This bug can be exploited by an attacker to hijack user credentials by sending them a request to a board, post or comment on a blog or forum that the user belongs to. Since WordPress sites allow users to register new posts and comments through a login, an attacker can simply craft a fake login request to obtain access to the WordPress site and perform an action through the site that the administrator hasn’t authorized. This bug can be mitigated by implementing a hardening rule in your server’s configuration to block any cross-site request forgery attempts. All you have to do is add the following line to your server’s access configuration:deny = your server block here> And that’s it!
CVE-2023-38455
This bug was exploitable by an attacker to perform a cross-site request forgery on the administrator’s site and perform authorization actions through it. This vulnerability can be mitigated by implementing a hardening rule in your server’s access configuration to block any unauthorized cross-site request forgery attempts, like this:deny = your server block here>
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How to prevent Cross-Site Request Forgery in WordPress
The easiest way to prevent Cross-Site Request Forgery attacks is to implement a hardening rule in your server’s access configuration. If you can, it’s always better to implement full server hardening rules that take into account the entirety of your website and its access configuration. These rules will help you mitigate all potential vulnerabilities on your WordPress website.
To do this, open up your WAF Rule Manager and add the following rule:
Block any cross-site request forgery attempts: DENY = your server block here>
The WordPress Core Team Confirms the Vulnerability
This bug was confirmed by the WordPress Core Team in their latest release. To mitigate this issue, make sure that you update your WordPress site to the current version. You can update your WordPress installation manually or download a fresh installer from https://wordpress.org/download/.
Timeline
Published on: 09/23/2022 19:15:00 UTC
Last modified on: 09/26/2022 15:18:00 UTC