CVE-2024-2804: Network Summary Plugin SQLi Vulnerability

CVE-2024-2804 Overview

The Network Summary plugin for WordPress contains a critical SQL Injection vulnerability in the category parameter affecting all versions up to and including 2.0.11. Due to insufficient escaping on user-supplied input and a lack of proper preparation on existing SQL queries, unauthenticated attackers can append malicious SQL queries to extract sensitive information from the WordPress database.

Critical Impact

Unauthenticated attackers can exploit this SQL Injection vulnerability to extract sensitive data from the WordPress database, potentially compromising user credentials, personal information, and other confidential data stored within the application.

Affected Products

• Network Summary plugin for WordPress versions up to and including 2.0.11

Discovery Timeline

• 2024-04-09 - CVE-2024-2804 published to NVD
• 2024-11-21 - Last updated in NVD database

Technical Details for CVE-2024-2804

Vulnerability Analysis

This SQL Injection vulnerability resides in the Network Summary WordPress plugin's handling of the category parameter. The vulnerable code is located in class-network-summary.php at line 225. When user input is passed through the category parameter, the plugin fails to properly sanitize or escape the value before incorporating it into database queries. This creates a classic SQL Injection attack surface where malicious actors can manipulate database queries to perform unauthorized actions.

The vulnerability is particularly severe because it does not require any authentication to exploit. An unauthenticated remote attacker can craft malicious requests containing SQL injection payloads in the category parameter, allowing them to extract sensitive information from the database including user credentials, personal data, and potentially WordPress configuration details.

Root Cause

The root cause of this vulnerability is twofold:

1. Insufficient input escaping: The plugin does not properly escape user-supplied input in the category parameter before using it in SQL queries.

2. Lack of prepared statements: The existing SQL query construction does not utilize WordPress's prepared statement functionality ($wpdb->prepare()), which would parameterize user input and prevent SQL injection attacks.

This combination of missing input validation and improper query construction creates a direct path for attackers to inject arbitrary SQL code into database queries.

Attack Vector

The attack is conducted over the network and requires no authentication or user interaction. An attacker can exploit this vulnerability by:

1. Identifying a WordPress site running the vulnerable Network Summary plugin
2. Crafting a malicious HTTP request with SQL injection payloads in the category parameter
3. Sending the request to the vulnerable endpoint
4. Extracting sensitive data from the database response or through time-based/blind SQL injection techniques

The vulnerability allows attackers to append additional SQL queries to existing queries, enabling data extraction through UNION-based attacks, error-based extraction, or blind SQL injection techniques depending on the database configuration and error handling.

Detection Methods for CVE-2024-2804

Indicators of Compromise

• Suspicious requests to WordPress endpoints containing SQL injection patterns in the category parameter
• Database logs showing unexpected or malformed queries originating from the Network Summary plugin
• Unusual database read patterns or data extraction attempts
• Web application firewall logs indicating SQL injection attempts targeting category-related parameters

Detection Strategies

• Deploy web application firewall (WAF) rules to detect SQL injection patterns in HTTP parameters, particularly targeting the category parameter
• Monitor WordPress access logs for requests containing SQL metacharacters such as single quotes, UNION statements, and comment sequences
• Implement database activity monitoring to detect anomalous query patterns and unauthorized data access attempts
• Use intrusion detection systems with signatures for common SQL injection payloads

Monitoring Recommendations

• Enable detailed WordPress access logging and review logs for suspicious parameter values
• Configure database audit logging to capture and alert on unusual query patterns
• Set up real-time alerting for SQL injection pattern matches in web traffic
• Monitor for data exfiltration indicators such as unusually large database responses

How to Mitigate CVE-2024-2804

Immediate Actions Required

• Update the Network Summary plugin to a patched version (if available) or remove the plugin entirely from your WordPress installation
• Implement web application firewall rules to block SQL injection attempts targeting the category parameter
• Review database access logs for any signs of exploitation prior to patching
• Consider rotating database credentials if exploitation is suspected
• Perform a security audit of the WordPress database for unauthorized modifications or data extraction

Patch Information

Consult the Wordfence vulnerability report for the latest patch status and remediation guidance. The vulnerable code can be reviewed in the WordPress Plugin Source Code.

Workarounds

• Disable or remove the Network Summary plugin until a patched version is available
• Implement input validation at the web server or WAF level to reject requests with SQL injection patterns
• Restrict access to the affected plugin functionality through WordPress access controls or server-level rules
• Use a security plugin that provides virtual patching capabilities for known WordPress vulnerabilities

# Example WAF rule to block SQL injection in category parameter (ModSecurity)
SecRule ARGS:category "@detectSQLi" "id:20242804,phase:2,deny,status:403,msg:'Potential SQL Injection in category parameter - CVE-2024-2804'"