Brute Force Protection Bypass in Limit Login Attempts Reloaded Plugin for WordPress
CVE-2020-35590

9.8CRITICAL

Key Information:

Vendor

Wordpress
Status
Limit Login Attempts Reloaded
Vendor
CVE Published:
21 December 2020

Badges

👾 Exploit Exists🟡 Public PoC🟣 EPSS 42%

What is CVE-2020-35590?

The Limit Login Attempts Reloaded plugin for WordPress prior to version 2.17.4 is susceptible to a vulnerability that allows attackers to bypass rate limiting protections. By manipulating the X-Forwarded-For header, a malicious entity can forge the client source IP address, thereby evading brute force attack mitigation measures. This misconfiguration permits an attacker to attempt an infinite number of login attempts without triggering the expected rate limit restrictions, posing a significant risk to WordPress sites using this plugin.

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Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2020-35590
Created by N4nj0

References

https://n4nj0.github.io/advisories/wordpress-plugin-limit...
x_refsource_MISC
https://wordpress.org/plugins/limit-login-attempts-reload...
x_refsource_MISC

EPSS Score

42% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

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