Stored cross-site scripting in Bitrix Site Manager - #VU6142
Published: March 21, 2017
Vulnerability details
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 "/bitrix/admin/adv_contract_edit.php" script. A remote attacker with access to "Advertising and banners" module can create a contract with specially crafted name and permanently store HTML and JavaScript code in database. The code will be executed in another user's browser in context of vulnerable website the the affected contract is viewed.
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.