CVE-2024-1832: Complete File Management System SQLi Flaw

CVE-2024-1832 Overview

A critical SQL injection vulnerability has been identified in SourceCodester Complete File Management System version 1.0. This vulnerability exists in the Admin Login Form component, specifically within the /admin/ endpoint. An attacker can exploit this flaw by manipulating the username parameter with crafted SQL injection payloads, enabling unauthorized access to the administrative interface and potentially compromising the entire database.

Critical Impact

This SQL injection vulnerability allows unauthenticated remote attackers to bypass authentication, extract sensitive data, modify database contents, and potentially achieve full system compromise through the administrative interface.

Affected Products

• SourceCodester Complete File Management System 1.0
• Nelzkie15 Complete File Management System 1.0

Discovery Timeline

• 2024-02-23 - CVE-2024-1832 published to NVD
• 2024-12-11 - Last updated in NVD database

Technical Details for CVE-2024-1832

Vulnerability Analysis

This vulnerability stems from improper input validation in the Admin Login Form of the Complete File Management System. The application fails to properly sanitize user-supplied input in the username parameter before incorporating it into SQL queries. This classic authentication bypass vulnerability allows attackers to inject malicious SQL statements that alter the intended query logic.

The exploitation payload observed in the disclosure (torada' or '1' = '1' -- -) demonstrates a boolean-based SQL injection technique. When processed by the vulnerable application, this payload causes the SQL query to always evaluate as true, effectively bypassing the authentication mechanism entirely. This grants attackers immediate administrative access without valid credentials.

Root Cause

The root cause of this vulnerability is the direct concatenation of user-supplied input into SQL queries without proper sanitization or the use of parameterized queries. The Admin Login Form accepts user input for the username field and constructs a SQL query by directly embedding this value, creating an injection point that attackers can exploit to manipulate the query structure.

Attack Vector

The attack can be launched remotely over the network without requiring any prior authentication or user interaction. An attacker targets the /admin/ endpoint and submits a specially crafted payload in the username parameter of the login form. The URL-encoded payload torada%27+or+%271%27+%3D+%271%27+--+- decodes to a standard SQL injection string that forces the authentication query to return true, granting administrative access.

The attack follows these steps:

1. The attacker navigates to the Admin Login Form at /admin/
2. A malicious SQL injection payload is submitted in the username field
3. The backend SQL query is manipulated to bypass authentication
4. The attacker gains unauthorized administrative access to the system

For detailed technical analysis of this vulnerability, refer to the Notion SQL Injection Analysis documentation.

Detection Methods for CVE-2024-1832

Indicators of Compromise

• HTTP requests to /admin/ containing SQL injection patterns such as ' or '1'='1, --, or /**/ comment sequences in the username parameter
• Unusual authentication success events from unknown IP addresses
• Database query logs showing malformed or suspicious SQL statements
• Multiple failed login attempts followed by immediate successful authentication from the same source

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect and block common SQL injection patterns in HTTP POST parameters
• Enable detailed logging on the application server to capture all authentication attempts to the /admin/ endpoint
• Configure database audit logging to identify anomalous query patterns or unexpected data access
• Deploy intrusion detection systems with signatures for SQL injection attack patterns

Monitoring Recommendations

• Monitor web server access logs for requests to /admin/ with encoded special characters (%27, %3D, %2D) in POST data
• Set up alerts for successful administrative logins from previously unseen IP addresses or geographic locations
• Review database logs for queries containing boolean logic manipulation patterns
• Establish baseline authentication patterns and alert on statistical anomalies

How to Mitigate CVE-2024-1832

Immediate Actions Required

• Restrict network access to the /admin/ endpoint using IP whitelisting or VPN requirements
• Implement a Web Application Firewall (WAF) with SQL injection detection rules
• Consider temporarily disabling the administrative interface until a patch is available
• Review access logs to identify any potential exploitation attempts

Patch Information

As of the last update, no official vendor patch has been released for this vulnerability. The Complete File Management System version 1.0 from SourceCodester (Nelzkie15) remains vulnerable. Organizations using this software should contact the vendor for patch availability or consider implementing the workarounds described below.

For additional vulnerability intelligence, refer to VulDB #254623.

Workarounds

• Implement parameterized queries or prepared statements in the login form code to prevent SQL injection
• Add server-side input validation to reject special characters commonly used in SQL injection attacks
• Deploy a reverse proxy with ModSecurity or similar WAF capabilities to filter malicious requests
• Restrict administrative access to trusted internal networks only using firewall rules or VPN

# Example: Apache ModSecurity rule to block SQL injection attempts
SecRule ARGS "@detectSQLi" "id:1001,phase:2,deny,status:403,log,msg:'SQL Injection Detected'"