Frontend File Manager <= 18.2 - Unauthenticated HTML Injection leading to Spam Emails

2021-07-12 00:00

Jerome Bruandet

Strategic Overview

Status

Patched in 18.3

Affected PluginFrontend File Manager Plugin

Affected Version< 18.3

CVSS7.2High

CVECVE-2021-4350

View all Frontend File Manager Plugin vulnerabilities

Vulnerability Overview

The Frontend File Manager plugin for WordPress is vulnerable to Unauthenticated HTML Injection in versions up to, and including, 18.2. This is due to lacking authentication protections on the wpfm_send_file_in_email AJAX action. This makes it possible for unauthenticated attackers to send emails using the site with a custom subject, recipient email, and body with unsanitized HTML content. This effectively lets the attacker use the site as a spam relay.

Technical Analysis

REMEDIATION: Update to version 18.3, or a newer patched version --- IDENTIFIER: CWE-862 (Missing Authorization) The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

External References

https://www.cve.org/CVERecord?id=CVE-2021-4350 https://www.wordfence.com/threat-intel/vulnerabilities/id/49150180-9de0-4318-b21b-779daaeb7a52

CVSS Vector

7.2

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:L

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeChanged
ConfidentialityNone
IntegrityLow
AvailabilityLow

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