Limit Login Attempts Reloaded, CVE-2020-35590

CVE, Research URL: CVE-2020-35590
Home page URL: Security reports for Limit Login Attempts Reloaded
Application: Limit Login Attempts Reloaded
Published on: Dec 21, 2020
Research Description: LimitLoginAttempts.php in the limit-login-attempts-reloaded plugin before 2.17.4 for WordPress allows a bypass of (per IP address) rate limits because the X-Forwarded-For header can be forged. When the plugin is configured to accept an arbitrary header for the client source IP address, a malicious user is not limited to perform a brute force attack, because the client IP header accepts any arbitrary string. When randomizing the header input, the login count does not ever reach the maximum allowed retries.
Affected versions: max 2.17.4.
Status: vulnerable