The editor is about to be opened to strangers: a post on Reddit and a
guest access (#428). nginx served the whole workspace and ran every PHP
file in it, the API let anybody guess passwords as fast as they liked,
and one account could fill the disk.
- nginx (shared web stack, outside this repo, backup in
/root/config-backup-20261015/) hands out only the two pages, dist/,
public/brand/, the uploads by kind and ending, and api/index.php.
Everything else under /feuerwerk/ is a 404.
- PHP behind it has display_errors off and no X-Powered-By. Plain HTTP
forwards to HTTPS, the API refuses it.
- Headers: a Content-Security-Policy without inline code or eval,
nosniff, frame-ancestors, HSTS, Referrer-, Permissions-, COOP, CORP.
- vite.config.ts writes the same policy into the built pages, so CI
runs the whole suite under it. Pixi gets by without eval through
pixi.js/unsafe-eval. The page CSS left its inline style for a file.
- The harness fails a module for anything the policy refuses, from
Chrome's log and from the page's securitypolicyviolation event.
- LoginThrottle: five wrong passwords from one address within 15
minutes, and it gets 429 until 15 minutes after the last of them.
The address is the last X-Forwarded-For entry, the Brandmauer's own.
- Quota: 1 GB per account for uploads, projects and snapshots. Only a
write that grows the account is refused (413). Admins have no limit.
- A write whose Sec-Fetch-Site says another site is refused (403).
- The session cookie carries Secure, nginx passes HTTPS on.
- showFailure puts the message in as text, not as HTML.
- Every PHP script outside api/ stops unless it runs on the command
line.
- The video worker sees the checkout read-only and can only write
data/videos. No capabilities, 2 GB and 256 processes at most.
- tests/php/rights.test.php runs the API under php -S on a scratch
directory and asks every route as signed out, owner, stranger and
admin. A route named in api/index.php but missing in the matrix
fails it. limits.test.php covers the brake and the quota.
Findings:
- tmp/ was readable from outside, with 79 copies of project files.
Closed on 15.10. at 20:02 with chmod 750. The log back to 11.10.
shows only our own requests.
- Port 8080 is bound on 0.0.0.0, so the LAN could reach nginx past the
Brandmauer. Left as it is: the web stack is not this project's.
- npm audit finds nothing in what is shipped. Dev tools (vitest,
brace-expansion, source-map-js) have advisories, not touched here.
Tests: check 313 files / 4843 tests. PHP limits 21, rights 60,
accounts 56, snapshots 15, releases 20, files 46 (videos 50/51, no
ffmpeg in the web container). e2e on stein2, atx was off: 34+38+41
197/198, the one red check (a click in 41) passes with 41 alone,
27/27. 67 misses frames at 1080p on stein2 with and without this.
Path list from outside: 10 served, 26 refused. ZAP baseline against
the live site: nothing High or Medium under /feuerwerk/.
Counter-checks: rights.test.php without the cross-site guard, the
quota, the brake, the admin check of users, or with an undocumented
route fails each time. A policy without wasm-unsafe-eval fails e2e 41
with the harness's own CSP line.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
adminandClaude Opus 5.5
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