CVE-2021-4073 : Security Advisory and Response
Discover the critical CVE-2021-4073 affecting RegistrationMagic plugin version 5.0.1.7 and below. Learn about the impact and mitigation steps to secure your WordPress site.
A critical vulnerability, CVE-2021-4073, has been identified in the RegistrationMagic WordPress plugin version 5.0.1.7 and below. This vulnerability allows unauthenticated users to log in as any site user, including administrators, if they have a valid username. Here's everything you need to know about this security issue.
Understanding CVE-2021-4073
CVE-2021-4073 is an authentication bypass vulnerability in the RegistrationMagic WordPress plugin, affecting versions up to 5.0.1.7.
What is CVE-2021-4073?
The RegistrationMagic plugin allowed unauthenticated users to exploit an identity validation flaw in the social login function, enabling unauthorized access to user accounts, including administrator privileges.
The Impact of CVE-2021-4073
With a CVSS base score of 9.8 (Critical), this vulnerability poses a significant threat. Attackers could impersonate any user on the site, potentially compromising sensitive data and performing unauthorized actions.
Technical Details of CVE-2021-4073
The following technical details provide more insight into CVE-2021-4073.
Vulnerability Description
The flaw in the social login function of RegistrationMagic lacked proper identity validation, allowing unauthorized users to log in as any existing user on the site.
Affected Systems and Versions
RegistrationMagic versions equal to and less than 5.0.1.7 are vulnerable to this authentication bypass issue.
Exploitation Mechanism
Attackers could exploit this vulnerability without any prior privileges, making it a critical concern for affected websites.
Mitigation and Prevention
To mitigate the risks associated with CVE-2021-4073, the following steps should be taken:
Immediate Steps to Take
Users are advised to update the RegistrationMagic plugin to version 5.0.1.8 or newer immediately to patch the vulnerability.
Long-Term Security Practices
Implementing proper authentication and access control mechanisms can prevent similar vulnerabilities in the future.
Patching and Updates
Regularly update plugins and software to ensure that known vulnerabilities are addressed promptly.