Zyrex Popup < 1.1 – Admin+ Arbitrary File Upload | CVE 2023-0924 | Plugin Vulnerabilities

Description

The plugin does not validate the type of files uploaded when creating a popup, allowing a high privileged user (such as an Administrator) to upload arbitrary files, even when modifying the file system is disallowed, such as in a multisite install.

Proof of Concept

Create a new popup by filling in anything in the title (Tytul) and link (Link) fields. 
Then select a php file as the image, and click "Dodaj popup" to add the popup.

The uploaded file can be accessed as http://example.com/wp-content/uploads/zyrex_popup/payload.php

By activating the popup (click the "Aktywuj" button), the payload will be loaded and executed whenever the popup is to be shown on the site.

Affects Plugins

Fixed in 1.1

References

CVE

Miscellaneous

Original Researcher

Yogesh Verma

Submitter

Yogesh Verma

Submitter website

https://y0gesh-verma.github.io/

Submitter twitter

Verified

Yes

WPVDB ID

0fd0d7a5-9263-43b6-9244-7880c3d3e6f4

Timeline

Publicly Published

2023-04-04 (about 2 years ago)

Added

2023-04-04 (about 2 years ago)

Last Updated

2023-04-20 (about 2 years ago)

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