Cross-Site Scripting (XSS) in Duplicator WordPress Plugin

High-Tech Bridge Security Research Lab discovered XSS vulnerability in Duplicator WordPress plugin, which can be exploited to perform cross-site scripting attacks against vulnerable application.

1. Cross-Site Scripting (XSS) in Duplicator WordPress Plugin: CVE-2013-4625
   The vulnerability exists due to insufficient filtration of user-supplied data in “package” HTTP GET parameter passed to “/wp-content/plugins/duplicator/files/installer.cleanup.php” script. A remote attacker can trick a logged-in administrator to open a specially crafted link and execute arbitrary HTML and script code in browser in context of the vulnerable website.
   The exploitation example below uses the “alert()” JavaScript function to display administrator’s cookies:
   http://[host]/wp-content/plugins/duplicator/files/installer.cleanup.php?remo ve=1&package=%3Cscript%3Ealert%28document.cookie%29;%3C/script%3E