The Advanced Country Blocker plugin for WordPress is vulnerable to Authorization Bypass in all versions up to, and including, 2.3.1 due to the use of a predictable default value for the secret bypass key created during installation without requiring users to change it. This makes it possible for unauthenticated attackers to bypass the geolocation blocking mechanism by appending the key to any URL on sites where the administrator has not changed the default value.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
None
No data leak
Integrity
Low
Partial data modification
Availability
None
No disruption
CVSS Vector v3.1
Weakness Type (CWE)
References 4
https://plugins.trac.wordpress.org/browser/advanced-country-blocker/tags/2.3.1/…
security@wordfence.com
https://plugins.trac.wordpress.org/browser/advanced-country-blocker/tags/2.3.1/…
security@wordfence.com
https://plugins.trac.wordpress.org/browser/advanced-country-blocker/tags/2.3.1/…
security@wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/30747988-83f9-41f9-9b…
security@wordfence.com