CVE-2024-0494: Kashipara Billing Software SQLi Vulnerability

CVE-2024-0494 Overview

A critical SQL Injection vulnerability has been identified in Kashipara Billing Software version 1.0. The vulnerability exists in the material_bill.php file within the HTTP POST Request Handler component. Attackers can exploit this flaw by manipulating the itemtypeid parameter, allowing them to inject malicious SQL queries and potentially compromise the underlying database. This vulnerability can be exploited remotely without authentication, posing a severe risk to organizations using the affected software.

Critical Impact

Remote attackers can execute arbitrary SQL commands on the database server, potentially leading to complete data breach, unauthorized data modification, or database destruction. No authentication is required to exploit this vulnerability.

Affected Products

• Kashipara Billing Software 1.0

Discovery Timeline

• 2024-01-13 - CVE-2024-0494 published to NVD
• 2024-11-21 - Last updated in NVD database

Technical Details for CVE-2024-0494

Vulnerability Analysis

This SQL Injection vulnerability (CWE-89) allows remote attackers to manipulate SQL queries executed by the application. The vulnerable component, material_bill.php, processes HTTP POST requests without proper sanitization of the itemtypeid parameter. When user-supplied input is directly concatenated into SQL statements without validation or parameterized queries, attackers can inject malicious SQL code that alters the intended query logic.

The vulnerability requires no privileges or user interaction to exploit, making it particularly dangerous in internet-facing deployments. Successful exploitation could allow attackers to read, modify, or delete sensitive billing data, extract database credentials, or potentially escalate privileges within the database management system.

Root Cause

The root cause of this vulnerability is insufficient input validation and improper construction of SQL queries. The application fails to sanitize the itemtypeid parameter before incorporating it into SQL statements. Instead of using parameterized queries or prepared statements, the code appears to directly concatenate user input into SQL commands, creating a classic SQL Injection attack surface.

Attack Vector

The attack vector is network-based, targeting the HTTP POST Request Handler in material_bill.php. An attacker can craft a malicious HTTP POST request containing SQL injection payloads within the itemtypeid parameter. Since no authentication is required to reach the vulnerable endpoint, any network-accessible attacker can attempt exploitation.

The injection point allows for various SQL injection techniques including UNION-based attacks for data extraction, error-based injection for database fingerprinting, and potentially stacked queries for database manipulation or command execution depending on the underlying database configuration.

For detailed technical information about the exploitation mechanism, refer to the GitHub SQL Injection Report and the VulDB advisory.

Detection Methods for CVE-2024-0494

Indicators of Compromise

• Unusual or malformed HTTP POST requests to material_bill.php containing SQL syntax in the itemtypeid parameter
• Database query logs showing unexpected SQL commands, UNION statements, or error-inducing payloads
• Web application firewall alerts for SQL injection patterns targeting billing endpoints
• Anomalous database access patterns such as bulk data retrieval or unauthorized schema queries
• Error messages in application logs indicating SQL syntax errors from injected payloads

Detection Strategies

• Deploy web application firewalls (WAF) with SQL injection detection rules configured to monitor POST requests to material_bill.php
• Implement application-level logging to capture and analyze all itemtypeid parameter values
• Configure database audit logging to detect unusual query patterns or unauthorized data access attempts
• Use intrusion detection systems (IDS) with signatures for common SQL injection payloads

Monitoring Recommendations

• Establish baseline metrics for normal database query patterns and alert on deviations
• Monitor HTTP traffic logs for POST requests containing SQL keywords like SELECT, UNION, DROP, or comment sequences
• Set up real-time alerting for database errors that may indicate exploitation attempts
• Implement file integrity monitoring on material_bill.php to detect unauthorized modifications

How to Mitigate CVE-2024-0494

Immediate Actions Required

• Restrict network access to the Kashipara Billing Software to trusted IP addresses only
• Implement a web application firewall (WAF) with SQL injection protection rules
• Review and audit database permissions to apply least privilege principles
• Enable comprehensive logging on both the web application and database layers
• Consider taking the affected application offline until proper remediation can be applied

Patch Information

No vendor patch information is currently available for CVE-2024-0494. Organizations should contact Kashipara directly for security updates or consider alternative billing software solutions. In the absence of an official patch, implementing robust input validation and parameterized queries at the application level is essential. For additional details, see the VulDB entry.

Workarounds

• Implement strict input validation for the itemtypeid parameter, accepting only expected numeric values
• Deploy a reverse proxy or WAF to filter malicious SQL injection payloads before they reach the application
• Use database-level prepared statements or parameterized queries if modifying the application code
• Segment the billing system network to limit lateral movement in case of compromise
• Apply principle of least privilege to the database account used by the application

# Example WAF rule to block SQL injection attempts (ModSecurity)
SecRule ARGS:itemtypeid "@detectSQLi" \
    "id:1001,\
    phase:2,\
    block,\
    msg:'SQL Injection attempt detected in itemtypeid',\
    logdata:'Matched Data: %{MATCHED_VAR}',\
    severity:'CRITICAL'"