Improper Authentication Bypass in pH7Builder Social Dating CMS

Executive Summary

This vulnerability affects pH7Builder (pH7 Social Dating CMS) versions before 18.5.0. It allows attackers to bypass two-factor authentication by submitting unlimited 6-digit TOTP verification codes without rate limiting. Attackers with a valid password can repeatedly guess codes to gain unauthorized access to accounts.

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Detection Guidance

Check for repeated failed 2FA attempts in logs for VerificationCodeFormProcess.php. Monitor for multiple 6-digit code submissions from the same IP or account within a short timeframe. Look for successful logins after a high number of failed attempts.

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Impact Analysis

If you use pH7Builder before version 18.5.0, an attacker who knows your password could bypass 2FA and take over your account. This could lead to unauthorized access to personal data, account misuse, or further compromise of your system.

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Compliance Impact

This vulnerability could lead to unauthorized access to sensitive user data, violating GDPR's data protection requirements and HIPAA's security rules for protected health information. Organizations may face compliance penalties if user data is compromised due to this flaw.

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Mitigation Strategies

Upgrade pH7Builder to version 18.5.0 or later to apply the rate-limiting fix. If upgrading is not possible, implement IP-based rate limiting for 2FA attempts manually. Review logs for signs of brute-force attempts and block suspicious IPs.

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