Kentico CMS 5.5R2.23 Cross Site Scripting

Risk: Low
Local: No
Remote: Yes

Kentico CMS <=5.5R2.23 Cross-Site Scripting POST Injection Vulnerability Vendor: Kentico Software Product web page: Affected version: 5.5R2.23 and bellow Summary: .NET Web Content Management System for ASP.NET Desc: Kentico CMS suffers from a XSS vulnerability when parsing user input to the 'userContextMenu_parameter' parameter via POST method in '/examples/webparts/membership/users-viewer.aspx'. Attackers can exploit this weakness to execute arbitrary HTML and script code in a user's browser session. Tested on: Microsoft Windows XP Pro SP3 (EN) Microsoft-IIS/7.5 ASP.NET 2.0.50727 Vulnerability discovered by Gjoko 'LiquidWorm' Krstic liquidworm gmail com Vendor timeline: 12.03.2011 - Vulnerability discovered. 21.05.2011 - Vendor contacted with sent PoC files. 23.05.2011 - Vendor replies. 23.05.2011 - Asked vendor for confirmation. 24.05.2011 - Vendor confirms issue scheduling hotfix 5.5R2.24. 31.05.2011 - Coordinated public security advisory released. Advisory ID: ZSL-2011-5015 Advisory URL: Vendor Advisory: 12.03.2011 --- POST http://localhost/examples/webparts/membership/users-viewer.aspx HTTP/1.1 &userContextMenu_parameter=%22%20onmouseover%3Dalert%281%29%20zsl%3D%22


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