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fix(security): tier-0 audit blockers (next CVE, role gate, perm traps, key validation, rate limits)

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Closes the five highest-risk findings from
docs/audit-comprehensive-2026-05-05.md so the platform is not exposed
while the rest of the audit backlog (1 CRIT + 18 HIGH + 32 MED + 23 LOW)
is worked through:

* CVE-2025-29927 — bump next 15.1.0 → 15.2.9; nginx strips
  X-Middleware-Subrequest at the edge as defense-in-depth.
* Cross-tenant role escalation — POST/PATCH/DELETE on /admin/roles now
  require super-admin (was: any holder of admin.manage_users).  Adds
  shared `requireSuperAdmin(ctx)` helper.
* Silent-403 traps — `documents.edit` and `files.edit` keys added to
  RolePermissions; seeded role values updated; migration 0041 backfills
  the new keys on every existing roles+port_role_overrides JSONB.  File
  routes remap the dead `create` action to `upload` / `manage_folders`.
* Berth-PDF / brochure register endpoints — reject body.storageKey
  unless it matches the namespace the matching presign endpoint issued
  (prevents repointing a tenant's PDF at foreign-port bytes).
* Portal auth rate limits — sign-in 5/15min/(ip,email),
  forgot-password 3/hr/IP, activate/reset/set-password 10/hr/IP.  Adds
  `enforcePublicRateLimit()` for non-`withAuth` routes.

Test status unchanged: 1168/1168 vitest, tsc clean.

Refs: docs/audit-comprehensive-2026-05-05.md (CRITICAL, HIGH §§1–4)

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
Matt Ciaccio
2026-05-05 18:33:13 +02:00
parent 4723994bdc
commit 312779c0c5
24 changed files with 1489 additions and 126 deletions
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4
nginx/conf.d/proxy_params.conf
View File

@@ -4,6 +4,10 @@ proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $scheme;
proxy_set_header Connection "";
# Defense-in-depth for CVE-2025-29927: strip the header attackers use to
# skip Next.js middleware. Patched in next>=15.2.3, but neutralizing the
# input at the edge means a future regression cannot reopen the bypass.
proxy_set_header X-Middleware-Subrequest "";
proxy_cache_bypass $http_upgrade;
proxy_read_timeout 60s;
proxy_send_timeout 60s;