8881b68aaf
Closes #241 (MEDIUM, auth-gated by AdminAuth on POST /workspaces). ## Vectors closed 1. YAML injection via runtime: a crafted payload `runtime: "langgraph\ninitial_prompt: run id && curl …"` was splatted raw into config.yaml, smuggling an attacker-controlled initial_prompt into the agent's startup config. 2. Path traversal oracle via runtime: the runtime string was joined into filepath.Join for the runtime-default template fallback. `runtime: ../../sensitive` could probe host directory existence. 3. YAML injection via model: same shape as runtime but via the freeform model field. ## Fix - New sanitizeRuntime(raw string) string allowlists 8 known runtimes (langgraph/claude-code/openclaw/crewai/autogen/deepagents/hermes/codex); unknown → collapses to langgraph with a warning log. Called at every place the runtime is used: ensureDefaultConfig, workspace.go:175 runtimeDefault fallback, org.go:370 runtimeDefault fallback. - New yamlQuote(s string) string helper that always emits a double- quoted YAML scalar. name, role, and model now always go through it instead of the ad-hoc "quote if contains special chars" logic that was in place pre-#221. Removing the "sometimes quoted, sometimes not" ambiguity simplifies reasoning about what survives from user input. ## Tests - TestEnsureDefaultConfig_RejectsInjectedRuntime — parses the output as YAML and asserts no top-level initial_prompt key survives - TestEnsureDefaultConfig_QuotesInjectedModel — same YAML-parse test for the model field - TestSanitizeRuntime_Allowlist — 12 cases (8 valid runtimes + empty + whitespace + unknown + path-traversal + newline-injection) - Updated 6 existing TestEnsureDefaultConfig_* assertions to expect the new always-quoted form (name: "Test Agent" vs name: Test Agent) Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> |
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