WordPress, Authentication Bypass, CVE-2025-1717 (Critical)

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The CVE-2025-1717 vulnerability affects the Login Me Now plugin for WordPress, specifically versions up to and including 1.7.2. This critical flaw allows unauthenticated attackers to bypass authentication and log in as any existing user, including administrators. The issue stems from the insecure handling of arbitrary transient names in the `AutoLogin::listen()` function. Attackers can exploit this by leveraging a transient name and value from another software component, enabling them to impersonate users without proper credentials. While the plugin itself is not inherently vulnerable, its reliance on external transient data creates a significant security risk. This vulnerability highlights the importance of secure authentication mechanisms and proper validation of external inputs in plugin development.

DailyCVE Form:

Platform: WordPress
Version: 1.7.2 and earlier
Vulnerability: Authentication Bypass
Severity: Critical
Date: 02/27/2025

What Undercode Say:

Exploitation Details:

  1. Attackers identify the transient name and value from external software.
  2. They craft a request to the `AutoLogin::listen()` function with the transient data.
  3. The plugin validates the transient, allowing unauthorized access to user accounts.

Protection Measures:

  1. Update the Login Me Now plugin to the latest version.
  2. Disable the plugin if no longer in use.

3. Implement strong input validation for transient data.

  1. Use web application firewalls (WAFs) to block suspicious requests.

Analytics:

  • CVSS Score: 9.8 (Critical)
  • Attack Vector: Network-based
  • Complexity: Low
  • Privileges Required: None
  • User Interaction: Not required

Commands:

1. Check plugin version:

wp plugin get login-me-now --field=version

2. Update plugin:

wp plugin update login-me-now

3. Disable plugin:

wp plugin deactivate login-me-now

Code Snippets:

1. Validate transient data in PHP:

if (isset($_GET[bash]) && isValidTransient($_GET[bash])) {
// Proceed with authentication
} else {
die("Invalid transient data.");
}

2. WAF rule to block suspicious requests:

if ($args ~ "transient=") {
return 403;
}

References:

  • bash
  • bash
  • bash
    By following these steps, users can mitigate the risk posed by CVE-2025-1717 and secure their WordPress installations.

References:

Reported By: https://nvd.nist.gov/vuln/detail/CVE-2025-1717
Extra Source Hub:
Undercode

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