Stored cross-site scripting in Support Board - Chat And Help Desk - CVE-2018-18373
Published: October 17, 2018 / Updated: September 4, 2019
Support Board - Chat And Help Desk
Detailed vulnerability description
The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.
The vulnerability exists due to insufficient sanitization of user-supplied data in file upload areas in the Chat and Help Desk sections via the "msg" in the "/wp-admin/admin-ajax.php", when action is set to "sb_ajax_add_message". A remote attacker can store the XSS payload in the database, trick the victim to visit a compromised page and execute arbitrary HTML and script code in user's browser in context of vulnerable website.
Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.