Cisco CSS Web management interface invalid HTTP request denial of service

cisco-css-http-dos (9083) The risk level is classified as MediumMedium Risk


Cisco Content Services Switch (CSS) 11000 series switches are vulnerable to a denial of service attack, caused by improper handling of HTTP requests to the Web management interface. A remote attacker could send a malformed HTTP POST request or XML data to the Web management interface to cause the device to reboot. An attacker can use this vulnerability to deny services to legitimate users.


Denial of Service


Upgrade to the latest version of Cisco WebNS Software for your device, as listed in Cisco Security Advisory: Content Service Switch HTTP Processing Vulnerabilities dated 2002 May 15 18:00 GMT. See References.


  • Cisco Systems Inc. Security Advisory, 2002 May 15 18:00 GMT: Content Service Switch HTTP Processing Vulnerabilities.
  • BID-4747: Cisco Content Service Switch HTTPS Post Denial Of Service Vulnerability
  • BID-4748: Cisco Content Service Switch XML Denial Of Service Vulnerability
  • CVE-2002-0792: The web management interface for Cisco Content Service Switch (CSS) 11000 switches allows remote attackers to cause a denial of service (soft reset) via (1) an HTTPS POST request, or (2) malformed XML data.
  • OSVDB ID: 8854: Cisco CSS 11000 Web Interface HTTPS POST DoS
  • OSVDB ID: 8855: Cisco CSS 11000 Web Interface Malformed XML Data DoS
  • US-CERT VU#330275: Cisco Content Service Switch reboots when HTTPS POST request is sent to web management interface
  • US-CERT VU#686939: Cisco Content Service Switch performs soft reset when XML data is sent to web management interface

Platforms Affected:

  • Cisco Content Services Switch 11050
  • Cisco Content Services Switch 11150
  • Cisco Content Services Switch 11500
  • Cisco Content Services Switch 11800
  • Cisco WebNS 4.0_1.053s
  • Cisco WebNS 5.0_0.038s
  • Cisco WebNS 5.0_1.012s
  • Cisco WebNS 5.0_2.005s
  • Cisco WebNS 5.1_0.0.10


May 15, 2002

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 the author/distributor (IBM Internet Security Systems X-Force) 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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