CVE-2023-6520: WP 2FA – Two-factor authentication for WordPress <= 2.5.0 - Cross-Site Request Forgery
The WP 2FA – Two-factor authentication for WordPress plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 2.5.0. This is due to missing or incorrect nonce validation on the sendbackupcodesemail function. This makes it possible for unauthenticated attackers to send emails with arbitrary content to registered users via a forged request granted they can trick a site administrator or other registered user into performing an action such as clicking on a link. While a nonce check is present, it is only executed if a nonce is set. By omitting a nonce from the request, the check can be bypassed.
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Frequently Asked Questions
What is the severity of CVE-2023-6520?
CVE-2023-6520 is classified as a moderate severity vulnerability due to its potential for Cross-Site Request Forgery.
How do I fix CVE-2023-6520?
To fix CVE-2023-6520, update the WP 2FA plugin to version 2.6.0 or later.
What versions are affected by CVE-2023-6520?
CVE-2023-6520 affects all versions of the WP 2FA plugin up to and including 2.5.0.
What does the CVE-2023-6520 vulnerability allow?
CVE-2023-6520 allows for unauthenticated users to potentially exploit the system through Cross-Site Request Forgery.
Is CVE-2023-6520 related to nonce validation?
Yes, CVE-2023-6520 is caused by missing or incorrect nonce validation in the send_backup_codes_email function.