CVE-2024-7947: Janobe Point Of Sales System SQLi Flaw

CVE-2024-7947 Overview

A critical SQL injection vulnerability has been identified in SourceCodester Point of Sales and Inventory Management System version 1.0. The vulnerability exists in the login.php file where the email parameter is not properly sanitized before being used in SQL queries. This allows remote attackers to inject malicious SQL statements, potentially leading to unauthorized access, data theft, or database manipulation.

Critical Impact

Unauthenticated remote attackers can exploit this SQL injection vulnerability in the login functionality to bypass authentication, extract sensitive data, or manipulate the database without requiring valid credentials.

Affected Products

• Janobe Point of Sales and Inventory Management System version 1.0
• SourceCodester Point of Sales and Inventory Management System 1.0

Discovery Timeline

• 2024-08-20 - CVE-2024-7947 published to NVD
• 2024-08-21 - Last updated in NVD database

Technical Details for CVE-2024-7947

Vulnerability Analysis

This SQL injection vulnerability affects the authentication mechanism of the Point of Sales and Inventory Management System. The vulnerable login.php file accepts user-supplied input through the email parameter without proper input validation or sanitization. When this unsanitized input is directly concatenated into SQL queries, it enables attackers to manipulate the query structure and execute arbitrary SQL commands against the backend database.

The vulnerability can be exploited remotely over the network without requiring any authentication or user interaction. Since the attack targets the login functionality, successful exploitation could allow attackers to bypass authentication entirely, enumerate database contents, extract sensitive customer and sales data, or even gain administrative access to the system.

Root Cause

The root cause of this vulnerability is improper input validation in the login.php file. The application fails to properly sanitize or parameterize the email input parameter before incorporating it into SQL queries. This classic CWE-89 (SQL Injection) weakness occurs when user-controllable input is directly concatenated into SQL statements rather than using prepared statements or parameterized queries.

Attack Vector

The attack can be initiated remotely over the network by submitting a specially crafted HTTP request to the login.php endpoint. An attacker manipulates the email parameter to inject malicious SQL syntax that alters the intended query logic.

For example, an attacker could inject SQL payloads such as authentication bypass strings or UNION-based injection payloads to extract data from the database. Since the vulnerability exists in the login functionality, no prior authentication is required to exploit it. The exploit has been publicly disclosed, increasing the risk of active exploitation in the wild.

Technical details and discussion of this vulnerability can be found in the GitHub Issue Discussion and VulDB Entry #275139.

Detection Methods for CVE-2024-7947

Indicators of Compromise

• Unusual SQL error messages appearing in application logs from the login.php endpoint
• Repeated failed login attempts with malformed email addresses containing SQL syntax characters (e.g., single quotes, semicolons, UNION statements)
• Unexpected database queries or commands in database logs originating from the web application
• Evidence of data exfiltration or unauthorized access to user accounts

Detection Strategies

• Deploy Web Application Firewall (WAF) rules to detect and block SQL injection patterns in the email parameter
• Monitor HTTP request logs for suspicious payloads targeting login.php containing SQL injection signatures
• Implement database activity monitoring to detect anomalous queries such as UNION-based extractions or authentication bypass attempts
• Configure intrusion detection systems (IDS) with signatures for common SQL injection attack patterns

Monitoring Recommendations

• Enable detailed logging for all authentication attempts and database queries related to the login functionality
• Set up alerts for multiple failed authentication attempts from the same IP address with varying payloads
• Monitor for successful logins that occur without corresponding valid credential validation in application logs
• Review web server access logs regularly for requests to login.php with encoded or obfuscated SQL payloads

How to Mitigate CVE-2024-7947

Immediate Actions Required

• Take the affected Point of Sales and Inventory Management System offline if it handles sensitive data and cannot be patched immediately
• Implement a Web Application Firewall (WAF) with SQL injection protection rules to filter malicious requests to login.php
• Restrict network access to the application to trusted IP addresses only
• Review database and application logs for signs of prior exploitation

Patch Information

As of the last NVD update on 2024-08-21, no official vendor patch has been released for this vulnerability. Organizations using SourceCodester Point of Sales and Inventory Management System 1.0 should monitor vendor channels for security updates and apply patches as soon as they become available. Given the critical nature of this SQL injection vulnerability in the authentication mechanism, consider alternative solutions if patches are not forthcoming.

Workarounds

• Implement prepared statements or parameterized queries in the login.php file to prevent SQL injection if source code modification is possible
• Deploy a reverse proxy with SQL injection filtering capabilities in front of the application
• Add server-side input validation to strictly validate the email parameter format before processing
• Consider implementing a CAPTCHA or rate limiting on the login page to slow down automated exploitation attempts
• Isolate the database server from direct internet access and ensure it only accepts connections from the application server

# Example WAF rule configuration (ModSecurity)
# Add to modsecurity.conf or rules file to block SQL injection attempts
SecRule ARGS:email "@detectSQLi" \
    "id:1001,\
    phase:2,\
    deny,\
    status:403,\
    log,\
    msg:'SQL Injection attempt detected in email parameter',\
    tag:'application-multi',\
    tag:'language-multi',\
    tag:'platform-multi',\
    tag:'attack-sqli'"