full-disclosure - Corsaire Security Advisory: BEA WebLogic example InteractiveQuery.jsp XSS issue

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Message-ID: <00a201c39fa7$b1fe8c70$496480c1@vegetab1e.org>
From: advisories at corsaire.com (advisories)
Subject: Corsaire Security Advisory: BEA WebLogic example InteractiveQuery.jsp
 XSS issue

-- Corsaire Security Advisory --

Title: BEA WebLogic example InteractiveQuery.jsp XSS issue
Date: 04.07.03
Application: BEA WebLogic 8.1 and prior
Environment: Various
Author: Martin O'Neal [martin.oneal@...saire.com]
Audience: General distribution
Reference: c030704-008

-- Scope --

The aim of this document is to clearly define a vulnerability in the BEA 
WebLogic InteractiveQuery.jsp example application, as supplied by BEA 
Systems, Inc [1], that would allow an attacker to perform a Cross Site 
Scripting (XSS) attack.

-- History --

Vendor notified: 04.07.03 
Document released: 31.10.03

-- Overview --

The BEA WebLogic InteractiveQuery.jsp example application can be passed 
HTML constructs within arguments. This makes it possible to achieve an 
XSS attack, potentially giving access to confidential information, such 
as session cookies etc.

-- Analysis --

The BEA WebLogic InteractiveQuery.jsp example application is a CGI 
application that demonstrates the use of arguments to query a database. 
One of the start-up arguments that it accepts is a name of a person.  
This argument does not appear to be tested for formatting and if an 
invalid value is passed to the application, the value is simply repeated 
back in a results page. 

By using a carefully constructed value, mobile code such as JAVA, can be 
executed within the users context. This style of attack can be used to 
gain access to sensitive information, such as session cookies etc.

-- Proof of concept --

This proof of concept is known to work with a default BEA WebLogic 
example installation on a Windows platform. To make it work within 
different environments, you may need to alter the path used in the URL 
appropriately.

To replicate this issue, initiate a connection to the server that is 
hosting the WebLogic application, then use the following URL. 

   http://host/examplesWebApp/InteractiveQuery.jsp?
   person=<script>alert('XSS')</script>

This should result in a new page, accompanied by a popup script dialog 
containing the message "XSS".

-- Recommendations --

Example applications should never be installed within a production 
environment. 

Read and follow the advice contained within the BEA supplied advisory on 
dealing with XSS issues [2].

The application should be reviewed in line with security best practises, 
such as those recommended by the OWASP project [3], with special 
consideration paid to the validation of input and output fields.

When providing example applications for use by developers, vendors 
should uphold the strictest compliance with security best practises, as 
it is common for such examples to be used as templates for real-world 
projects. By providing flawed examples, vendors are perpetuating poor 
development practise.

-- CVE --

The Common Vulnerabilities and Exposures (CVE) project has assigned
the name CAN-2003-0624 to this issue. This is a candidate for
inclusion in the CVE list (http://cve.mitre.org), which standardizes
names for security problems.

-- References --

[1] http://www.bea.com
[2] http://dev2dev.bea.com/resourcelibrary/advisoriesnotifications/
    SA_BEA03_36.00.jsp
[3] http://www.owasp.org

-- Revision --

a. Initial release.
b. Included reference for vendor advisory.

-- Distribution --

This security advisory may be freely distributed, provided that it 
remains unaltered and in its original form. 

-- Disclaimer --

The information contained within this advisory is supplied "as-is" with 
no warranties or guarantees of fitness of use or otherwise. Corsaire 
accepts no responsibility for any damage caused by the use or misuse of 
this information.

Copyright 2003 Corsaire Limited. All rights reserved. 

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