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WordPress Users To CSV 1.4.5 Cross Site Request Forgery

WordPress Users To CSV 1.4.5 Cross Site Request Forgery
Posted Jun 15, 2015
Authored by Nitin Venkatesh

WordPress Users to CSV plugin version 1.4.5 suffers from a cross site request forgery vulnerability.

tags | exploit, csrf
MD5 | 97a9bb272039cc48df287e63830e83a7

WordPress Users To CSV 1.4.5 Cross Site Request Forgery

Change Mirror Download
# Title: Cross-Site Request Forgery Vulnerability in Users to CSV Wordpress
Plugin v1.4.5
# Submitter: Nitin Venkatesh
# Product: Users to CSV Wordpress Plugin
# Product URL: https://wordpress.org/plugins/users-to-csv/ (disabled)
# Plugin SVN URL: https://plugins.svn.wordpress.org/users-to-csv/ (active)
# Vulnerability Type: Cross-site Request Forgery [CWE-352]
# Affected Versions: v1.4.5 and possibly below.
# Tested versions: v1.4.5
# Fixed Version: None. Support for the plugin has been deceased.
# CVE Status: None/Unassigned/Fresh

## Product Information:

This plugin adds an admin screen under "Users", giving two options:
exporting the current users to a csv file and exporting the unique
commenters on your blog to a csv file.

## Vulnerability Description:

User information can be exported via a GET request to users.php via CSRF.

## Proof of Concept:

http://localhost/wp-admin/users.php?page=users2csv.php&csv=true&table=users
http://localhost/wp-admin/users.php?page=users2csv.php&csv=true&table=comments

## Solution:

Disable the plugin. Support has been ceased.

## Disclosure Timeline:

2015-06-08 - Discovered. Contacted developer.
2015-06-08 - Developer responds that support for plugin has ceased.
2015-06-13 - Noticed plugin site has been disabled. It must’ve happened
somewhere between 2015-06-09 and 2015-06-13. Contacted developer for
re-confirmation.
2015-06-14 - Developer gives go-ahead for publishing a disclosure.
2015-06-15 - Publishing disclosure on Full Disclosure mailing list.

## Disclaimer:

This disclosure is purely meant for educational purposes. I will in no way
be responsible as to how the information in this disclosure is used.


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