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|A ''Cross Site Scripting'' (XSS) vulnerabilty has been identified in Struts by [http://www.hacktics.com/ Hacktics.com]. For further information, see...||A ''Cross Site Scripting'' (XSS) vulnerabilty has been identified in Struts by [[http://www.hacktics.com/|Hacktics.com]]. For further information, see...|
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| * [http://en.wikipedia.org/wiki/XSS Wikipedia] - What is ''Cross Site Scripting''?
* [http://www.hacktics.com/AdvStrutsNov05.html Hacktics.com Advisory] - Details of the threat to Struts
| * [[http://en.wikipedia.org/wiki/XSS|Wikipedia]] - What is ''Cross Site Scripting''?
* [[http://www.hacktics.com/AdvStrutsNov05.html|Hacktics.com Advisory]] - Details of the threat to Struts
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|* Upgrade to [http://struts.apache.org/struts-doc-1.2.8/userGuide/release-notes.html Struts 1.2.8]||* Upgrade to [[http://struts.apache.org/struts-doc-1.2.8/userGuide/release-notes.html|Struts 1.2.8]]|
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| * [http://struts.apache.org/struts-doc-1.2.8/userGuide/release-notes.html Struts 1.2.8 Release Notes]
* [http://wiki.apache.org/struts/StrutsUpgrade Notes on Upgrading]
* Download latest Struts [http://struts.apache.org/acquiring.html here]
| * [[http://struts.apache.org/struts-doc-1.2.8/userGuide/release-notes.html|Struts 1.2.8 Release Notes]]
* [[http://wiki.apache.org/struts/StrutsUpgrade|Notes on Upgrading]]
* Download latest Struts [[http://struts.apache.org/acquiring.html|here]]
Struts XSS Vulnerability
A Cross Site Scripting (XSS) vulnerabilty has been identified in Struts by Hacktics.com. For further information, see...
The following GA quality versions of Struts are vulnerable:
- Struts 1.0.x
- Struts 1.1
- Struts 1.2.4
- Struts 1.2.7
N.B. i.e. Struts 1.2.8 and Struts 1.3.x do NOT have this vulnerability.
There are three possible courses of action users can take to guard against this vulnerability:
Configure an unknown Struts Action (Struts Version 1.1 onwards)
Upgrade to Struts 1.2.8
Configure your Servlet Container to use a Custom Error Page for 404 / Not Found errors
3.1 Configure an '''unknown''' Struts Action
From Struts 1.1 onwards it is possible to configure one action in the struts-config.xml for mappings which are Not Found. This action should be configure to forward to a custom error page (which doesn't include the Request's path!).
To do this you specify the unknown attribute on ONE of your action mappings and forward to a custom error page, for example...
<struts-config> <action-mappings> <action forward="/CustomNotFoundError.jsp" unknown="true" /> </action-mappings> </struts-config>
Ralph Hauser reports that the above "doesn't validate with the 1.2 DTD". I tried it in the struts-examples webapp for Struts 1.2.7 and it worked fine for me - niallp. However, if the above doesn't work, then add a "path" element to the action mapping:
<struts-config> <action-mappings> <action path="/unknown" forward="/CustomNotFoundError.jsp" unknown="true" /> </action-mappings> </struts-config>
3.2 Upgrading to Struts 1.2.8
Struts has been modified to remove this vulnerability in Struts 1.2.8. For further information on Struts 1.2.8, see:
3.3 Configure Servlet Container to use a '''Custom Error Page'''
Check your servlet container's documentation to see if you can configure a custom error page for 404 / Not Found status.