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Advisories

ZITADEL before 4.17.1 Unauthenticated MFA Enrollment via Login V1 Init Handlers

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severity
high
date
Affecting

  • zitadel >= 0, < 4.17.1

  • zitadel >= 0, < 3.4.15

CWE
  • CWE-287 Improper Authentication
CVSS
8.8
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N
Credit
grvijayan, livio-a, lucasdodgson, AdamKorcz
Description
ZITADEL 3.x before 3.4.15 and 4.x before 4.17.1 contains a missing authentication flaw in the hosted Login V1 UI, whose second-factor enrollment and initialization handlers act on an identify-only session before any primary factor is verified. Attackers knowing only a victim's login name can enroll attacker-controlled TOTP, OTP-SMS, OTP-Email, or U2F factors, overwrite the verified phone number, and enumerate users through discrepant errors.

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