MainWP Child Reports <= 2.2 - Cross-Site Request Forgery to Arbitrary Options Update

Vulnerability Description

The MainWP Child Reports plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 2.2. This is due to missing or incorrect nonce validation on the network_options_action() function. This makes it possible for unauthenticated attackers to update arbitrary options that can be leveraged for privilege escalation via a forged request granted they can trick a site administrator into performing an action such as clicking on a link. This is only exploitable on multisite instances.

References

• https://www.wordfence.com/threat-intel/vulnerabilities/id/cdd7971c-6f1c-437a-832c-e2b2817a197e?source=cve
• https://plugins.trac.wordpress.org/browser/mainwp-child-reports/trunk/classes/class-network.php#L346
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3131718%40mainwp-child-reports&new=3131718%40mainwp-child-reports&sfp_email=&sfph_mail=#file4