WolfCMS 0.8.3.1 Open Redirect

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# Exploit Title: WolfCMS 0.8.3.1 Open Redirection Vulnerability  
# Google Dork: N/A  
# Date: 04-04-2018  
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# Exploit Author: Sureshbabu Narvaneni#  
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# Author Blog : http://nullnews.in  
# Vendor Homepage: http://www.wolfcms.org  
# Software Link: https://bitbucket.org/wolfcms/wolf-cms-downloads/downloads/wolfcms-0.8.3.1.zip  
# Affected Version: 0.8.3.1  
# Category: WebApps  
# Tested on: Win7 Enterprise x86/Kali Linux 4.12 i686  
# CVE : CVE-2018-8813  
#  
# 1. Vendor Description:  
#  
# Light-weight, fast, simple and powerful CMS. PHP-based, easily extended CMS. Uses MySQL, SQLite or (from 0.7)  
# PostgreSQL for db. Simple drag & drop page hierarchy. Open source, licensed under GPLv3.  
#  
# 2. Technical Description:  
#  
# Open redirect vulnerability in the login[redirect] parameter login  
functionality in WolfCMS before 0.8.3.1 allows  
# remote attackers to redirect users to arbitrary web sites and conduct  
phishing attacks via a malformed URL.  
#  
# 3. Proof Of Concept:  
#  
# Navigate to http://[URL]/wolfcms/?/admin/login  
# Enter the credentials and replace login[redirect] to any url.  
# You can see the unvalidated redirect.  
#  
# 4. Solution:  
#  
# Upgrade to latest release.  
# http://www.wolfcms.org/blog.html  
#  
# 5. Reference:  
# https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-8813  
# https://github.com/wolfcms/wolfcms/issues/670  
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