive memory via a large integer value in (1) the stream ID of the StreamingStatistics script, or (2) the port ID of the PortInformation script.
Reported:
May 22, 2002
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