OpenEMR 4.1.1 (site param) Remote XSS Vulnerability Vendor: OpenEMR Product web page: http://www.open-emr.org Affected version: 4.1.1 Summary: OpenEMR is a Free and Open Source electronic health records and medical practice management application that can run on Windows, Linux, Mac OS X, and many other platforms. Desc: OpenEMR suffers from a XSS issue due to a failure to properly sanitize user-supplied input to the 'site' GET parameter in the central 'globals.php' script which is called by every script. Attackers can exploit this weakness to execute arbitrary HTML and script code in a user's browser session. Tested on: Microsoft Windows 7 Ultimate SP1 (EN) Apache 2.4.2 (Win32) PHP 5.4.4 MySQL 5.5.25a Vulnerability discovered by Gjoko 'LiquidWorm' Krstic @zeroscience Advisory ID: ZSL-2013-5129 Advisory URL: http://www.zeroscience.mk/en/vulnerabilities/ZSL-2013-5129.php Vendor: http://www.open-emr.org/wiki/index.php/OpenEMR_Patches 09.02.2013 -- http://localhost/openemr/[DIR]/[SCRIPT]?site="><script>alert(1);</script>