Scrum iter 11 flagged crates/gateway/src/tools/service.rs with two
95%-confidence critical failures:
CF-1: "Direct SQL execution from model-provided parameters without
explicit validation or sanitization" (line 68, 95% conf)
CF-2: "No permission check performed before executing SQL query;
access control is bypassed entirely" (line 102, 90% conf)
CF-1 is the real one — same security gap as queryd /sql had before
P42-002 (9cc0ceb). Tool invocations build SQL from a template +
model-provided params, then state.query_fn.execute(&sql) runs it.
No truth-gate check between build and execute meant an adversarial
model could emit DROP TABLE / DELETE FROM / TRUNCATE inside a param
and bypass queryd's gate by routing through the tool surface instead.
Fix mirrors the queryd SQL gate exactly:
- ToolState grows an Arc<TruthStore> field
- main.rs constructs it via truth::sql_query_guard_store()
(shared default — same destructive-verb block as queryd)
- call_tool evaluates the built SQL against "sql_query" task class
BEFORE executing
- Any Reject/Block outcome → 403 FORBIDDEN + log_invocation row
marked success=false with the rule message
CF-2 (access control) is P13-001 territory — needs AccessControl
wiring into queryd first, still open. Flagged in memory.
Workspace warnings still at 0. Pattern is now:
queryd /sql → truth::sql_query_guard_store (9cc0ceb)
gateway /tools → truth::sql_query_guard_store (this commit)
execution_loop → truth::default_truth_store (51a1aa3)
All three surfaces that pipe SQL or spec-shaped data through to the
substrate now gate it. Any new SQL-executing surface should follow
the same pattern.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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