WordPress Front End Upload v0.5.4.4 Arbitrary PHP File Upload Vulnerability

vendor:

Front End Upload

by:

Chris Kellum

7,5

CVSS

HIGH

Arbitrary PHP File Upload

434

CWE

Product Name: Front End Upload

Affected Version From: 0.5.4.4

Affected Version To: 0.5.4.5

Patch Exists: YES

Related CWE: N/A

CPE: N/A

Metasploit: N/A

Other Scripts: N/A

Tags: N/A

CVSS Metrics: N/A

Nuclei References: N/A

Nuclei Metadata: N/A

Platforms Tested: WordPress

2012

WordPress Front End Upload v0.5.4.4 Arbitrary PHP File Upload Vulnerability

Plugin does not properly filter filetypes, which allows for the upload of filetypes in the following format: filename.php.jpg. Vulnerable hosts will serve such files as a php file, allowing for malicious files to be uploaded and executed. In creating the uploads folder for this plugin, the code utilizes uniqid to add a unique string to the upload folder name in order to better hide it from direct access. However, many WordPress installations allow direct access to the /wp-content/uploads/ folder, so simply look for a folder name beginning with 'feu_' to locate your upload.

Mitigation:

Ensure that the plugin is updated to the latest version (0.5.4.6) and that the uploads folder is not accessible from the web.

Source

Exploit-DB raw data:

# Exploit Title: WordPress Front End Upload v0.5.4.4 Arbitrary PHP File Upload Vulnerability
# Date: 7/23/12
# Exploit Author: Chris Kellum
# Vendor Homepage: http://mondaybynoon.com/
# Software Link: http://downloads.wordpress.org/plugin/front-end-upload.0.5.4.4.zip
# Version: 0.5.4.4



=====================
Vulnerability Details
=====================

Plugin does not properly filter filetypes, which allows for the upload of filetypes in the following format:

     filename.php.jpg

Vulnerable hosts will serve such files as a php file, allowing for malicious files to be uploaded and executed.

In creating the uploads folder for this plugin, the code utilizes uniqid to add a unique string to the upload folder name in order to better hide it from direct access.

Example:

     /wp-content/uploads/feu_9fc12558ac71e6995808cfc590207e87/

However, many WordPress installations allow direct access to the /wp-content/uploads/ folder, so simply look for a folder name beginning with 'feu_' to locate your upload.

===================
Disclosure Timeline
===================

7/13/2012 - Vendor notified
7/23/2012 - Version 0.5.4.6 released
7/23/2012 - Public disclosure