Hash: SHA1

             AUSCERT External Security Bulletin Redistribution

        Cross Site Scripting vulnerability when using Smart Refresh
                              5 January 2012


        AusCERT Security Bulletin Summary

Product:           IBM Web Experience Factory
Publisher:         IBM
Operating System:  Windows 7
                   Windows Server 2003
                   Windows Server 2008
                   Windows Server 2008 R2
                   Windows Vista
                   Windows XP
Impact/Access:     Cross-site Scripting -- Remote with User Interaction
Resolution:        Mitigation
CVE Names:         CVE-2011-5048  

Original Bulletin: 

- --------------------------BEGIN INCLUDED TEXT--------------------

Cross Site Scripting vulnerability when using Smart Refresh

Flash (Alert)


This flash describes a scenario that can cause cross site scripting issues when
using smart refresh.


When using Smart Refresh with input values containing a <script> tag. WEF has
code that protects against the execution of the script when displaying text,
but the Dojo code that adds content to a page (used by smart refresh) pulls all
the <script> tags out from anywhere in the content and executes it.
For example if you enter in the following in a text input or a textarea, then
hit submit, and then go back to the edit page you will see the alert execute.
<script type="text/javascript" >alert("attack")</script>

In order to protect against the potential of cross site scripting,
applications should always be developed with validation for all input form
values. Validation should reject values containing special characters such as
< and > to prevent these values from flowing into the application.

As a fail-safe measure test fixes have been released (one for 7.0.0.x and
another for 7.0.1.x) that automatically encode < and > to prevent Dojo from
identifying form inputs as scripts. Customers can apply the appropriate test
fix, but the recommended approach is still to have models explicitly validate
all form inputs rather than relying upon the fail-safe.

Related information

WEF LO65985
WPF LO65984

- --------------------------END INCLUDED TEXT--------------------

You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.

NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members.  As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. 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.

NOTE: This is only the original release of the security bulletin.  It may
not be updated when updates to the original are made.  If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.

Contact information for the authors of the original document is included
in the Security Bulletin above.  If you have any questions or need further
information, please contact them directly.

Previous advisories and external security bulletins can be retrieved from:


Australian Computer Emergency Response Team
The University of Queensland
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.
Comment: http://www.auscert.org.au/render.html?it=1967