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AA-2009.0098                  AUSCERT Advisory

                             [Win][UNIX/Linux]
                     DotNetNuke: Cross-site Scripting
                               17 April 2009
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        AusCERT Advisory Summary
        ------------------------

Product:              DotNetNuke
Operating System:     UNIX variants (UNIX, Linux, OSX)
                      Windows
Impact:               Cross-site Scripting
Access:               Remote/Unauthenticated
Member content until: Friday, May 15 2009

OVERVIEW:

       A security vulnerability has been corrected in DotNetNuke.


IMPACT:

       The vendor has provided the following information regarding this
       vulnerability:

       "To support paypal IPN functionality, DotNetNuke posts information 
       to and receives status information from the paypal webservice. To do 
       this it uses a name/value pair as part of the request, which is 
       echoed to the form action attribute to ensure that any actions post 
       to the correct page.
       ...
       It was possible to amend the name/value pairs and inject html/script 
       which could allow hackers to perform cross-site scripting attacks."
       [1]


MITIGATION:

       This vulnerability has been corrected in DotNetNuke 4.9.3.


REFERENCES:

       [1] HTML/Script Code Injection Vulnerability 
           http://www.dotnetnuke.com/News/SecurityPolicy/Securitybulletinno25/tabid/1260/Default.aspx

AusCERT has made every effort to ensure that the information contained
in this document is accurate.  However, the decision to use the information
described is the responsibility of each user or organisation. The decision to
follow or act on information or advice contained in this security bulletin is
the responsibility of each user or organisation, and should be considered in
accordance with your organisation's site policies and procedures. AusCERT
takes no responsibility for consequences which may arise from following or
acting on information or advice contained in this security bulletin.

If you believe that your computer system has been compromised or attacked in 
any way, we encourage you to let us know by completing the secure National IT 
Incident Reporting Form at:

        http://www.auscert.org.au/render.html?it=3192

===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
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