CVE-2024-6808: Simple Task List SQL Injection Vulnerability

CVE-2024-6808 Overview

A critical SQL Injection vulnerability has been discovered in itsourcecode Simple Task List version 1.0. The vulnerability exists in the insertUserRecord function within the signUp.php file, where improper handling of the username argument allows attackers to inject malicious SQL commands. This is a remotely exploitable vulnerability that could enable unauthorized access to the application's database, potentially leading to data theft, modification, or complete database compromise.

Critical Impact

Attackers can exploit this SQL Injection vulnerability remotely without authentication to extract sensitive data, modify database contents, or potentially gain control over the underlying database server.

Affected Products

• Code-projects Simple Task List 1.0
• Applications using the vulnerable signUp.php component
• Systems running the itsourcecode Simple Task List application

Discovery Timeline

• 2024-07-17 - CVE-2024-6808 published to NVD
• 2024-11-21 - Last updated in NVD database

Technical Details for CVE-2024-6808

Vulnerability Analysis

This SQL Injection vulnerability (CWE-89) affects the user registration functionality of Simple Task List 1.0. The insertUserRecord function in signUp.php fails to properly sanitize or parameterize the username input before incorporating it into SQL queries. This allows attackers to craft malicious input that breaks out of the intended SQL statement and executes arbitrary database commands.

The vulnerability is network-accessible with low attack complexity, requiring no authentication or user interaction to exploit. While classified as medium severity, the potential impact spans confidentiality, integrity, and availability of the application's data.

Root Cause

The root cause of this vulnerability is the direct concatenation of user-supplied input (the username parameter) into SQL queries without proper input validation, sanitization, or the use of parameterized queries (prepared statements). The insertUserRecord function accepts user input and constructs SQL statements dynamically, creating an injection point that attackers can exploit.

Attack Vector

The attack is initiated remotely via network requests to the signUp.php endpoint. An attacker can manipulate the username parameter during the signup process to inject SQL commands. Since the vulnerability requires no authentication and no user interaction, any network-accessible instance of Simple Task List 1.0 is at risk.

The exploitation methodology involves sending specially crafted HTTP requests to the signup functionality with malicious SQL payloads embedded in the username field. This could allow attackers to bypass authentication, enumerate database contents, extract sensitive information, or modify/delete data. Technical details and proof-of-concept information can be found in the GitHub Issue for CVE and the VulDB entry.

Detection Methods for CVE-2024-6808

Indicators of Compromise

• Unusual or malformed entries in user registration logs containing SQL syntax characters such as single quotes, semicolons, or UNION keywords
• Error messages in application logs indicating SQL syntax errors during signup operations
• Unexpected database queries or data modifications associated with the user registration functionality
• Network traffic containing SQL injection patterns targeting the signUp.php endpoint

Detection Strategies

• Deploy Web Application Firewalls (WAF) with SQL injection detection rules specifically monitoring the signup endpoint
• Implement application-level logging for the insertUserRecord function to capture input validation failures
• Use database activity monitoring to detect anomalous queries originating from the web application
• Enable intrusion detection systems with signatures for common SQL injection attack patterns

Monitoring Recommendations

• Monitor HTTP request logs for signUp.php requests containing suspicious characters in the username parameter
• Set up alerts for database error messages related to SQL syntax in the user registration workflow
• Implement rate limiting on the signup endpoint to slow potential automated exploitation attempts
• Review database audit logs for unexpected data access patterns or privilege escalation attempts

How to Mitigate CVE-2024-6808

Immediate Actions Required

• If possible, take the Simple Task List application offline until a patch is available or mitigations are implemented
• Implement a Web Application Firewall (WAF) rule to filter SQL injection patterns on the signUp.php endpoint
• Apply strict input validation on the username field, allowing only alphanumeric characters
• Review database access logs for evidence of exploitation and investigate any suspicious activity

Patch Information

As of the last update on 2024-11-21, no official vendor patch has been released for this vulnerability. Organizations using Simple Task List 1.0 should monitor the vendor's official channels for security updates. In the absence of an official patch, implementing the workarounds below and code-level fixes using prepared statements is strongly recommended.

For additional technical details, refer to the VulDB CTI entry.

Workarounds

• Implement prepared statements with parameterized queries in the insertUserRecord function to prevent SQL injection
• Apply input validation to restrict the username field to expected character sets (alphanumeric only)
• Deploy a WAF with SQL injection protection rules specifically for the signup functionality
• Restrict network access to the application using firewall rules to limit exposure while awaiting a patch

# Example: Basic input sanitization using prepared statements (PHP)
# Replace direct query concatenation with parameterized queries
# Consult your application framework documentation for proper implementation

# WAF rule example for ModSecurity to block SQL injection attempts:
# SecRule ARGS:username "@detectSQLi" "id:1001,phase:2,deny,status:403,msg:'SQL Injection Blocked'"