Multiple vulnerabilities have been discovered in the XCloner plugin for WordPress, which can be exploited by malicious people to conduct cross-site scripting attacks and disclose sensitive information.
1) Input passed via the "mosmsg" parameter to wp-content/plugins/xcloner-backup-and-restore/admin.cloner.php is not properly sanitised in wp-content/plugins/xcloner-backup-and-restore/admin.cloner.html.php before being returned to the user. This can be exploited to execute arbitrary HTML and script code in a user's browser session in context of an affected site.
2) Input passed via the "option" parameter to wp-content/plugins/xcloner-backup-and-restore/admin.cloner.php (when "task" is set to "dologin") is not properly sanitised in wp-content/plugins/xcloner-backup-and-restore/cloner.functions.php before being returned to the user. This can be exploited to execute arbitrary HTML and script code in a user's browser session in context of an affected site.
Successful exploitation of this vulnerability requires that "register_globals" is enabled.
3) Input passed via the "config" parameter to wp-content/plugins/xcloner-backup-and-restore/cloner.cron.php is not properly verified before being used to include files. This can be exploited to include arbitrary files from local resources via directory traversal attacks.
The vulnerabilities are confirmed in version 2.2.1. Other versions may also be affected.
Solution: Upgrade to version 3.0.4.
Provided and/or discovered by: mr_me
Original Advisory: XCloner:
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