Login With OTP <= 1.4.2 - Authentication Bypass via Weak OTP
Vulnerability Description
The Login With OTP plugin for WordPress is vulnerable to authentication bypass in versions up to, and including, 1.4.2. This is due to the plugin generating too weak OTP, and there’s no attempt or time limit. This makes it possible for unauthenticated attackers to generate and brute force the 6-digit numeric OTP that makes it possible to log in as any existing user on the site, such as an administrator, if they have access to the email.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
Am I Vulnerable?
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Credits & Attribution
The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:
- István Márton
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/d3775d48-5985-475e-8fb9-c4c5fd044772?source=cve
- https://plugins.trac.wordpress.org/browser/otp-login/tags/1.4.2/lib/otpl-class.php#L293
- https://plugins.trac.wordpress.org/browser/otp-login/tags/1.4.2/lib/otpl-class.php#L317
- https://plugins.trac.wordpress.org/changeset/3216953/otp-login#file18
Affected Vendor
india-web-developer
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