Arbitrary File Upload Affecting unisharp/laravel-filemanager package, versions <2.6.2


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.19% (58th percentile)

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  • Snyk IDSNYK-PHP-UNISHARPLARAVELFILEMANAGER-1567199
  • published16 Dec 2021
  • disclosed18 Aug 2021
  • creditHuy Nguyen

Introduced: 18 Aug 2021

CVE-2021-23814  (opens in a new tab)
CWE-94  (opens in a new tab)
First added by Snyk

How to fix?

Upgrade unisharp/laravel-filemanager to version 2.6.2 or higher.

Overview

unisharp/laravel-filemanager is an A file upload/editor intended for use with Laravel 5 to 6 and CKEditor / TinyMCE.

Affected versions of this package are vulnerable to Arbitrary File Upload. The upload() function does not sufficiently validate the file type when uploading.

An attacker may be able to reproduce the following steps:

  • Install a package with a web Laravel application.
  • Navigate to the Upload window
  • Upload an image file, then capture the request
  • Edit the request contents with a malicious file (webshell)
  • Enter the path of file uploaded on URL - Remote Code Execution

Note: Prevention for bad extensions can be done by using a whitelist in the config file(lfm.php). Corresponding document can be found in the here.

CVSS Scores

version 3.1