CVE-2021-4073 : The RegistrationMagic WordPress plugin made it possible for unauthenticated user

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.

Published 2021-12-14 16:15:10

Updated 2022-01-21 20:58:39

Source Wordfence

View at NVD, CVE.org

Vulnerability category: BypassGain privilege

Products affected by CVE-2021-4073

Metagauss » Registrationmagic » For Wordpress
Versions up to, including, (<=) 5.0.1.7
cpe:2.3:a:metagauss:registrationmagic:*:*:*:*:*:wordpress:*:*
Matching versions

Exploit prediction scoring system (EPSS) score for CVE-2021-4073

EPSS FAQ

0.37%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 73 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-4073

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
6.8	MEDIUM	AV:N/AC:M/Au:N/C:P/I:P/A:P	8.6	6.4	NIST
Access Vector: Network Access Complexity: Medium Authentication: None Confidentiality Impact: Partial Integrity Impact: Partial Availability Impact: Partial
8.1	HIGH	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H	2.2	5.9	NIST
Attack Vector: Network Attack Complexity: High Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: High
9.8	CRITICAL	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	3.9	5.9	Wordfence
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: High

CWE ids for CVE-2021-4073

CWE-287 Improper Authentication

When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.

Assigned by: security@wordfence.com (Primary)

References for CVE-2021-4073

https://www.wordfence.com/blog/2021/12/authentication-bypass-vulnerability-patched-in-user-registration-plugin/

Authentication Bypass Vulnerability Patched in User Registration Plugin
Exploit;Third Party Advisory
https://www.wordfence.com/vulnerability-advisories/#CVE-2021-4073

Vulnerability Advisories - Wordfence
Third Party Advisory
https://plugins.trac.wordpress.org/changeset/2635173/custom-registration-form-builder-with-submission-manager/trunk/services/class_rm_user_services.php

Changeset 2635173 for custom-registration-form-builder-with-submission-manager/trunk/services/class_rm_user_services.php – WordPress Plugin Repository
Patch;Third Party Advisory

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Vulnerability Details : CVE-2021-4073

Products affected by CVE-2021-4073

Exploit prediction scoring system (EPSS) score for CVE-2021-4073

CVSS scores for CVE-2021-4073

CWE ids for CVE-2021-4073

References for CVE-2021-4073