WeBid 1.0.2 – Persistent Cross-Site Scripting (via SQL Injection)
# Exploit Title: presistent XSS through SQLi WeBid 1.0.2 # Google Dork: "powered by WeBid" # Date: 15-06-2011 # Author: Saif El-Sherei # Software Link: http://sourceforge.net/projects/simpleauction/ # Version: 1.0.2 # Tested on: Firefox 4, XAMPP Info: Open source php/mysql fully featured auction script. Perfect for those who want to start their own auction site. Details: an attacker could inject malicous HTML/JS through a SQL injection flow in the adsearch.php. the SQl injection flaw exist in the "maxprice" field (see POC I). the SQL injection attack cannot be elevated, so we leverage the SQL injection to trigger an error that would write our malicious HTML/JS to the error log. the XSS attack happens when the admin or any user capable of viewing the error log from the ACP. POC I (SQL injection): '0') ----> this will trigger the error '0') OR (1)=(1 ------> will not trigger error POC II (XSS through SQLi): '0') <script>alert('XSS');</script> Time Line: 15-06-2011 Vulnerability discovered 15-06-2011 Vendor notified 17-06-2011 No response from vendor, public disclosure Regards, Saif el-Sherei OSCP |