XD100098.txt
Posted on 11 December 2006
Orkut Group Cross Site Scripting Vulnerability ##################################################################### XDisclose Advisory : XD100098 Vulnerability Discovered: November 08th 2006 Advisory Released : December 11th 2006 Credit : Rajesh Sethumadhavan Class : Cross Site Scripting HTML Injection Severity : Medium Solution Status : Unpatched Vendor : Google Inc Vendor Website : http://www.orkut.com Affected applications : Orkut Services Affected Platform : All ##################################################################### Overview: Orkut is an Internet social network service run by Google with more than 37 million total members and nearly 1.3 million daily visitors. It claims to be designed to help users meet new friends and maintain existing relationships with pictures and messages, and establish new ones by reaching out to people you've never met before. Orkut service is vulnerable to Cross-Site Scripting and HTML Injection. This is caused due to improper validation of user-supplied inputs. Description: A remote attacker can craft a GET request with the XSS payload as demonstrated below. When the victim access the mailcious URL payload will get executed which result in stealing of cookie, IP info, refer info, browser information, clipboard content, operating system info, hardware Info, modification of page or html injection, url redirection, port scanning of the network, and even phishing is possible. 1)Orkut Invite XSS: The flaws are due to improper sanitization of inputs passed to 'show' parameter in GET request ------------------------------------------------------------------- http://www.orkut.com/Friends.aspx?show=group1);alert(document.cookie ------------------------------------------------------------------ Demonstration: Note: Demonstration leads to your personal information disclosure - Login to your orkut account - Paste the above URL - Click on 'delete group' & 'ok' button - Orkut Cookies will get displayed The similar way HTML injection is also possible. Vulnerable Code: ------------------------------------------------------------------ < a href="javascript:handleDeleteGroup('', 1);alert(document.cookie);"> ------------------------------------------------------------------ Solution: Orkut can improve their filters by disallowing certain characters like " <>/?&`~!@#$%^*()[]|;:"' " in user input URL. Screenshot: http://xdisclose/images/xdorkutgroupxss.jpg Impact: Successful exploitation allows execution of arbitrary script code in a user
