CVE-2024-0343: Simple House Rental System XSS Vulnerability

CVE-2024-0343 Overview

CVE-2024-0343 is a cross-site scripting (XSS) vulnerability in CodeAstro Simple House Rental System 5.6. The flaw resides in the Login Panel component and allows remote attackers to inject arbitrary script content through unsanitized input. Exploitation requires user interaction, such as clicking a crafted link, and results in script execution within the victim's browser session. The vulnerability is tracked by VulDB under identifier VDB-250111. Public disclosure has occurred and technical details are accessible in third-party vulnerability databases. The weakness is categorized under [CWE-79] (Improper Neutralization of Input During Web Page Generation).

Critical Impact
Attackers can execute arbitrary JavaScript in a victim's browser via the Login Panel, enabling session hijacking, credential theft, and phishing against Simple House Rental System users.

Affected Products

CodeAstro Simple House Rental System 5.6
Component: Login Panel
CPE: cpe:2.3:a:simple_house_rental_system_project:simple_house_rental_system:1.0

Discovery Timeline

2024-01-09 - CVE-2024-0343 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2024-0343

Vulnerability Analysis

The vulnerability exists in the Login Panel of CodeAstro Simple House Rental System 5.6. The application fails to sanitize or encode user-supplied input before reflecting it in HTTP responses. An attacker crafts a URL or form submission containing JavaScript payloads targeting the login page. When a victim interacts with the malicious content, the injected script executes in the browser under the origin of the vulnerable application.

Because the affected endpoint is unauthenticated, the attack surface extends to any user reaching the Login Panel. The scope is classified as changed, meaning script execution can affect resources beyond the vulnerable component, including session cookies and stored credentials handled by the browser.

Root Cause

The root cause is improper neutralization of input during web page generation, tracked as [CWE-79]. The Login Panel processes request parameters and embeds them directly into the rendered HTML response without contextual output encoding or input validation. This allows HTML and JavaScript syntax supplied by an attacker to be interpreted as active content rather than displayed as literal text.

Attack Vector

Exploitation is remote and requires user interaction. An attacker delivers a crafted link, typically through phishing, social media, or malicious redirects, that includes the XSS payload as a request parameter targeting the Login Panel. When the victim opens the link, the reflected payload executes. Consequences include theft of session tokens, harvesting of credentials submitted on the login form, browser-based redirection, and delivery of secondary payloads. See the VulDB entry #250111 for additional technical details.

Detection Methods for CVE-2024-0343

Indicators of Compromise

HTTP requests to the Login Panel containing script tags, event handlers, or JavaScript URI schemes in query string or form parameters
Web server access logs showing URL-encoded payloads such as %3Cscript%3E, onerror=, or javascript: targeting login endpoints
Unusual outbound requests from user browsers to attacker-controlled domains shortly after visiting login URLs
Session tokens appearing in DNS queries or HTTP referrers to external hosts

Detection Strategies

Deploy a web application firewall with signatures for reflected XSS patterns against the Simple House Rental System login endpoint
Inspect HTTP request parameters for HTML metacharacters and known XSS vectors using intrusion detection rules
Correlate suspicious login-page URLs with subsequent browser telemetry to identify successful script execution

Monitoring Recommendations

Enable verbose HTTP logging on the web server hosting the application and forward logs to a centralized analytics platform
Alert on parameter values containing <, >, script, onerror, or onload keywords in requests to the Login Panel
Monitor for anomalous authentication events that follow requests carrying suspicious query strings

How to Mitigate CVE-2024-0343

Immediate Actions Required

Restrict public exposure of the Simple House Rental System Login Panel until a vendor patch is applied
Deploy WAF rules that block reflected XSS payloads against the affected endpoint
Enforce a strict Content Security Policy (CSP) that disallows inline scripts and untrusted script sources
Notify users about phishing risks that leverage crafted login URLs

Patch Information

No vendor advisory or official patch has been published for CVE-2024-0343 at the time of writing. Administrators should monitor CodeAstro communications and consult the VulDB CTI record #250111 for updates on remediation status.

Workarounds

Place the application behind a reverse proxy that performs input validation and output encoding for all query parameters
Set the HttpOnly and Secure flags on session cookies to reduce the impact of script-based token theft
Apply server-side output encoding to all values reflected on the Login Panel until an upstream fix is available
Consider replacing the affected version with an alternative rental management platform if timely vendor remediation is unavailable

bash

# Example Nginx configuration to add security headers and block common XSS patterns
add_header Content-Security-Policy "default-src 'self'; script-src 'self'; object-src 'none'";
add_header X-XSS-Protection "1; mode=block";
add_header X-Content-Type-Options "nosniff";

location /login {
    if ($args ~* "(<|%3C)script|onerror=|javascript:") {
        return 403;
    }
}