Description
The Essential Blocks plugin for WordPress is vulnerable to unauthorized use of functionality due to a missing capability check on the save function in versions up to, and including, 4.0.6. This makes it possible for subscriber-level attackers to save plugin settings. While a nonce check is present, it is only executed when a nonce is provided. Not providing a nonce results in the nonce verification to be skipped. There is no capability check.
CVSS breakdown
CVSS 3.1
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None
Affected products
References
- MISChttps://www.wordfence.com/threat-intel/vulnerabilities/id/f8bf0933-1c97-4374-b323-c55b91fe4d27?source=cve
- MISChttps://plugins.trac.wordpress.org/browser/essential-blocks/tags/4.0.6/includes/Admin/Admin.php
- MISChttps://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=2900595%40essential-blocks%2Ftrunk&old=2900029%40essential-blocks%2Ftrunk&sfp_email=&sfph_mail=#file2