IBM Web Traffic Express (WTE) /cgi-bin/helpout.exe denial of service

ibm-wte-helpout-dos (10452) The risk level is classified as MediumMedium Risk


IBM Web Traffic Express (WTE) is vulnerable to a denial of service attack. If a remote attacker sends a specially-crafted HTTP request to the /cgi-bin/helpout.exe file, the attacker would cause the proxy server (ibmproxy.exe) to crash.


Denial of Service


For IBM Web Traffic Express 4.x:
Apply efix build or later, available from the IBM FTP site. Refer to Rapid 7, Inc. Security Advisory R7-0007 for more information. See References.

For IBM Web Traffic Express 3.6:
Contact IBM Technical Support for information on obtaining an upgrade or patch. See References.


  • IBM Web site: WebSphere Edge Server - Product Overview - IBM Software.
  • IBM Web site: IBM Support & downloads - United States.
  • Rapid 7, Inc. Security Advisory R7-0007: IBM WebSphere Edge Server Caching Proxy Denial of Service.
  • BID-6002: IBM Websphere Caching Proxy Denial Of Service Vulnerability
  • CVE-2002-1169: IBM Web Traffic Express Caching Proxy Server 3.6 and 4.x before allows remote attackers to cause a denial of service (crash) via an HTTP request to helpout.exe with a missing HTTP version number, which causes ibmproxy.exe to crash.
  • OSVDB ID: 2090: IBM WebSphere Caching Proxy DoS

Platforms Affected:

  • IBM WebSphere Caching Proxy Server 3.6
  • IBM WebSphere Caching Proxy Server 4.0


Oct 23, 2002

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