WordPress CVEs

Description

The WPCOM Member plugin for WordPress is vulnerable to authentication bypass via brute force in all versions up to, and including, 1.7.16. This is due to weak OTP (One-Time Password) generation using only 6 numeric digits combined with a 10-minute validity window and no rate limiting on verification attempts. This makes it possible for unauthenticated attackers to brute-force the verification code and authenticate as any user, including administrators, if they know the target's phone number, and the target does not notice or ignores the SMS notification with the OTP.

Affected WordPress components

• WPCOM Member Plugin · wpcom-member
  Confirmed match Active
  Up to and including 1.7.16
  View on WordPress.org

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

• whyun WPCOM Member — Up to and including 1.7.16

References

• plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/wpcom-member/tags/1.7.16/includes/class-sesstion.php#L29
• plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/wpcom-member/tags/1.7.16/includes/member-functions.php#L833
• plugins.trac.wordpress.org https://plugins.trac.wordpress.org/changeset/3411048/wpcom-member
• www.wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/4f02ee56-40bd-4132-92e1-e2897ff2a4c4?source=cve
• nvd.nist.gov Official NVD record