code-projects Crud Operation System add.php cross site scripting

Successful exploitation of CVE-2024-11820 allows an attacker to inject arbitrary JavaScript code into the Crud Operation System application. This can lead to various malicious outcomes, including session hijacking, defacement of the application, and redirection of users to phishing sites. The attacker could potentially steal sensitive user data, such as credentials or personal information, if the application handles such data. Given the XSS nature, the impact is primarily focused on users interacting with the vulnerable application, but the attacker could leverage this to gain further access to the underlying system depending on user privileges and application configuration.

Organizations using Crud Operation System version 1.0 are at immediate risk. Shared hosting environments where multiple users share the same instance of the application are particularly vulnerable, as an attacker could potentially compromise other users' accounts through XSS. Applications that rely on the Crud Operation System for user input processing are also at risk.

• php / web: Examine access logs for requests to /add.php with unusual or suspicious values in the 'saddress' parameter. Look for patterns indicative of XSS payloads (e.g., <script> tags, event handlers). • generic web: Use curl or wget to test the /add.php endpoint with a simple XSS payload (e.g., <script>alert(1)</script>). Verify that the payload is reflected in the response. • generic web: Check response headers for Content-Security-Policy (CSP) directives. A strong CSP can mitigate XSS attacks even if the vulnerability exists.

1. 2024-11-27Disclosure

   disclosure

1. Reserviert2024-11-26
2. Veröffentlicht2024-11-27
3. EPSS aktualisiert2026-04-02

The primary mitigation for CVE-2024-11820 is to upgrade to version 1.0.1 or later, which includes the necessary fix. If upgrading is not immediately feasible, consider implementing input validation and output encoding on the 'saddress' parameter within the /add.php file. This can help prevent the injection of malicious scripts. Web application firewalls (WAFs) configured to detect and block XSS payloads can also provide a temporary layer of protection. Carefully review and sanitize all user inputs to prevent similar vulnerabilities in the future.