CVE-2021-4425: Defender Security <= 2.4.6 - Cross-Site Request Forgery Bypass

Published Jul 12, 2023
·
Updated

The Defender Security plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 2.4.6. This is due to missing or incorrect nonce validation on the verifyotplogintime() function. This makes it possible for unauthenticated attackers to verify a one time login via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

Affected Software

1 affected component
wpmudev Defender Security Wordpress<=2.4.6

Remediation

Patch Available

https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=2473684%40defender-security&new=2473684%40defender-security&sfp_email=&sfph_mail=

Patch Available

https://www.wordfence.com/threat-intel/vulnerabilities/id/e772fbbe-33d5-46fa-a041-ab07d3f9318f?source=cve

Event History

Jul 12, 2023
CVE Published
via MITRE·07:21 AM
Data Sourced
via MITRE·07:21 AM
DescriptionSeverityWeakness
Data Sourced
via NVD·08:15 AM
RemedyDescriptionSeverityWeaknessAffected Software
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Frequently Asked Questions

1

What is CVE-2021-4425?

CVE-2021-4425 is a vulnerability in the Defender Security plugin for WordPress that allows unauthenticated attackers to verify a one-time login.

2

How severe is CVE-2021-4425?

The severity of CVE-2021-4425 is medium with a CVSS score of 4.3.

3

How does CVE-2021-4425 affect the Defender Security plugin for WordPress?

CVE-2021-4425 affects versions up to and including 2.4.6 of the Defender Security plugin for WordPress.

4

What is Cross-Site Request Forgery (CSRF)?

Cross-Site Request Forgery (CSRF) is an attack that tricks the victim into submitting a malicious request, which can lead to unintended actions or data exposure.

5

How can I fix CVE-2021-4425?

To fix CVE-2021-4425, update the Defender Security plugin for WordPress to a version higher than 2.4.6.

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
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