0.2.26: security hardening from audit (P2/P3 fixes)

Address the security-auditor findings the user selected (items 2, 3, 4):

Default admin credentials (P2): remove the fixed `Ten31` default. First
boot now generates a strong random admin password (secrets.token_urlsafe),
records it 0600 at /data/.admin-password, and surfaces it once via a new
"Show Initial Admin Password" StartOS action (CLI `show-admin-password`).
The stored password is cleared when the admin is reset (CLI reset-password)
or self-changes it (change-password endpoint).

Login hardening (P2): add a per-IP in-memory sliding-window rate limiter
(10 failures / 5 min -> 429 + Retry-After) in ratelimit.py; run a dummy
argon2 verify when the user is unknown so timing can't enumerate usernames;
keep a single generic 401 for unknown-user and wrong-password.

Hardening (P3): server process now runs unprivileged -- Dockerfile adds
uid 10001 appuser; start.sh (still root) chowns the mounted /data then
drops via `setpriv` before exec'ing uvicorn. Spreadsheet imports are
size-capped via storage.read_capped (413 past MAX_UPLOAD_SIZE) in the
schedule, capital preview, and batch paths. batch_import no longer returns
raw exception text (generic per-file messages).

Verified in the packed amd64 container: PID1 uvicorn runs as uid 10001,
/data owned 10001 with 0600 secrets; generated admin password retrievable
via CLI and logs in (200); 11th bad login -> 429; admin reset clears the
stored password. Tests: test_auth_hardening.py (4). Full suite 21 passed;
frontend tsc + StartOS bundle clean.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

This commit is contained in:

Jonathan Kirkwood

2026-07-01 19:09:27 -05:00

co-authored by

Claude Opus 4.8

parent 025aff4fac

commit 69f12b0519

17 changed files with 324 additions and 23 deletions

									
										deploy/Dockerfile
									
		+5
		
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				@@ -34,6 +34,11 @@ RUN chmod +x ./start.sh

				# Data volume mount point

				RUN mkdir -p /data

				# Unprivileged account for the server process. The container still starts as root (see start.sh)

				# so it can chown the platform-mounted /data volume, then drops to this uid via setpriv.

				RUN groupadd --gid 10001 appuser \

				 && useradd --uid 10001 --gid 10001 --no-create-home --shell /usr/sbin/nologin appuser

				ENV TEN31_DB_PATH=/data/portal.db

				ENV TEN31_DOCS_DIR=/data/documents

				ENV TEN31_SESSION_SECRET=change-me