CVE-2024-8746

File Manager Pro <= 8.3.9 - Unauthenticated Backup File Download and Upload

2024-10-15 00:00
TANG Cheuk Hei (siunam)

Strategic Overview

Status
Patched in 8.3.10
Affected Plugin
File Manager Pro
Affected Version
<= 8.3.9
CVSS
7.5High
Weakness type
CWE-434 · Unrestricted Upload of File with Dangerous Type
CVE
CVE-2024-8746
View all File Manager Pro vulnerabilities

At a glance

CVE-2024-8746 is a high-severity Unrestricted Upload of File with Dangerous Type vulnerability in the File Manager Pro WordPress plugin, affecting versions <= 8.3.9. It carries a CVSS score of 7.5 (reachable over the network; high confidentiality, integrity, availability impact). Exploitation requires no authentication. The issue is fixed in version 8.3.10; sites on affected versions should update now. Disclosed October 2024, reported by TANG Cheuk Hei (siunam).

Vulnerability Overview

The File Manager Pro plugin for WordPress is vulnerable to arbitrary backup file downloads and uploads due to missing file type validation via the 'mk_file_folder_manager_shortcode' ajax action in all versions up to, and including, 8.3.9. This makes it possible for unauthenticated attackers, if granted access to the File Manager by an administrator, to download and upload arbitrary backup files on the affected site's server which may make remote code execution possible.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, and no privileges on the target site. A successful exploit has high impact on confidentiality, integrity, availability — full site compromise territory.

CWE-434: Unrestricted Upload of File with Dangerous Type

File Manager Pro <= 8.3.9 carries this weakness at mk_file_folder_manager_shortcode, and reaching it takes no account at all. An unrestricted file upload lets a caller store a file whose type or destination the application does not properly constrain.

If an uploaded file lands anywhere the server will execute, the flaw becomes remote code execution and the site should be treated as fully compromised. For File Manager Pro the fix is 8.3.10: builds <= 8.3.9 are affected, anything from 8.3.10 onward is not.

Remediation

Update to version 8.3.10, or a newer patched version

How does WordSec protect against this?

Requests carrying this pattern arrive without a session, so nothing upstream of the firewall gets a chance to reject them: WordSec's web application firewall inspects request payloads before WordPress loads them. Classes like this one can leave something behind, so the staged malware scanner is the second half: it looks for dropped files and modified code rather than for the request that created them. None of that substitutes for the fix: File Manager Pro 8.3.10 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Scanner
  • Login Security

External References

https://www.cve.org/CVERecord?id=CVE-2024-8746https://www.wordfence.com/threat-intel/vulnerabilities/id/88f1eb9a-f3bb-4b62-975f-a6cb95850966https://nvd.nist.gov/vuln/detail/CVE-2024-8746

Related records

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