chillyCMS 1.3.0 Shell Upload / Access Bypass

[Praetorian503]

chillyCMS version 1.3.0 suffers from URL restriction bypass and remote shell upload vulnerabilities.

# Exploit Title: chillyCMS 1.3.0 Multiple Vulnerabilities
# Google Dork: "powered by chillyCMS"
# Date: 15 February 2013
# Exploit Author: Abhi M Balakrishnan
# Vendor Homepage: http://chillycms.bplaced.net/
# Software Link: http://chillycms.bplaced.net/chillyCMS/media/files/chillyCMS_full.zip
# Version: 1.3.0
# Tested on: uWAMP 2.1 (PHP 5.2.17, MySQL 5.5.9), Windows 8
# Video: http://www.youtube.com/watch?v=6B3rND9S75g


# Vulnerability
  Failure to Restrict URL Access
  chillyCMS uses 302 redirects to restrict access to the unautorized pages.

# Exploit
    Step 1: Create a rule in No-Redirect Add-on: ^http://localhost/chillyCMS/
    Step 2: Access http://localhost/chillyCMS/admin/


# Vulnerability
  Arbitrary File Upload
  chillyCMS/admin/design.site.php page extracts all uploaded ZIP files to chillyCMS/tmp directory

# Exploit
    Step 1: Create a ZIP file of the files to be uploaded. Example: Compress shell.php to get shell.zip
    Step 2: Upload shell.zip
  Step 3: Access the shell at http://localhost/chillyCMS/tmp/shell.php

# History
  11 March 2012 - Discovered vulnerability and exploit, contacted the vendor.
  12 March 2012 - Vendor responds back, exchanges few mails.
  15 November 2012 - Vendor discontinues further development.
  15 February 2013 - Published the vulnerabilities and exploits to the public.

# How to reproduce
  The latest download from the website was not working on fresh install. An earlier version (1.1.3) has been installed and all the PHP files, except config.php, have been replaced with new files.

Source: PacketStorm