Follow-up to V9.1.4 (which covered only the syslog forwarder/listener): set
ctx.minimum_version = TLSVersion.TLSv1_2 on the remaining DECNET-owned mTLS
client contexts — AgentClient (_build_client + _fetch_peer_fingerprint),
UpdaterClient (_build_client + _fetch_peer_fingerprint), and the updater
executor's worker context. Pure hardening, no behavior change for TLS1.2+
peers (confirmed by the existing mTLS round-trip suites).
Deliberately EXCLUDED — hardening these would be counterproductive:
- templates/https/server.py, templates/rdp/server.py: honeypot listeners,
where looking weak/old is part of the deception.
- prober/tlscert.py: outbound TLS fingerprinting prober, which must speak
whatever the attacker's target offers.
Added a floor-assertion test (spies httpx.AsyncClient to capture the real
verify= context).
Auth (V2.1.1/V3.1.2, V2.1.3, V3.1.1):
- Pin JWT iss/aud/typ at mint and require+verify them at decode; revocation
(jti denylist + tokens_valid_from) still enforced.
- Change-password now requires min_length=12.
- SSE auth moves off JWT-in-URL to a single-use 60s opaque ticket
(POST /auth/sse-ticket); raw JWT in query no longer authenticates a stream.
Removed dead fail-open get_stream_user helper.
Egress (V5.1.1, V9.1.1/V14.1.3):
- Webhook delivery + CRUD reject SSRF destinations (private/loopback/link-local/
metadata, IPv4-mapped, multi-A-record) via resolved-IP validation, pin to the
vetted IP, and never auto-follow redirects. Opt-out via DECNET_WEBHOOK_ALLOW_PRIVATE.
- UpdaterClient pins the worker leaf cert SHA-256 against the stored per-host
fingerprint (fail closed on missing/mismatch); DECNET_VERIFY_HOSTNAME now
defaults True.
Hardening (V13.1.3, V4.1.4, V13.1.2):
- Rate-limit change-password (5/min), enroll-bundle (10/min), webhook-create
(20/min), host-delete (20/min) via the existing slowapi limiter.
- Correct false 'global auth middleware' comment; document enroll-bundle proxy
trust.
Correctness (BUG-7..11):
- BUG-7 unbound bus in finally; BUG-8 apply_ceiling clamps to min(base,ceiling);
BUG-9 commit before emit; BUG-10 multi-actor rearm for sub-threshold identities;
BUG-11 normalize naive timestamps to UTC.
Already-closed (no change): V14.1.1, V2.1.2/V3.1.3, V5.1.2. Tests added for
every fix; unanimous adversarial review.
