CVE-2021-4073

RegistrationMagic <= 5.0.1.7 Authentication Bypass

Severity Score

8.1

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The RegistrationMagic WordPress plugin made it possible for unauthenticated users to log in as any site user, including administrators, if they knew a valid username on the site due to missing identity validation in the social login function social_login_using_email() of the plugin. This affects versions equal to, and less than, 5.0.1.7.

El plugin RegistrationMagic de WordPress permitía a usuarios no autenticados iniciar sesión como cualquier usuario del sitio, incluidos los administradores, si conocían un nombre de usuario válido en el sitio debido a una falta de comprobación de la identidad en la función login social social_login_using_email() del plugin. Esto afecta a las versiones iguales y menores a 5.0.1.7

*Credits: Chloe Chamberland, Wordfence, Marco Wotschka, Wordfence, AyeCode Ltd

CVSS Scores

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-12-06 CVE Reserved
2021-12-08 CVE Published
2024-09-16 CVE Updated
2024-09-16 First Exploit
2024-11-05 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-287: Improper Authentication

CAPEC

References (3)

URL	Tag	Source
https://www.wordfence.com/vulnerability-advisories/#CVE-2021-4073	Third Party Advisory

URL	Date	SRC
https://www.wordfence.com/blog/2021/12/authentication-bypass-vulnerability-patched-in-user-registration-plugin	2024-09-16

URL	Date	SRC
https://plugins.trac.wordpress.org/changeset/2635173/custom-registration-form-builder-with-submission-manager/trunk/services/class_rm_user_services.php	2022-01-21

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Metagauss Search vendor "Metagauss"		Registrationmagic Search vendor "Metagauss" for product "Registrationmagic"				<= 5.0.1.7 Search vendor "Metagauss" for product "Registrationmagic" and version " <= 5.0.1.7"		wordpress		Affected