Laravel, File Validation Bypass, CVE-2025-XXXX (Moderate)

How the CVE Works:

The vulnerability in laravel-crud-wizard-free (CVE-2025-XXXX) arises due to improper file validation in versions below 3.4.17. The issue stems from the `illuminate/validation` package (versions 8.0.0 to 11.44.0), which fails to properly sanitize file uploads, allowing attackers to bypass validation rules. This can lead to the upload of malicious files, potentially compromising the server or application. The flaw occurs because the validation logic does not adequately check file MIME types or extensions, enabling attackers to disguise harmful files as legitimate ones. The patched version (3.4.17) addresses this by enforcing stricter validation checks.

DailyCVE Form:

Platform: Laravel
Version: < 3.4.17
Vulnerability: File Validation Bypass
Severity: Moderate
Date: Mar 11, 2025

What Undercode Say:

Exploitation:

1. Attackers can craft malicious files with disguised extensions (e.g., `.php` masked as .jpg).
2. Exploit the lack of MIME type validation to upload harmful scripts.
3. Use tools like `Burp Suite` to intercept and modify file upload requests.
4. Example payload: `); ?>` saved as <code>image.jpg.php</code>.</li> </ol> <h2 style="color: blue;">Protection:</h2> <h2 style="color: blue;">1. Update to laravel-crud-wizard-free version 3.4.17 or higher.</h2> <h2 style="color: blue;">2. Replace `Illuminate\Validation\ValidationServiceProvider::class` with `\MacropaySolutions\LaravelCrudWizard\Providers\ValidationServiceProvider`.</h2> <h2 style="color: blue;">3. Implement custom file validation rules:</h2> [bash] $request->validate([ 'file' => 'required|mimes:jpg,png|max:2048', ]);

   4. Use server-side MIME type verification:

   $file = $request->file('file');
   if ($file->getMimeType() !== 'image/jpeg') {
   abort(422, 'Invalid file type.');
   }
   

   Commands:

   1. Update package:

   composer require macropay-solutions/laravel-crud-wizard-free:3.4.17
   

   2. Verify installed version:

   composer show macropay-solutions/laravel-crud-wizard-free
   

   Code Snippets:

   1. Custom validation rule:

   Validator::extend('safe_file', function ($attribute, $value, $parameters, $validator) {
   return in_array($value->getMimeType(), [bash]);
   });
   

   2. Logging suspicious uploads:

   if ($request->hasFile('file')) {
   Log::info('File upload attempt:', [
   'ip' => $request->ip(),
   'file' => $request->file('file')->getClientOriginalName(),
   ]);
   }
   

   Analytics:

   1. Monitor file upload endpoints for unusual activity.

   1. Use tools like `Fail2Ban` to block IPs with repeated failed upload attempts.
   2. Regularly audit server logs for signs of exploitation.
      By following these steps, you can mitigate the risk posed by this vulnerability and secure your Laravel application.

   References:

   Reported By: https://github.com/advisories/GHSA-3wgq-h4fr-cwg5
   Extra Source Hub:
   Undercode

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