Defender Security <= 2.4.6 - Cross-Site Request Forgery Bypass

4.3
Cross-Site Request Forgery (CSRF)
CVE CVE-2021-4425
CVSS 4.3 (Medium)
Publicly Published March 1, 2021
Last Updated January 22, 2024
Researcher Jerome Bruandet - NinTechNet

Description

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 verify_otp_login_time() 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.

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Vulnerability Details for Defender Security – Malware Scanner, Login Security & Firewall

Software Type Plugin
Software Slug defender-security (view on wordpress.org)
Patched? Yes
Remediation Update to version 2.4.6.1, or a newer patched version
Affected Version
  • <= 2.4.6
Patched Version
  • 2.4.6.1

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