CVE-2020-9455:Authentication Bypass in RegistrationMagic WordPress Plugin

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The RegistrationMagic WordPress plugin through version 4.6.0.3 contains an authorization vulnerability that allows authenticated users with minimal privileges to send arbitrary emails on behalf of the website. The vulnerability exists in the class_rm_user_services.php file, specifically in the send_email_user_view function, which fails to properly validate user permissions before allowing email sending capabilities.

Overview

RegistrationMagic is a popular WordPress plugin that provides custom registration form building capabilities. The vulnerability (CVE-2020-9455) is classified as CWE-862 (Missing Authorization), allowing users with minimal privileges to bypass authorization checks and send emails that appear to come from the website. This could be exploited for phishing attacks, spam distribution, or social engineering by leveraging the trusted domain of the affected website. The issue affects all versions of the plugin up to and including 4.6.0.3.

Remediation

To address this vulnerability, website administrators should:

  1. Update the RegistrationMagic plugin to version 4.6.0.4 or later immediately
  2. Review sent emails for any suspicious activity
  3. Consider implementing additional email security measures such as SPF, DKIM, and DMARC
  4. Audit user accounts and permissions to ensure only trusted users have access to the WordPress dashboard
  5. If you cannot update immediately, consider temporarily disabling the plugin until the update can be applied

References

  1. WordPress Plugin Repository: https://wordpress.org/plugins/custom-registration-form-builder-with-submission-manager/#developers
  2. WPVulnDB Entry: https://wpvulndb.com/vulnerabilities/10116
  3. Wordfence Security Advisory: https://www.wordfence.com/blog/2020/03/multiple-vulnerabilities-patched-in-registrationmagic-plugin/
  4. MITRE CWE-862: https://cwe.mitre.org/data/definitions/862.html

Industry ExposureMost to least
This section illustrates the prevalence of a specific Common Vulnerabilities and Exposures (CVE) across various industries based on customer reports. The ranking displays industries from the most to least affected by this particular vulnerability, offering valuable insight into where this CVE has been most frequently observed. This information can help organizations within these sectors prioritize their security efforts, understand their relative risk exposure compared to their peers, and focus remediation strategies where they are most needed. By understanding the industry-specific impact, organizations can make more informed decisions regarding patching, resource allocation, and overall risk management related to this CVE.

  1. Accommodation & Food Services
    Accommodation & Food Services
  2. Administrative, Support, Waste Management & Remediation Services
    Administrative, Support, Waste Management & Remediation Services
  3. Agriculture, Forestry Fishing & Hunting
    Agriculture, Forestry Fishing & Hunting
  4. Arts, Entertainment & Recreation
    Arts, Entertainment & Recreation
  5. Construction
    Construction
  6. Educational Services
    Educational Services
  7. Finance and Insurance
    Finance and Insurance
  8. Health Care & Social Assistance
    Health Care & Social Assistance
  9. Information
    Information
  10. Management of Companies & Enterprises
    Management of Companies & Enterprises
  11. Manufacturing
    Manufacturing
  12. Mining
    Mining
  13. Other Services (except Public Administration)
    Other Services (except Public Administration)
  14. Professional, Scientific, & Technical Services
    Professional, Scientific, & Technical Services
  15. Public Administration
    Public Administration
  16. Real Estate Rental & Leasing
    Real Estate Rental & Leasing
  17. Retail Trade
    Retail Trade
  18. Transportation & Warehousing
    Transportation & Warehousing
  19. Utilities
    Utilities
  20. Wholesale Trade
    Wholesale Trade

Focus on What Matters

  1. See Everything.
  2. Identify True Risk.
  3. Proactively Mitigate Threats.

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