Information
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Advisory by Netsparker (now Invicti)
Name:  XSS Vulnerabilities in ImpressCMS Content Module
Software:  ImpressCMS 1.3.4 Final and possibly below.
Vendor Homepage:  http://www.impresscms.org
Vulnerability Type:  Cross-Site Scripting
Severity:  Medium
Researcher:  Omar Kurt
Advisory Reference:  NS-13-004

Description
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ImpressCMS is a community-developed Content Management System. With this tool maintaining the content of a website becomes as easy as writing a word document. ImpressCMS is the ideal tool for a wide range of users: from business to community users, from large enterprises to people who want a simple, easy-to-use blogging tool.

Details
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ImpressCMS Content Module is affected by XSS vulnerabilities in version 1.3.4 Final.

  • http://example.com/modules/content/index.php/%22%3E%3Cscript%3Ealert%289%29%3C/script%3E

You can read the full article about Cross-Site Scripting (XSS) from here :

Solution
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The vendor said that vulnerability does not exist in the current version of the module.

Advisory Timeline
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27/02/2013 - First contact
04/03/2013 - Sent the details
28/06/2013 - Second contact
24/07/2013 - Vendor replied that vulnerability does not exist in the current version
25/07/2013 - Advisory released

Credits
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It has been discovered on testing of Invicti Web Application Security Scanner.

References
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Vendor Url / Patch : http://community.impresscms.org/modules/smartsection/item.php?itemid=649 
MSL Advisory Link : /xss-vulnerabilities-in-impress-cms-content-module/
Invicti Advisories : /web-applications-advisories/

About Invicti
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Invicti Security is transforming the way web applications are secured. Invicti empowers organizations in every industry to scale their overall security operations, make the best use of their security resources, and engage developers in helping to improve their overall security posture.