wiki: record what the security sweep did not cover !286

merged merged by cmc on 2026-09-06 18:49 UTC · krz/gitbay:sweep-149 into main

1 file changed, +26 −0

Layout: unified · split

.gitbay/wiki/Threat-Model.org +26

	@@ -141,6 +141,32 @@ Treat the runner host as executing untrusted code: keep it off the
141	daemon's host where the database lives, or scope it to repositories	141	daemon's host where the database lives, or scope it to repositories
142	whose writers you trust.	142	whose writers you trust.
143		143
		144	* What has not been audited
		145
		146	The 2026-09 sweep (krz/gitbay#149) read this repository against the
		147	claims above. Its two findings — review verdicts from accounts without
		148	write access deciding merge gates (#147), and control commands having no
		149	write rate limit while the API had one (#148) — are fixed, as is #173,
		150	found afterwards in the same milestone. What it did not reach, and why,
		151	is recorded here rather than in a closed issue:
		152
		153	- The host. systemd sandboxing, sshd on 2222, the firewall,
		154	unattended-upgrades, fail2ban, disk and file modes, restic append-only
		155	credentials. Reading production configuration is a separate exercise
		156	from auditing the source, and needs doing against bay1.
		157	- The supply chain beyond =govulncheck=. No review of what the
		158	dependency set is, who maintains it, or what a compromised release of
		159	any of it would reach.
		160	- The runner host as an execution environment. Nobody has tried to
		161	escape what is there. #144 covers the missing isolation.
		162	- Timing and traffic analysis. Token comparison is a hash index lookup
		163	by design, but nothing has been measured.
		164	- Denial of service by resource exhaustion beyond rate: large pushes,
		165	pathological diffs, deep histories, zip bombs in LFS.
		166
		167	A sweep is a point in time. This section says what a reader should not
		168	assume has been checked.
		169
144	* Residual risks, accepted	170	* Residual risks, accepted
145		171
146	- External images in rendered READMEs and profile about text load from	172	- External images in rendered READMEs and profile about text load from