CVE-2024-3719: House Rental Management System SQLi Flaw

CVE-2024-3719 Overview

CVE-2024-3719 is a SQL injection vulnerability in Campcodes House Rental Management System 1.0. The flaw resides in the ajax.php file, where the id parameter is passed to a database query without proper sanitization. An authenticated remote attacker can manipulate the id argument to inject arbitrary SQL statements. Public exploit details have been disclosed, increasing the risk of opportunistic exploitation. The weakness is tracked as CWE-89 and carries the VulDB identifier VDB-260571.

Critical Impact
Successful exploitation allows attackers to read, modify, or delete rental system data, including tenant records and administrative credentials.

Affected Products

Campcodes House Rental Management System 1.0
Component: ajax.php (vulnerable id parameter)
CPE: cpe:2.3:a:campcodes:house_rental_management_system:1.0:*:*:*:*:*:*:*

Discovery Timeline

2024-04-13 - CVE-2024-3719 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2024-3719

Vulnerability Analysis

The vulnerability is a classic SQL injection [CWE-89] in the ajax.php endpoint of the House Rental Management System. The application concatenates the user-supplied id parameter directly into a SQL query without parameterization or input validation. Attackers holding low-privilege credentials can submit crafted id values through HTTP requests to alter query semantics.

Because the attack is remote and requires only low privileges with no user interaction, exploitation is straightforward using standard web request tooling. The disclosed proof of concept lowers the barrier for attackers scanning the internet for exposed installations.

Root Cause

The root cause is improper neutralization of special elements used in an SQL command. The application does not use prepared statements or bound parameters when constructing the query that references the id value. Any metacharacters such as single quotes, UNION, or comment sequences are interpreted by the MySQL backend as part of the query structure.

Attack Vector

An attacker submits an HTTP request to ajax.php with a malicious id value. Typical payloads use UNION SELECT statements to extract data from the users or tenants tables, or boolean-based blind techniques to enumerate schema contents. Because the CVSS impact ratings are High across confidentiality, integrity, and availability, an attacker can also modify or drop tables depending on database privileges.

The vulnerability is described in detail in the public GitHub Vulnerability Report and the VulDB entry #260571. No verified exploit code is reproduced here.

Detection Methods for CVE-2024-3719

Indicators of Compromise

HTTP requests to ajax.php containing SQL metacharacters in the id parameter, such as single quotes, --, /*, UNION, SELECT, or SLEEP(
Web server logs showing repeated 500-series responses or unusually long response times against ajax.php
Unexpected outbound queries or data exports from the MySQL backend serving the rental management application
New or modified rows in administrative tables lacking legitimate user activity trails

Detection Strategies

Deploy web application firewall (WAF) rules that flag SQL injection payloads targeting ajax.php?id=
Enable MySQL general query logging and alert on queries referencing sensitive tables outside expected application code paths
Correlate authentication events with subsequent anomalous parameter usage from the same session

Monitoring Recommendations

Forward web server and database logs to a centralized SIEM for query pattern analysis
Baseline normal ajax.php request patterns and alert on deviations in parameter length or character composition
Monitor for account creation, privilege changes, or bulk data reads in the rental system database

How to Mitigate CVE-2024-3719

Immediate Actions Required

Restrict network access to the House Rental Management System to trusted IP ranges until a patch is applied
Audit application logs for prior exploitation attempts against ajax.php
Rotate database and application account credentials if compromise is suspected
Review database user privileges and enforce least privilege on the account used by the web application

Patch Information

At the time of publication, Campcodes has not released a vendor advisory or official patch for CVE-2024-3719. Operators should track the vendor's channels for updates and consider replacing the application if fixes remain unavailable. Refer to the VulDB CTIID #260571 entry for ongoing tracking.

Workarounds

Place the application behind a WAF configured to block SQL injection signatures on the id parameter
Apply a virtual patch that validates id as a strictly numeric value before requests reach ajax.php
Disable or remove the vulnerable ajax.php endpoint if it is not required for production operations
Enforce database-level query restrictions using stored procedures or read-only accounts where feasible

bash

# Example nginx configuration to reject non-numeric id values before reaching ajax.php
location = /ajax.php {
    if ($arg_id !~ "^[0-9]+$") {
        return 403;
    }
    include fastcgi_params;
    fastcgi_pass unix:/run/php/php-fpm.sock;
}