Email Subscribers & Newsletters <= 4.2.2 - Missing Authorization to Test Email

2019-11-13 00:00

Chloe Chamberland

Strategic Overview

Status

Patched in 4.2.3

Affected PluginEmail Subscribers & Newsletters – Email Marketing, Post Notifications & Newsletter Plugin for WordPress

Affected Version<= 4.2.2

CVSS4.3Medium

CVECVE-2019-19980

View all Email Subscribers & Newsletters – Email Marketing, Post Notifications & Newsletter Plugin for WordPress vulnerabilities

Vulnerability Overview

The WordPress plugin, Email Subscribers & Newsletters, before 4.2.3 had a privilege bypass flaw that allowed authenticated users (Subscriber or greater access) to send test emails from the administrative dashboard on behalf of an administrator. This occurs because the plugin registers a wp_ajax function to send_test_email.

Technical Analysis

REMEDIATION: Update to version 4.2.3, or a newer patched version --- IDENTIFIER: CWE-305 (Authentication Bypass by Primary Weakness) The authentication algorithm is sound, but the implemented mechanism can be bypassed as the result of a separate weakness that is primary to the authentication error.

External References

https://www.cve.org/CVERecord?id=CVE-2019-19980 https://www.wordfence.com/threat-intel/vulnerabilities/id/a04870e0-41c8-464b-b30e-0bf7900e1433

CVSS Vector

4.3

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeUnchanged
ConfidentialityNone
IntegrityNone
AvailabilityLow

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