Multiple vulnerabilities have been discovered in Support Incident Tracker, which can be exploited by malicious users to conduct SQL injection attacks and compromise a vulnerable system and by malicious people to conduct cross-site scripting attacks, cross-site request forgery attacks, and script insertion attacks.
1) Input passed via the "sites" parameter to billable_incidents.php is not properly sanitised before being used in SQL queries. This can be exploited to manipulate SQL queries by injecting arbitrary SQL code.
2) Input passed via the "search_string" parameter to search.php is not properly sanitised before being used in SQL queries. This can be exploited to manipulate SQL queries by injecting arbitrary SQL code.
3) The application's web interface allows users to perform certain actions via HTTP requests without performing any validity checks to verify the requests. This can be exploited to e.g. delete a user group or user by tricking a logged in administrator into visiting a malicious web site.
4) Input passed via e.g. "origref", "linkref", or "linktype" to link_add.php and "id" parameter to index.php is not properly sanitised in the "clean_int()" function in lib/base.inc.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.
5) Input passed via e.g. "redirect" to link_add.php (when "action" is set to "addlink") is not properly sanitised in the "html_redirect()" function in lib/html.inc.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.
6) Input passed via uploaded file names to incident_attachments.php is not properly sanitised before being used. This can be exploited to insert arbitrary HTML and script code, which will be executed in a user's browser session in context of an affected site when the malicious data is being viewed.
7) An error in the incident_attachments.php script does not properly validate uploaded files and can be exploited to execute arbitrary PHP code by uploading a PHP file.
NOTE: This vulnerability can be exploited in combination with vulnerability #1 in SA45453.
The vulnerabilities are confirmed in version 3.65. Other versions may also be affected.
Solution: Edit the source code to ensure that input is properly sanitised. Do not browse untrusted websites or follow untrusted links while logged in to the application. Restrict access to the incident_attachments.php script (e.g. via .htaccess).
Provided and/or discovered by: 1-2) Yuri Goltsev, Positive Research Lab.
3-7) An anonymous person via US-CERT.
Original Advisory: SecurityLab:
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Subject: Support Incident Tracker Multiple Vulnerabilities
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