Ultimate Member <= 2.6.6 - Privilege Escalation via Arbitrary User Meta Updates

2023-06-29 00:00

Strategic Overview

Status

Patched in 2.6.7

Affected PluginUltimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin

Affected Version<= 2.6.6

CVSS9.8Critical

CVECVE-2023-3460

View all Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin vulnerabilities

Vulnerability Overview

The Ultimate Member plugin for WordPress is vulnerable to privilege escalation in versions up to, and including, 2.6.6. This is due to the plugin using a predefined list of user meta keys that are banned which can be bypassed via a few method like adding slashes to the user meta key. This makes it possible for unauthenticated attackers to register on a site as an administrator.

Technical Analysis

REMEDIATION: Update to version 2.6.7, or a newer patched version --- IDENTIFIER: CWE-266 (Incorrect Privilege Assignment) A product incorrectly assigns a privilege to a particular actor, creating an unintended sphere of control for that actor.

External References

https://www.cve.org/CVERecord?id=CVE-2023-3460 https://www.wordfence.com/threat-intel/vulnerabilities/id/4b0e763e-f03e-41fb-8c6c-4de5d3acae00

CVSS Vector

9.8

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

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