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fix(2fa): issue MFA codes with two_factor.otp_lifetime, not the client's passwordless lifetime - #182
The MFA email code inherited the OAuth2 client's passwordless otp_lifetime whenever the login was started from a client. That setting allows 0 ("never expires" for passwordless login); on dev the "Speaker Mgmt" client has it, so every MFA code issued through it came out with lifetime 0. The login screen renders a 0 lifetime as already expired and keeps VERIFY disabled, and every resend (HTTP 200, lifetime 0 again) left it there. Server-side those codes never expired at all.
EmailOTPMFAChallengeStrategy now always issues the code with two_factor.otp_lifetime (env TWO_FACTOR_OTP_LIFETIME, default 600 s), passed to createOTPFromPayload() as an explicit override; a non-positive value logs a warning and falls back to 600.
OTPFactory::buildFromPayload / ITokenService::createOTPFromPayload gain an optional $lifetime_override (default null, existing callers and passwordless login unchanged).
Login screen: a failed resend (429 / 500) now shows the error inline under the code boxes, like verify failures do, and releases the "resend code" link instead of silently counting down.
The pending challenge session lives max(two_factor.session_ttl, effective otp_lifetime) (AbstractMFAChallengeStrategy::resolvePendingSessionTtl()), so neither setting can expire the challenge before the code.
Tests
tests/unit/MFA/EmailOTPMFAChallengeStrategyTest.php: the config lifetime is forced even with a client present (getOtpLifetime() never called); 0 falls back to 600.
tests/TwoFactorLoginFlowTest.php::testOIDCFlowMFACodeIgnoresClientPasswordlessLifetime: OIDC login through a client with otp_lifetime = 0 issues a 600 s code, persists it in the session and returns it on resend.
Jest: onResend2FA success / 429 / 500 / session-expired paths; TwoFactorForm revives an expired code on codeVersion bump, keeps the cooldown on success and releases it on failure.
docker exec idp-app vendor/bin/phpunit --testsuite "Two Factor Authentication Test Suite"
docker exec idp-app vendor/bin/phpunit tests/OTPModelTest.php
npx jest
…t's passwordless lifetime
A login started from an OAuth2 client made OTPFactory take the client's
passwordless otp_lifetime for the MFA code. With 0 ("never expires" for
passwordless login) the login screen rendered the code as already
expired, kept VERIFY disabled and no resend could recover it (every
resend returned lifetime 0 again), while the code itself never expired
server-side.
- EmailOTPMFAChallengeStrategy passes two_factor.otp_lifetime (env
TWO_FACTOR_OTP_LIFETIME, default 600) as an explicit override;
non-positive values fall back to 600 with a warning.
- OTPFactory::buildFromPayload / ITokenService::createOTPFromPayload take
an optional lifetime override (default null, existing callers unchanged).
- Login screen: failed resends (429/500) are shown inline and release the
resend link instead of silently counting down.
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Walkthrough
MFA challenges now use a configurable OTP lifetime with a 600-second fallback. The login form displays resend errors inline and resets the resend cooldown after a rejected request.
two_factor.otp_lifetime defaults to 600 seconds. The strategy resolves this value, falls back to 600 when it is non-positive, and passes it through the token service to the OTP factory. Tests cover configured and fallback lifetimes, including an OIDC client with a passwordless OTP lifetime of zero.
Handle resend results in the login form resources/js/login/components/two_factor_form.js, resources/js/login/login.js, tests/js/login/components/two-factor-form.test.js, tests/js/login/login.mfa.test.js
The login form displays resend failures inline and releases the cooldown after a rejected resend while mounted. Tests cover successful, rate-limited, failed, and expired-session responses, plus cooldown behavior.
With a longer configured code lifetime, users can be told their MFA session has expired while their code is still valid. Align or validate the session lifetime before merging.
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The title accurately describes the main change to the MFA code lifetime.
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🟡 Changes recommended
An older resend request’s rejection handler can clear the cooldown for a newer pending request, enabling further resends before that request completes.
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Valid scenario, leaving it as is. It needs a resend request that is still pending after the 30-second cooldown ran out (the XHR timeout is 60 s), a second click, and the abort of the first request landing while the second is in flight. The worst outcome is the link becoming clickable a few seconds early while the server-side rate limit (5 per 15 min) still bounds the resends. The screen state the second request produces (200 with a fresh countdown, or an inline error) replaces the transient one within seconds. If this shows up in practice, the fix is to keep the latest resend promise in a ref and release the cooldown only when the rejected promise is that one.
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Actionable comments posted: 1
Fix comments: Fix CodeRabbit comments on this PR
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Inline comments:
Review comments at @config/two_factor.php:
- Line 65: Update the otp_lifetime configuration and its effective session-TTL
handling so the pending challenge remains valid for the full effective OTP
lifetime, including code issuance time. When TWO_FACTOR_SESSION_TTL is unset or
shorter, ensure the effective session TTL exceeds the effective OTP lifetime;
preserve configured values when they already satisfy this requirement.
---
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two_factor.session_ttl and two_factor.otp_lifetime were independent
knobs with the same default: raising the code lifetime (or lowering the
session TTL) made getPendingState() expire the challenge while the code
and its UI countdown were still valid.
- resolveOtpLifetime() moves to AbstractMFAChallengeStrategy.
- New resolvePendingSessionTtl() = max(session_ttl, effective otp
lifetime); getPendingState() uses it.
… time
issueChallenge() wrote 2fa_pending_at before creating and mailing the
code, so a slow issuance left the code alive for a few seconds after the
pending session had expired. The timestamp is now written after the code
exists and set to its created_at, the same clock isAlive() and the UI
countdown use. A failed issuance no longer leaves an orphan pending state.
The override exists so MFA codes always expire; accepting 0 would rebuild
the never-expiring code it was added to prevent, and a silent fallback
could land on a client's 0 again.
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Summary
The MFA email code inherited the OAuth2 client's passwordless
otp_lifetimewhenever the login was started from a client. That setting allows0("never expires" for passwordless login); on dev the "Speaker Mgmt" client has it, so every MFA code issued through it came out with lifetime 0. The login screen renders a 0 lifetime as already expired and keeps VERIFY disabled, and every resend (HTTP 200, lifetime 0 again) left it there. Server-side those codes never expired at all.EmailOTPMFAChallengeStrategynow always issues the code withtwo_factor.otp_lifetime(envTWO_FACTOR_OTP_LIFETIME, default 600 s), passed tocreateOTPFromPayload()as an explicit override; a non-positive value logs a warning and falls back to 600.OTPFactory::buildFromPayload/ITokenService::createOTPFromPayloadgain an optional$lifetime_override(defaultnull, existing callers and passwordless login unchanged).Base branch is
feat/mfa-phase1---migrations--and--interfaces(#125). SDS amendment: ftn-docsnsklz rev 2.7 (https://github.com/fntechgit/ftn-docsnsklz/pull/182).Config
two_factor.otp_lifetimeTWO_FACTOR_OTP_LIFETIMEThe pending challenge session lives
max(two_factor.session_ttl, effective otp_lifetime)(AbstractMFAChallengeStrategy::resolvePendingSessionTtl()), so neither setting can expire the challenge before the code.Tests
tests/unit/MFA/EmailOTPMFAChallengeStrategyTest.php: the config lifetime is forced even with a client present (getOtpLifetime()never called); 0 falls back to 600.tests/TwoFactorLoginFlowTest.php::testOIDCFlowMFACodeIgnoresClientPasswordlessLifetime: OIDC login through a client withotp_lifetime = 0issues a 600 s code, persists it in the session and returns it on resend.onResend2FAsuccess / 429 / 500 / session-expired paths;TwoFactorFormrevives an expired code oncodeVersionbump, keeps the cooldown on success and releases it on failure.