CVE-2023-24731
📋 TL;DR
CVE-2023-24731 is a SQL injection vulnerability in Simple Customer Relationship Management System v1.0 that allows attackers to execute arbitrary SQL commands via the query parameter in the user profile update function. This affects all users running the vulnerable version of this PHP-based CRM system.
💻 Affected Systems
- Simple Customer Relationship Management System
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise including data theft, data manipulation, authentication bypass, and potential remote code execution if database functions allow it.
Likely Case
Unauthorized access to sensitive customer data, modification of CRM records, and potential privilege escalation.
If Mitigated
Limited impact with proper input validation and parameterized queries preventing SQL injection.
🎯 Exploit Status
Exploit requires authentication to access user profile update function; SQL injection is straightforward once authenticated.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not available
Vendor Advisory: Not available
Restart Required: No
Instructions:
No official patch available. Implement parameterized queries in the user profile update function and validate all user inputs.
🔧 Temporary Workarounds
Input Validation and Sanitization
allImplement strict input validation and sanitization for all query parameters before database interaction.
Modify PHP code to use prepared statements: $stmt = $conn->prepare('UPDATE users SET name = ? WHERE id = ?'); $stmt->bind_param('si', $name, $id);
Web Application Firewall (WAF)
allDeploy WAF rules to detect and block SQL injection attempts.
Configure WAF with SQL injection detection rules (OWASP ModSecurity CRS rules 942xxx series)
🧯 If You Can't Patch
- Isolate the CRM system in a segmented network with strict access controls.
- Implement database-level protections: use least privilege accounts, enable database auditing, and restrict database functions.
🔍 How to Verify
Check if Vulnerable:
Test the user profile update function with SQL injection payloads in the query parameter (e.g., ' OR '1'='1).Check Version:
Check the software version in the application's admin panel or configuration files.Verify Fix Applied:
Verify that parameterized queries are implemented and SQL injection payloads no longer execute.📡 Detection & Monitoring
Log Indicators:
- Unusual database queries from web application logs
- SQL syntax errors in application logs
- Multiple failed login attempts followed by profile updates
Network Indicators:
- HTTP POST requests to profile update endpoint containing SQL keywords (UNION, SELECT, INSERT, etc.)
SIEM Query:
source="web_logs" AND (url_path="/profile_update.php" OR url_path="/user/update") AND (request_body CONTAINS "UNION" OR request_body CONTAINS "SELECT" OR request_body CONTAINS "INSERT")🔗 References
- https://github.com/rahulpatwari/CVE/blob/main/CVE-2023-24731/CVE-2023-24731.txt
- https://www.sourcecodester.com/php/15895/simple-customer-relationship-management-crm-system-using-php-free-source-coude.html
- https://www.sourcecodester.com/sites/default/files/download/oretnom23/php-scrm.zip
- https://github.com/rahulpatwari/CVE/blob/main/CVE-2023-24731/CVE-2023-24731.txt
- https://www.sourcecodester.com/php/15895/simple-customer-relationship-management-crm-system-using-php-free-source-coude.html
- https://www.sourcecodester.com/sites/default/files/download/oretnom23/php-scrm.zip
