CVE-2024-56284: SSL Wireless SMS Notification SQLi Flaw

CVE-2024-56284 Overview

CVE-2024-56284 is a SQL Injection vulnerability affecting the SSL Wireless SMS Notification plugin for WordPress, developed by sslplugins. This vulnerability arises from improper neutralization of special elements used in SQL commands (CWE-89), allowing attackers to inject malicious SQL queries through unsanitized input fields. The vulnerability impacts all versions of the plugin from n/a through version 3.5.0.

SQL Injection vulnerabilities in WordPress plugins are particularly dangerous as they can allow unauthorized database access, data exfiltration, and in some cases, complete site compromise through escalated privileges or stored procedures.

Critical Impact

Attackers can exploit this SQL Injection vulnerability to bypass authentication mechanisms, extract sensitive database contents including user credentials and personal information, modify or delete data, and potentially achieve remote code execution on vulnerable WordPress installations.

Affected Products

• SSL Wireless SMS Notification WordPress Plugin versions through 3.5.0
• WordPress installations using the ssl-wireless-sms-notification plugin

Discovery Timeline

• 2025-01-07 - CVE-2024-56284 published to NVD
• 2026-04-01 - Last updated in NVD database

Technical Details for CVE-2024-56284

Vulnerability Analysis

This SQL Injection vulnerability exists due to the plugin's failure to properly sanitize user-supplied input before incorporating it into SQL queries. When user input containing SQL metacharacters is passed directly to database queries without proper escaping or parameterization, an attacker can alter the query's logic to perform unauthorized database operations.

WordPress plugins that handle SMS notifications typically interact with the database to store phone numbers, message templates, notification preferences, and delivery logs. Any of these data entry points could potentially serve as injection vectors if input validation is inadequate.

The impact of successful exploitation includes unauthorized access to the WordPress database, potential extraction of sensitive user data including email addresses and hashed passwords, modification of site content or user privileges, and in worst-case scenarios, server compromise through database features like INTO OUTFILE or user-defined functions.

Root Cause

The root cause of CVE-2024-56284 is the direct inclusion of unsanitized user input in SQL query construction. Instead of using WordPress's prepared statements via the $wpdb->prepare() method or other parameterized query mechanisms, the vulnerable code concatenates user input directly into SQL strings. This allows attackers to break out of the intended query context and inject arbitrary SQL commands.

WordPress provides robust database abstraction through the $wpdb class, which offers the prepare() method specifically designed to prevent SQL injection by properly escaping parameters. The vulnerable plugin failed to utilize these security mechanisms consistently across all database interactions.

Attack Vector

The attack vector involves sending crafted HTTP requests to the WordPress site with malicious SQL payloads embedded in parameters processed by the SSL Wireless SMS Notification plugin. An attacker would identify injectable parameters through reconnaissance, then craft payloads designed to extract data, bypass authentication, or manipulate database content.

Common SQL injection techniques applicable to this vulnerability include:

• Union-based injection: Appending UNION SELECT statements to extract data from other tables
• Boolean-based blind injection: Inferring database contents through true/false query responses
• Time-based blind injection: Using conditional delays to extract information character by character
• Error-based injection: Leveraging database error messages to reveal query structure and data

For detailed technical information about this vulnerability, see the Patchstack Vulnerability Report.

Detection Methods for CVE-2024-56284

Indicators of Compromise

• Unusual database queries in WordPress debug logs containing SQL syntax like UNION SELECT, OR 1=1, or comment sequences (--, /**/)
• Unexpected access patterns to the SSL Wireless SMS Notification plugin endpoints
• Database error messages appearing in application logs referencing SQL syntax errors
• Signs of data exfiltration or unauthorized database modifications
• Web server access logs showing requests with URL-encoded SQL characters to plugin endpoints

Detection Strategies

• Deploy Web Application Firewall (WAF) rules to detect and block common SQL injection patterns in HTTP parameters
• Implement database activity monitoring to alert on suspicious query patterns or unauthorized data access
• Configure WordPress logging plugins to capture and analyze requests to plugin endpoints
• Use vulnerability scanning tools to identify the vulnerable plugin version in your WordPress installation
• Enable SentinelOne's application control features to monitor for suspicious WordPress plugin behavior

Monitoring Recommendations

• Regularly audit installed WordPress plugins and their versions against known vulnerability databases
• Monitor database logs for unusual query patterns, especially those containing SQL keywords in string contexts
• Implement integrity monitoring on critical WordPress database tables to detect unauthorized modifications
• Configure alerts for failed authentication attempts that may indicate exploitation attempts
• Review web server access logs for requests containing suspicious character sequences targeting plugin URLs

How to Mitigate CVE-2024-56284

Immediate Actions Required

• Audit your WordPress installation to determine if the SSL Wireless SMS Notification plugin version 3.5.0 or earlier is installed
• If the vulnerable version is present, disable the plugin immediately until a patched version is available
• Review database logs and access logs for signs of exploitation
• Consider implementing temporary WAF rules to block requests to the vulnerable plugin endpoints
• Backup your WordPress database before making any changes

Patch Information

Check the Patchstack Vulnerability Report for the latest patch availability and update information. Update the SSL Wireless SMS Notification plugin to a version newer than 3.5.0 once a security fix is released by the vendor.

Workarounds

• Disable the SSL Wireless SMS Notification plugin until a patch is available if the functionality is not critical
• Implement a Web Application Firewall (WAF) with SQL injection detection rules to filter malicious requests
• Restrict access to WordPress admin and plugin endpoints using IP allowlisting where feasible
• Use database user accounts with minimal privileges required for WordPress operation to limit exploitation impact
• Consider alternative SMS notification plugins that have been recently audited for security

# WordPress CLI commands to check and deactivate the vulnerable plugin
# Check if the vulnerable plugin is installed
wp plugin list --status=active | grep ssl-wireless-sms-notification

# Deactivate the vulnerable plugin
wp plugin deactivate ssl-wireless-sms-notification

# Verify plugin status
wp plugin status ssl-wireless-sms-notification