CodeAstro Expense Management System Add Expenses Page 5-Add-Expenses.php cross site scripting

Successful exploitation of CVE-2024-1031 enables an attacker to execute arbitrary JavaScript code within the context of a victim's browser session. This can be leveraged to steal sensitive information, such as session cookies, redirect users to malicious websites, or modify the content displayed on the Expense Management System. The attack is remotely exploitable, meaning an attacker does not require local access to the system. The potential impact extends to all users who interact with the 'Add Expenses' page, as the vulnerability stems from user-supplied input that is not properly sanitized.

Organizations utilizing CodeAstro Expense Management System version 1.0, particularly those with sensitive financial data, are at risk. Shared hosting environments where multiple users share the same server instance are also at increased risk, as a successful exploit could potentially impact other applications hosted on the same server.

• php: Examine the 'templates/5-Add-Expenses.php' file for improper handling of the 'item' argument. Search for instances where user input is directly outputted without proper encoding.

// Example of vulnerable code
<?php echo $_GET['item']; ?>

• generic web: Monitor access logs for suspicious requests targeting the 'Add Expenses' page with unusual parameters in the 'item' field. Look for patterns indicative of XSS attempts. • generic web: Inspect response headers for signs of script injection. Use browser developer tools to check for unexpected JavaScript execution.

1. 2024-01-30Disclosure

   disclosure

1. Reservado2024-01-29
2. Publicada2024-01-30
3. Modificada2025-06-11
4. EPSS atualizado2026-04-02

The primary mitigation for CVE-2024-1031 is to upgrade to CodeAstro Expense Management System version 1.0.1 or later, which includes the necessary fix. If upgrading immediately is not feasible, consider implementing input validation and output encoding on the 'item' argument within the 'templates/5-Add-Expenses.php' file. While not a complete solution, this can reduce the attack surface. Web application firewalls (WAFs) configured to detect and block XSS payloads targeting the 'Add Expenses' page can also provide a temporary layer of protection. After upgrading, verify the fix by attempting to inject a simple XSS payload (e.g., <script>alert('XSS')</script>) into the 'item' field and confirming that the script is not executed.