CVE-2024-36840: Boelter Blue System SQL Injection Flaw

CVE-2024-36840 Overview

CVE-2024-36840 is a SQL Injection vulnerability affecting Boelter Blue System Management version 1.3. This vulnerability allows remote attackers to execute arbitrary code and obtain sensitive information by exploiting improper input validation in multiple PHP parameters. The vulnerable endpoints include the id parameter in news_details.php and location_details.php, as well as the section parameter in services.php.

Critical Impact

Unauthenticated remote attackers can extract sensitive database contents and potentially execute arbitrary commands on the underlying server through SQL injection attacks on multiple vulnerable endpoints.

Affected Products

• Boelter Blue System Management v1.3

Discovery Timeline

• 2024-06-12 - CVE-2024-36840 published to NVD
• 2024-11-21 - Last updated in NVD database

Technical Details for CVE-2024-36840

Vulnerability Analysis

This SQL Injection vulnerability (CWE-89) exists due to improper neutralization of special elements used in SQL commands. The application fails to adequately sanitize user-supplied input before incorporating it into SQL queries, creating multiple injection points across the web application.

The vulnerability is network-accessible and requires no authentication or user interaction to exploit. An attacker can leverage these injection points to manipulate database queries, potentially leading to unauthorized data disclosure, data modification, or in certain configurations, command execution on the database server.

The high EPSS score of 12.531% (93.92 percentile) indicates significant likelihood of exploitation in the wild, making this vulnerability a priority for remediation.

Root Cause

The root cause of CVE-2024-36840 is the lack of proper input validation and parameterized queries in the PHP application code. The vulnerable endpoints directly concatenate user-supplied input into SQL statements without sanitization, allowing attackers to inject malicious SQL syntax through the id and section parameters.

Attack Vector

The attack can be executed remotely over the network by submitting crafted HTTP requests to the vulnerable PHP endpoints. The three identified vulnerable entry points are:

• news_details.php - exploitable via the id parameter
• location_details.php - exploitable via the id parameter
• services.php - exploitable via the section parameter

An attacker can inject SQL payloads through these parameters to extract database contents, bypass authentication mechanisms, or potentially escalate to operating system command execution depending on the database configuration and privileges. The vulnerability requires no authentication, making it particularly dangerous for internet-facing installations.

For detailed technical exploitation information, refer to the Packet Storm Security Advisory or the CyberDepot vulnerability writeup.

Detection Methods for CVE-2024-36840

Indicators of Compromise

• Unusual database queries or errors in web server logs associated with news_details.php, location_details.php, or services.php
• HTTP requests containing SQL syntax characters (single quotes, UNION SELECT statements, comment sequences) in the id or section parameters
• Database logs showing unauthorized SELECT, INSERT, UPDATE, or DELETE operations
• Unexpected outbound connections from the database server indicating potential data exfiltration

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect SQL injection patterns targeting the vulnerable parameters
• Deploy intrusion detection signatures for common SQL injection attack patterns in HTTP traffic
• Monitor application logs for error messages indicating SQL syntax errors or database exceptions
• Enable database query logging and alert on suspicious query patterns or unauthorized data access

Monitoring Recommendations

• Review web server access logs for requests to news_details.php, location_details.php, and services.php with anomalous parameter values
• Configure SIEM alerts for SQL injection attack patterns detected by network security tools
• Monitor database audit logs for unusual query volume or access to sensitive tables
• Implement file integrity monitoring on the Boelter Blue System Management application files

How to Mitigate CVE-2024-36840

Immediate Actions Required

• Restrict network access to the affected Boelter Blue System Management installation to trusted IP addresses only
• Implement WAF rules to block SQL injection payloads targeting the id and section parameters
• Review database logs for evidence of prior exploitation and assess potential data compromise
• Consider temporarily disabling the vulnerable endpoints (news_details.php, location_details.php, services.php) until a fix is applied

Patch Information

No official vendor patch information was available at the time of this analysis. Organizations should contact Boelter Blue directly for remediation guidance or consider implementing the workarounds below. Monitor the VulDB entry and Full Disclosure mailing list for updates on official fixes.

Workarounds

• Deploy a Web Application Firewall (WAF) with SQL injection protection rules in front of the application
• Apply input validation at the web server level using mod_security or similar technologies to filter malicious input
• Restrict database user privileges to minimum required permissions to limit potential damage from successful exploitation
• Isolate the application server and database on a segmented network to contain potential compromise

# Example mod_security rule to block SQL injection on vulnerable parameters
SecRule ARGS:id "@detectSQLi" "id:1001,phase:2,deny,status:403,msg:'SQL Injection attempt blocked on id parameter'"
SecRule ARGS:section "@detectSQLi" "id:1002,phase:2,deny,status:403,msg:'SQL Injection attempt blocked on section parameter'"