Arbitrary file upload in Drag and Drop Multiple File Upload – Contact Form 7 plugin for WordPress



Published: 2020-09-23
Risk High
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-24389
CWE-ID CWE-434
Exploitation vector Network
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
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Drag and Drop Multiple File Upload – Contact Form 7
Web applications / Modules and components for CMS

Vendor Glen Don L. Mongaya

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) Arbitrary file upload

EUVDB-ID: #VU46975

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-2020-24389

CWE-ID: CWE-434 - Unrestricted Upload of File with Dangerous Type

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to the validation of dangerous file extensions fails within ".phar" and ".phpt". A remote attacker can upload a malicious file and execute it on the server.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Drag and Drop Multiple File Upload – Contact Form 7: 1.2.2 - 1.3.5.4

External links

http://wpvulndb.com/vulnerabilities/10411/
http://sysdream.com/news/lab/2020-09-21-cve-2020-24389-remote-code-execution-on-drag-and-drop-multiple-file-upload-contact-form-7/
http://plugins.trac.wordpress.org/changeset/2369106/drag-and-drop-multiple-file-upload-contact-form-7


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.



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