CVE-2022-3125

Frontend File Manager <= 21.2 - Authenticated (Subscriber+) Arbitrary File Upload

2022-09-07 00:00
Raad Haddad

Strategic Overview

Status
Patched in 21.3
Affected Plugin
Frontend File Manager Plugin
Affected Version
<= 21.2
CVSS
8.8High
Weakness type
CWE-434 · Unrestricted Upload of File with Dangerous Type
CVE
CVE-2022-3125
View all Frontend File Manager Plugin vulnerabilities

At a glance

CVE-2022-3125 is a high-severity Unrestricted Upload of File with Dangerous Type vulnerability in the Frontend File Manager Plugin WordPress plugin, affecting versions <= 21.2. It carries a CVSS score of 8.8 (reachable over the network; low attack complexity; high confidentiality, integrity, availability impact). Exploitation requires an authenticated account at Subscriber level or above. The issue is fixed in version 21.3; sites on affected versions should update now. Disclosed September 2022, reported by Raad Haddad.

Vulnerability Overview

The Frontend File Manager plugin for WordPress is vulnerable to arbitrary file uploads in versions up to, and including, 21.2. The vulnerability makes it possible for authenticated attackers, with subscriber-level permissions and above, to upload arbitrary files on the affected sites server and change their file extensions which may make remote code execution possible.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no interaction from a victim user. A successful exploit has high impact on confidentiality, integrity, availability — full site compromise territory.

CWE-434: Unrestricted Upload of File with Dangerous Type

Reaching this weakness in Frontend File Manager Plugin <= 21.2 takes an account at Subscriber level or above. 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 Frontend File Manager Plugin the fix is 21.3: builds <= 21.2 are affected, anything from 21.3 onward is not.

Remediation

Update to version 21.3, or a newer patched version

How does WordSec protect against this?

An attacker needs Subscriber access first, so the firewall sees the attempt as traffic from a logged-in account: 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: Frontend File Manager Plugin 21.3 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Scanner
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2022-3125https://www.wordfence.com/threat-intel/vulnerabilities/id/628eef73-1725-4290-bb30-07792d1d5b6chttps://nvd.nist.gov/vuln/detail/CVE-2022-3125

Related records

Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C