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fix(security): mobile select-all expansion and the Sentry tunnel SSRF - #2874
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The web list can send an `all-selected` sentinel instead of ids, meaning "everything matching the filters I am looking at". That only works because the web client also submits `currentSearchParams` so the server can rebuild the same set. Mobile has no select-all control and sends no filters — it hardcodes an empty `currentSearchParams`. So a sentinel reaching a mobile bulk endpoint expanded against an EMPTY filter: every matching row in the organization, unbounded and invisible to the caller. SELF_SERVICE holds `asset:custody` and `kit:custody`, so on the custody endpoints a restricted role could take custody of every available asset in the workspace in one request. Reject it at the schema instead of teaching the services to cope. A mobile client has no way to produce the sentinel legitimately; its presence means a hand-crafted request. The finding named one endpoint. The same shape was on six schemas across four: bulk-assign-custody, bulk-release-custody, bulk-update-location, and all three kit intents. One shared helper covers them, so a new mobile bulk endpoint cannot reintroduce it by copying a neighbour. Both new route tests were confirmed to return 200 and reach the write when the guard is removed.
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WalkthroughAdded shared mobile ID schemas and updated mobile routes to reject select-all sentinels and malformed bodies. Hardened the Sentry tunnel by pinning forwarding to the configured DSN and validating envelope DSNs. ChangesMobile ID validation
Sentry tunnel hardening
Estimated code review effort: 4 (Complex) | ~45 minutes Merge Risk: 🟡 Moderate · up to The PR narrows mobile bulk selection and pins Sentry forwarding to the server-configured destination, but it is not merge-ready yet because malformed keyless or nonnumeric DSNs still need to be rejected and the required checks have not completed. These bounded security and readiness issues should be resolved or explicitly accepted before merge. Sequence Diagram(s)sequenceDiagram
participant Client
participant MobileRoute
participant IDSchema
participant OperationService
Client->>MobileRoute: Send mobile JSON request
MobileRoute->>IDSchema: Safely validate assetId, assetIds, or kitIds
IDSchema-->>MobileRoute: Return validation result
alt Valid IDs
MobileRoute->>OperationService: Execute mobile operation
OperationService-->>MobileRoute: Return operation result
else Invalid body or sentinel
MobileRoute-->>Client: Return HTTP 400 ShelfError
end
sequenceDiagram
participant Client
participant SentryTunnel
participant ConfiguredTarget
participant Sentry
Client->>SentryTunnel: Submit envelope with DSN
SentryTunnel->>ConfiguredTarget: Resolve configured SENTRY_DSN
SentryTunnel->>SentryTunnel: Compare envelope DSN
alt Matching configured target
SentryTunnel->>Sentry: Forward to configured HTTPS endpoint
Sentry-->>SentryTunnel: Return response
SentryTunnel-->>Client: Return response
else Missing or mismatched target
SentryTunnel-->>Client: Return HTTP 404 or 403
end
🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
✨ Finishing Touches📝 Generate docstrings
🧪 Generate unit tests (beta)
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The four mobile bulk endpoints parsed their body with `.parse()`, so a validation failure threw a raw ZodError. `makeShelfError` has no branch for that, so it fell through to the unknown-error path: a CAPTURED 500 with the generic "Sorry, something went wrong" message. Verified empirically -- a raw ZodError through `makeShelfError` yields `status 500, shouldBeCaptured true`. That matters most for the select-all rejection this PR adds. A crafted request is an EXPECTED invalid input, and reporting each one as a server outage buries the signal in Sentry alongside real faults. Switch all four to `safeParse` and throw a non-captured 400 ShelfError, matching the pattern already used by `qr.claim.ts`, `qr.$qrId.ts` and `exchange.ts`. The route tests asserted `not.toBe(200)`, which passed on the 500 and so would never have caught this. Tightened to `toBe(400)`. Raised by Codex in review.
The bulk endpoints were fixed first; `/api/mobile/custody/assign` was missed
because a single-id field does not read as a bulk operation. It is one:
assetId: z.string().min(1) // accepts "all-selected"
...
assetIds: [assetId] // -> bulkCheckOutAssets
`["all-selected"]` satisfies `includes(ALL_SELECTED_KEY)` exactly as a longer
list does, and mobile hardcodes `currentSearchParams: ""`, so it expanded
against an EMPTY filter -- every available asset in the organization. Reachable
by SELF_SERVICE, which holds `asset:custody`.
Adds `mobileIdSchema` beside `mobileBulkIdsSchema` so the scalar shape has a
guard of its own rather than each endpoint hand-rolling a refine, and converts
the route to safeParse -> 400 to match its bulk siblings.
Swept every route that funnels an id into a sentinel-aware service. This was
the only remaining site: custody.release and the -quantity variants call
singular services, and the non-mobile `assetIds: [id]` sites go to createNotes
or getBookings, none of which read the sentinel.
Reported by parameter.ai on this PR, as an out-of-diff finding.
|
Confirmed and fixed in Verified the chain rather than taking it on faith: I went with a shared helper rather than an inline // ~/modules/api/mobile-bulk-ids.server
export function mobileIdSchema(field: string) { … } // scalar
export function mobileBulkIdsSchema(field: string) { … } // arrayThe route also moves to On your Rather than fix just the reported line, I swept every route that funnels an id into any of the 21 functions that read Regression coverage added to the existing |
The tunnel built its upstream URL from the DSN inside the CLIENT's envelope, so `url.hostname` was fully attacker-controlled. It set no `redirect` option, and it returned the upstream response body to the caller -- a full-read SSRF. The `https://` prefix the route hardcoded is not a defense. An attacker points the DSN at a public host they control, that host answers with a 302 to `http://169.254.169.254/latest/meta-data/...`, and fetch chases it. Verified against real sockets before writing the fix: the redirect was followed to a different host and the internal body came back to the caller. Stop deriving the destination from input. The server already knows the only Sentry project it may talk to -- its own SENTRY_DSN -- so the envelope's DSN is now only COMPARED against that, and the URL fetched is built entirely from server-side config. When SENTRY_DSN is unset there is no legitimate destination, so the route refuses rather than falling back to the envelope. This is deliberately stricter than `safeFetch` (~/utils/ssrf.server), which blocks private/reserved addresses but still permits any routable host. That is right for user-supplied image URLs, where arbitrary public hosts are the feature. Here they are not: one legitimate destination means an allow-list of one beats filtering the internet. `redirect: "manual"` closes the redirect leg. Comparison is on parsed URL components, never substrings -- covered for suffix (`evil-o123.ingest.sentry.io`), subdomain (`o123.ingest.sentry.io.evil.com`) and userinfo (`https://o123.ingest.sentry.io@evil.com/`) look-alikes. Tests assert on the URL passed to fetch, since that is the sink; a status-only test would pass while still reaching the attacker's host. All 8 security assertions were confirmed to fail against the pre-fix route. detail.dev finding D071. This also unblocks D053 (the tunnel is missing from publicPaths, so anonymous errors are lost): adding it there alone would have turned an authenticated SSRF into an unauthenticated one.
The parser accepted http: while `buildSentryEnvelopeUrl` pins https:. Not exploitable as written -- the client DSN is only ever compared, never used to build a URL -- but the asymmetry is a trap: the next editor to derive the scheme from the parsed target reintroduces plaintext egress. No behaviour is lost. The tunnel has always egressed over https, so an http DSN never actually reached a self-hosted http-only Sentry; such a deployment now fails closed with the "not configured" 404 instead of a failed fetch. Raised by the pre-commit security reviewer.
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Actionable comments posted: 1
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Inline comments:
In `@apps/webapp/test/routes-tests/api`+/mobile.custody.assign.test.ts:
- Around line 178-182: Update the regression test in the select-all sentinel
case to import and use the production ALL_SELECTED_KEY constant for assetId
instead of the hardcoded "all-selected" value, keeping the test synchronized
with the production contract.
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apps/webapp/app/modules/api/mobile-bulk-ids.server.test.tsapps/webapp/app/modules/api/mobile-bulk-ids.server.tsapps/webapp/app/routes/api+/mobile+/custody.assign.tsapps/webapp/test/routes-tests/api+/mobile.custody.assign.test.ts
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The invariant under test is "the sentinel is rejected", not "the string 'all-selected' is rejected". With the literal, renaming the constant would leave these tests passing while asserting nothing meaningful. CodeRabbit flagged one line; the same literal appeared at three call sites across two files. Both now import the constant, matching the sibling route tests (audits.bulk-actions, audits.start) and the unit test for the schema. Prose references to the wire value are left as-is -- they document what actually travels over HTTP.
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Inline comments:
In `@apps/webapp/app/utils/sentry-tunnel.server.ts`:
- Around line 35-40: Extend SentryIngestTarget and parseSentryDsn to retain the
DSN origin, including its port, and the configured path prefix alongside
projectId. Update buildSentryEnvelopeUrl to construct the endpoint from both
retained values, and update envelopeDsnMatches to compare both origin and
prefix. Add a forwarding test covering a prefixed DSN on a non-default port.
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apps/webapp/app/routes/api+/sentry-tunnel.tsapps/webapp/app/utils/sentry-tunnel.server.test.tsapps/webapp/app/utils/sentry-tunnel.server.tsapps/webapp/test/routes-tests/api+/sentry-tunnel.test.ts
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…y tunnel `SentryIngestTarget` stored `url.hostname`, which drops the port, and kept only the last path segment, which drops the base path a self-hosted Sentry is mounted under. So `https://key@sentry.example.com:8443/sentry/456` forwarded to `https://sentry.example.com/api/456/envelope/` -- a URL that does not exist on that deployment. Store `url.origin` (scheme + host + port) and the path prefix, compare both, and build `<origin><prefix>/api/<projectId>/envelope/`. The port loss is pre-existing, not a regression: the old code read `hostname` too. The prefix handling changed shape but stayed wrong -- it used to produce `/api/sentry/456/envelope/`, putting the prefix inside the api path. Shelf Cloud is root-mounted on the default port, so neither ever surfaced there. Security properties are unchanged. `origin` strips userinfo, so `https://ours@evil.com/` still yields `https://evil.com` and cannot masquerade as us, and it normalises host case. Taking the scheme from `origin` is safe because `parseSentryDsn` is the only way to obtain a target and it refuses anything but https. Two new negative cases pin this: our host on a different port, and our host under a base path we do not use. Raised by CodeRabbit.
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Inline comments:
In `@apps/webapp/app/utils/sentry-tunnel.server.test.ts`:
- Around line 30-58: Create a valid DSN test-data factory with realistic
defaults, then update the positive parseSentryDsn tests to use it with only
scenario-specific overrides for origin, port, base path, and projectId. Keep
malformed DSN values literal in negative tests where necessary, and avoid
hardcoded valid DSNs in the test cases.
In `@apps/webapp/app/utils/sentry-tunnel.server.ts`:
- Around line 35-52: Add a JSDoc block immediately before the exported
SentryIngestTarget type to document the purpose and role of the ingest target;
retain the existing field-level comments unchanged.
- Around line 100-104: Update the DSN validation before returning the target to
require a nonempty url.username and ensure projectId is numeric; return null for
keyless or nonnumeric DSNs. Add regression tests covering both invalid cases
while preserving valid DSN handling.
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apps/webapp/app/utils/sentry-tunnel.server.test.tsapps/webapp/app/utils/sentry-tunnel.server.tsapps/webapp/test/routes-tests/api+/mobile.bulk-assign-custody.test.tsapps/webapp/test/routes-tests/api+/mobile.custody.assign.test.ts
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- apps/webapp/test/routes-tests/api+/mobile.custody.assign.test.ts
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The key is mandatory per Sentry's DSN spec, so a string without one is not a DSN and should not become a usable destination. It is still not COMPARED -- it is public, it rotates, and origin/prefix/project id are what decide where bytes go. Accepting this required fixing six of the security tests. Their DSNs had no key, so once the check landed they were rejected for the missing key rather than the wrong host -- still green, but no longer testing the host comparison they exist to pin. All now carry a key, verified to parse successfully and be refused on origin: https://pubkey@evil.com/456 parsed: true origin: https://evil.com https://o123.ingest.sentry.io@evil.com/456 origin: https://evil.com Adds JSDoc to the exported SentryIngestTarget type per the repo convention. Deliberately NOT enforcing a numeric project id, which the same review suggested. Sentry's SDK spec calls it a string identifier that is only "usually an integer", so requiring digits would reject a spec-valid deployment. It buys nothing either: a client-supplied project id is only ever compared, never used to build a URL. Pinned by a test so the next reader does not "fix" it. Raised by CodeRabbit.
Two unrelated broken-access-control fixes from the detail.dev OSS scan, bundled
at the author's request so they land in one review cycle. They share no code —
read them as two PRs in one.
all-selectedsentinel org-wide1 — Mobile select-all expansion (D130)
A SELF_SERVICE user could take custody of every available asset in the
workspace in a single mobile API call — and the same for kits.
Found by the detail.dev OSS scan (finding D130). Fourth of the select-all
cluster, after #2867 (tags), #2869 (locations) and #2872 (bookings).
The bug
The web list can send an
all-selectedsentinel instead of ids, meaning"everything matching the filters I'm looking at". That contract works because
the web client also submits
currentSearchParams, so the server rebuilds thesame filtered set.
Mobile has no select-all control and sends no filters — it hardcodes an empty
value:
So a sentinel reaching a mobile bulk endpoint expanded against an empty
filter — every matching row in the organization.
Who can reach it:
bulk-assign-custodyandbulk-release-custodyrequireasset:custody; the kit intents requirekit:custody. SELF_SERVICE holdsboth. So this is a restricted role acting workspace-wide, not an admin doing
something merely unbounded.
bulk-update-locationneedsasset:update, which restricted roles don't hold —unbounded, but ADMIN/OWNER only.
Scope: the finding named one endpoint, there were seven sites
bulk-assign-custodybulk-release-custodybulk-update-locationkits.bulk-actionscustody.assignassetId, wrapped asassetIds: [assetId]The scalar one is the trap:
["all-selected"]satisfiesincludes(ALL_SELECTED_KEY)exactly as a longer list does, so a single-assetendpoint expands org-wide just as readily as a bulk one. It was found by
parameter.ai on this PR after the first six were fixed — a single-id field
simply does not read as a bulk operation.
mobileIdSchemanow guards thatshape beside
mobileBulkIdsSchema.I then swept every route funnelling an id into any of the 21 functions that
read
ALL_SELECTED_KEY. This was the last one:custody.releaseand the-quantityvariants call singular services, and the remainingassetIds: [id]call sites go tocreateNotes/getBookings, neithersentinel-aware.
The fix
Reject the sentinel at the schema rather than teaching each service to cope.
A mobile client has no way to produce it legitimately — its presence means a
hand-crafted request.
One shared helper covers all six sites, so a new mobile bulk endpoint can't
reintroduce this by copying a neighbour.
Why reject rather than support
Making mobile support select-all would mean forwarding real filters from the
client and trusting them — a much larger surface, for a feature the mobile UI
doesn't offer. Refusing is the smaller and more honest change.
Notes from verifying
The kit endpoints already carried comments acknowledging that mobile sends no
filters, and that the resolved set is therefore "every kit in the organization".
The release path had also gained an ownership guard from the earlier
2f20bbd85fix. So the shape was known — what was missing is that the sentinelshould never have been accepted in the first place, which closes it for the
assignintent too, where no ownership guard applies.Not a breaking change for the companion app
The obvious risk in rejecting an input is breaking a client that legitimately
sends it. Checked before and after writing the fix:
all-selectedorALL_SELECTEDanywhere inapps/companion/.lib/api/custody.ts,lib/api/kits.ts) take explicitassetIds: string[]/kitIds: string[]built from scanner selections.So the sentinel cannot arise from the shipped app — only from a hand-crafted
request, which is exactly what this refuses. No companion release is needed.
Tests
app/modules/api/mobile-bulk-ids.server.test.ts(7) — sentinel alone, sentinelmixed with real ids, empty list, the message naming its field, and that an id
merely containing the string is still accepted.
mobile.bulk-assign-custody.test.ts(+2) — end-to-end: a crafted select-allrequest is refused and
bulkCheckOutAssetsis never called.mobile.custody.assign.test.ts(+2) — the same, for the scalar field. Addedto the existing suite; its two prior tests still pass unchanged.
Both route tests were confirmed to return
200and reach the write with theguard removed.
11 existing mobile bulk route tests still pass.
2 — Sentry tunnel SSRF (D071)
/api/sentry-tunnelbuilt its upstream URL from the DSN inside the client'sown envelope, so the destination host was fully attacker-controlled, and it
returned the upstream response body to the caller. That is a full-read SSRF.
Found by the detail.dev OSS scan (finding D071).
The bug
The hardcoded
https://is not a defenseIt only constrains the first hop, and the route set no
redirectoption, sofetchfollows redirects by default:302 → http://169.254.169.254/latest/meta-data/….fetchchases it — cross-protocol, into link-local space.I verified this against real sockets before writing the fix, rather than
taking the report's word for it:
Who can reach it: any authenticated user — the route is behind the session
middleware but has no further gate. See the D053 note at the bottom.
The fix
Stop deriving the destination from input at all.
The server already knows the only Sentry project it may talk to — its own
SENTRY_DSN. So the envelope's DSN is now only compared against that, andthe URL we fetch is built entirely from server-side config:
Fails closed throughout: an unparseable DSN yields
null, and an unsetSENTRY_DSNrefuses to proxy rather than falling back to the envelope's value —that fallback is the bug.
Why not
safeFetch?The repo already has an SSRF guard (
~/utils/ssrf.server, fromGHSA-xgrm-8w6v-mvjg). It is the wrong tool here on both counts:
envelope POST.
globally-routable host. That is the right boundary for user-supplied image
URLs, where arbitrary public hosts are the feature. Here they are not — leaving
it as an open relay that POSTs attacker bytes from our IP.
One legitimate destination means an allow-list of one beats filtering the
internet.
redirect: "manual"then closes the redirect leg as defense in depth.Comparison is on parsed components, never substrings
Host matching by
startsWith/endsWith/includesis bypassable from bothends, so the check compares
URLcomponents. Covered by tests:evil-o123.ingest.sentry.ioo123.ingest.sentry.io.evil.comhttps://o123.ingest.sentry.io@evil.com/evil.com999Self-hosted deployments
The destination is now the full
origin(scheme + host + port) plus thebase path the instance is mounted under. An earlier revision of this PR stored
hostnameand the last path segment only, which was still wrong for aself-hosted Sentry:
https://key@sentry.example.com:8443/sentry/456would haveforwarded to
https://sentry.example.com/api/456/envelope/.To be precise about what is and isn't a regression — the port was dropped by
the pre-fix code too (it also read
hostname), and the prefix was mishandleddifferently there (
pathname.replace("/", "")strips only the first slash,so it produced
/api/sentry/456/envelope/). Neither version produced the rightURL; this one does. Shelf Cloud is root-mounted on the default port, so this
never surfaced in production.
Caught by CodeRabbit — thanks.
Sweep
Per the house rule that this class travels in packs, I grepped for other
server-side
fetchcalls with an interpolated host. This was the only one —the CSV
imageUrlpath already goes throughsafeFetch.Tests
app/utils/sentry-tunnel.server.test.ts(22) — DSN parsing and thehost/project comparison, including every look-alike above.
test/routes-tests/api+/sentry-tunnel.test.ts(12) — end-to-end.The route tests assert on the URL passed to
fetch, because that is thesink. A test that only checked the response status would pass while the request
still went to the attacker's host.
All 8 security assertions were confirmed to fail against the pre-fix route
and pass after — verified by restoring the old file, not by assumption.
Follow-ups (not in this PR)
publicPaths, so anonymous clienterrors are 302'd to
/loginand lost. That fix is now safe to make; doing itbefore this one would have converted an authenticated SSRF into an
unauthenticated one.
cap. I deliberately left one out here: Sentry envelopes carrying replays or
large stack traces can be big, and guessing a limit risks silently dropping
legitimate error reports — a regression that would be invisible.
Summary by CodeRabbit
Bug Fixes
Tests