CVE-2024-54234: Limit Login Attempts WordPress SQLi Flaw

CVE-2024-54234 Overview

CVE-2024-54234 is an SQL Injection vulnerability in the wp-buy Limit Login Attempts WordPress plugin (wp-limit-failed-login-attempts). The vulnerability exists due to improper neutralization of special elements used in SQL commands, allowing attackers to inject malicious SQL statements into the application. This issue affects all versions of the Limit Login Attempts plugin through version 5.5.

Critical Impact

Attackers can exploit this SQL Injection vulnerability to potentially extract sensitive data from the WordPress database, modify or delete database contents, bypass authentication mechanisms, or gain unauthorized administrative access to the WordPress installation.

Affected Products

• WordPress Limit Login Attempts plugin (wp-limit-failed-login-attempts) version 5.5 and earlier
• WordPress sites using the vulnerable wp-buy Limit Login Attempts plugin

Discovery Timeline

• 2024-12-13 - CVE-2024-54234 published to NVD
• 2026-04-01 - Last updated in NVD database

Technical Details for CVE-2024-54234

Vulnerability Analysis

This vulnerability is classified as CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection'). The Limit Login Attempts plugin fails to properly sanitize user-supplied input before incorporating it into SQL queries executed against the WordPress database.

SQL Injection vulnerabilities in WordPress plugins are particularly dangerous because they can provide direct access to the underlying database, which contains sensitive information including user credentials, personal data, and configuration settings. In the context of a login attempt limiting plugin, the vulnerability may be exploitable through login-related input fields or parameters that track failed authentication attempts.

Root Cause

The root cause of this vulnerability is insufficient input validation and the lack of parameterized queries or prepared statements in the plugin's database operations. When user-controlled input is directly concatenated into SQL queries without proper escaping or sanitization, attackers can manipulate the query structure to execute arbitrary SQL commands.

Attack Vector

The attack vector for this SQL Injection vulnerability involves supplying specially crafted input to the vulnerable plugin. An attacker could exploit this flaw by manipulating parameters that the plugin processes during login attempt tracking or administrative functions.

The exploitation typically involves injecting SQL syntax that modifies the intended query behavior. For example, an attacker might inject payloads designed to:

• Extract database table contents using UNION-based injection
• Bypass authentication checks through boolean-based blind injection
• Exfiltrate data via time-based blind injection techniques
• Execute administrative database operations

Additional technical details can be found in the Patchstack WordPress Vulnerability Report.

Detection Methods for CVE-2024-54234

Indicators of Compromise

• Unusual or malformed entries in web server access logs containing SQL syntax characters such as single quotes, double dashes, UNION statements, or encoded SQL keywords
• Unexpected database query errors in WordPress debug logs
• Anomalous database activity patterns including bulk data retrieval or unauthorized table access
• Suspicious login attempt records with malformed username or IP address fields

Detection Strategies

• Deploy Web Application Firewall (WAF) rules to detect and block SQL injection patterns in HTTP requests
• Monitor database query logs for anomalous queries originating from the WordPress application
• Implement intrusion detection rules that alert on common SQL injection payloads targeting WordPress plugins
• Review WordPress error logs for database-related exceptions that may indicate exploitation attempts

Monitoring Recommendations

• Enable comprehensive logging for database queries and web server access
• Configure alerting for failed SQL query executions and database errors
• Monitor for unusual data exfiltration patterns or database performance anomalies
• Implement file integrity monitoring for WordPress plugin files to detect unauthorized modifications

How to Mitigate CVE-2024-54234

Immediate Actions Required

• Update the Limit Login Attempts plugin to the latest patched version immediately
• If no patch is available, consider temporarily disabling the wp-limit-failed-login-attempts plugin until a fix is released
• Review WordPress database logs for evidence of exploitation
• Implement a Web Application Firewall with SQL injection protection rules
• Audit all WordPress plugins for similar SQL injection vulnerabilities

Patch Information

Administrators should check for available updates to the Limit Login Attempts plugin through the WordPress plugin repository or the vendor's website. Apply any security patches released after version 5.5 that address this SQL injection vulnerability. For detailed patch information, consult the Patchstack WordPress Vulnerability Report.

Workarounds

• Temporarily disable the vulnerable wp-limit-failed-login-attempts plugin if an immediate patch is not available
• Deploy a Web Application Firewall (WAF) with SQL injection protection to filter malicious requests
• Restrict administrative access to trusted IP addresses using .htaccess or server-level firewall rules
• Consider using an alternative login limiting plugin that has been audited for security vulnerabilities
• Implement database user privilege restrictions to limit the potential impact of SQL injection attacks

# WordPress plugin deactivation via WP-CLI
wp plugin deactivate wp-limit-failed-login-attempts

# Verify plugin is disabled
wp plugin list --status=inactive | grep wp-limit-failed-login-attempts