CVE-2021-23814

Description

This affects the package unisharp/laravel-filemanager prior to version 2.6.2. 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](https://unisharp.github.io/laravel-filemanager/configfolder-categories).

How to fix CVE-2021-23814

To remediate CVE-2021-23814, upgrade the affected package to a fixed version below.

• —upgrade to 2.6.2 or later

Is CVE-2021-23814 being exploited?

Low — EPSS is 1.8%, meaning exploitation activity has not been observed at scale.

Affected packages (1)

• from 0, < 2.6.2

CVSS scores

References (7)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2021-23814
• PATCHgithub.com/UniSharp/laravel-filemanager
• WEBgithub.com/UniSharp/laravel-filemanager/blob/master/src/Controllers/UploadController.php#L26
• WEBgithub.com/UniSharp/laravel-filemanager/blob/master/src/Controllers/UploadController.php%23L26