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Fix #13245: XSS issues with search.php parameters
Net.Edit0r (Net.Edit0r@Att.net) from BlACK Hat Group [http://black-hg.org] posted a vulnerability report for an XSS issue in search.php for MantisBT 1.2.6. The full report is available at http://packetstormsecurity.org/files/104149 filter_api.php is the culprit for this vulnerability as it passes user supplied search parameters back into output without first escaping the values. It should be noted that numerous other XSS vulnerabilities (all related) have been fixed with this patch. In other words, it is not just the project_id parameter to search.php that was affected - it was numerous other parameters/fields as well. The second SQL injection vulnerability identified by Net.Edit0r is invalid because the only time we ever make reference to "mbadmin" in the source code is: core.php: if ( file_exists( 'mantis_offline.php' ) && !isset( $_GET['mbadmin'] ) ) This usage is safe because nothing is ever done with $_GET['mbadmin']. It may be the case that the user's customised version of mantis_offline.php was incorrectly dumping the value of $_GET['mbadmin'] to the screen. The default/sample mantis_offline.php has been checked and does not print any dynamically created strings/user supplied values.
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