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5258e175a1
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The login page, failed logins, redirects, and rate-limit/error pages could be stored by the browser (Symfony's default 'no-cache, private' still permits storage — it only requires revalidation). Older Safari builds may then replay a stale pre-auth response on refresh, appearing to log the user back out, or show a previous session after logging in again. - SecurityHeadersListener: send strict anti-caching headers on non-2xx responses only (no-store/no-cache/must-revalidate/proxy-revalidate, max-age=0, s-maxage=0 + Pragma, Expires, Surrogate-Control, Vary: *). 2xx grants (already-authenticated / public access) are consumed by Caddy's forward_auth check and never reach the browser, and protected services' own cache headers must stay untouched. - templates/_script.html.twig: fetch() with cache: 'no-store'; follow redirects with location.replace() to keep the login page out of history and the back-forward cache. - docs/Caddyfile: reusable (preauth_no_store) snippet imported into every forward_auth block, using header_down so the guarantee holds at the edge (verified: replaces conflicting upstream values, leaves service responses alone). - tests: unit coverage for the listener and functional coverage for the full HTTP kernel (login/failure/redirect/rate-limit not cacheable; 200 grants untouched); asserts the rendered page carries the JS changes. - readme/CHANGELOG updates.
78 lines
2.5 KiB
Caddyfile
78 lines
2.5 KiB
Caddyfile
# preauth example Caddyfile
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# --- anti-caching guard for the login flow ---
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# The login page, failed logins, redirects, and rate-limit pages must never
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# be stored or replayed by a browser or intermediate cache. If they are,
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# an aggressive cache (notably older Safari) can resurrect a stale pre-auth
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# response — appearing to log a user back out after a refresh. preauth
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# sends these headers itself; mirroring them here with `header_down` keeps
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# the guarantee at the edge. Import this snippet inside every `forward_auth`
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# block:
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#
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# forward_auth preauth { ...; import preauth_no_store }
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#
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# Note: 2xx auth responses are consumed by Caddy's forward_auth check and
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# never reach the browser, and the protected service's own responses are
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# not affected — so the cache headers of your services are left alone.
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(preauth_no_store) {
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header_down Cache-Control "no-cache, no-store, must-revalidate, proxy-revalidate, max-age=0, s-maxage=0"
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header_down Pragma "no-cache"
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header_down Expires "0"
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header_down Surrogate-Control "no-store"
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header_down Vary "*"
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}
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# example of securing full service
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# TODO replace domain and service name and port
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service.example.com {
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forward_auth preauth {
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uri {uri}
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copy_headers Remote-User
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import preauth_no_store
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}
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reverse_proxy service-container:80
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}
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# you can choose to only restrict select paths
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# or any other Caddy match criteria, if desired
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# IE: https://protected.example.com/secure/
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protected.example.com {
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# note any request that does not start with "/secure/" is NOT protected
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forward_auth /secure/* preauth {
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uri {uri}
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copy_headers Remote-User
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import preauth_no_store
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}
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reverse_proxy protected-service:9000
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}
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# optionally, if you want to use a subdomain for central preauth
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# set SUBDOMAIN_REDIRECT to true
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# and AUTH_SUBDOMAIN to match the subdomain you use here
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auth.example.com {
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reverse_proxy preauth
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}
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# --- public rate-limited access (v1.1) ---
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# Configure PUBLIC_PATHS env var to specify which paths are public.
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# Example: PUBLIC_PATHS=/public/**
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# Unauthenticated visitors to public paths are rate-limited separately
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# from login attempts. Authenticated users bypass the public rate limiter.
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#
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# This example protects all of Gitea except /public/** which is
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# publicly accessible but rate-limited (e.g., 100 req/min, 500 req/hr).
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git.example.com {
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forward_auth preauth {
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uri {uri}
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copy_headers Remote-User
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import preauth_no_store
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}
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reverse_proxy gitea:3000
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}
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# In preauth's .env:
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# PUBLIC_PATHS=/public/**
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# PUBLIC_BURST_COUNT=100
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# PUBLIC_BURST_TIME=60
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# PUBLIC_UPPER_COUNT=500
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# PUBLIC_UPPER_TIME=3600
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