Vulnerability identifier: #VU80191

Vulnerability risk: High

CVSSv3.1: 8.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2023-4596

CWE-ID: CWE-434

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
Forminator Contact Form, Poll & Quiz Builder
Web applications / Modules and components for CMS

Vendor: WPMU DEV

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to insufficient validation of file extension when uploading files within the upload_post_image() function. A remote non-authenticated attacker can upload and execute arbitrary file on the system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Forminator Contact Form, Poll & Quiz Builder: 1.5.1 - 1.24.6

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External links
http://www.exploit-db.com/exploits/51664
http://www.wordfence.com/threat-intel/vulnerabilities/id/9cd87da6-1f4c-4a15-8ebb-6e0f8ef72513?source=cve
http://plugins.trac.wordpress.org/changeset/2954409/forminator/trunk/library/fields/postdata.php
http://www.wordfence.com/threat-intel/vulnerabilities/wordpress-plugins/forminator/forminator-1246-unauthenticated-arbitrary-file-upload

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.