Kjell Tore Guttormsen
6bca3fbf00
Step 12 of v3.4.1 plan. Surgical line-by-line generalization of references to the ultra-cc-architect plugin (no longer publicly distributed): - CLAUDE.md: 8 hits → "opt-in upstream architect plugin (not bundled)" - README.md: 9 hits including bare slug at line 646 (removed entirely); rephrased to "no longer publicly distributed" with the architecture/ filesystem slot still supported by /ultraplan-local - SECURITY.md: 1 hit → generalized "Opt-in upstream architect step" CHANGELOG.md historical references preserved per brief; appended a 2026-05-04 note at top of [3.0.0] block stating the plugin is no longer publicly distributed but the architecture/overview.md slot remains supported for any compatible producer. The architecture/overview.md filesystem contract (Handover 3, EXTERNAL, drift-WARN) is unchanged — anyone implementing a compatible producer can plug in. 361 tests still green (no regressions). doc-consistency pins for /ultracontinue-local and Handover 7 § Lifecycle still pass. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
88 lines
3.5 KiB
Markdown
88 lines
3.5 KiB
Markdown
# Security Policy — ultraplan-local
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## Reporting a vulnerability
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Open a **private** issue on Forgejo:
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> https://git.fromaitochitta.com/open/ktg-plugin-marketplace
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Tag it `security` and mark it private. Do not file public issues for
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unpatched vulnerabilities. There is no SLA — this is a solo-maintained
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plugin — but acknowledged reports are usually triaged within 7 days.
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## Supported versions
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Only the **current minor version** receives security fixes. When v3.2.0
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ships, v3.1.x stops receiving patches. Pin to the latest minor and
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update on the next bump.
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| Version | Supported |
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|---------|-----------|
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| 3.1.x | Yes |
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| 3.0.x | No (upgrade to 3.1.x) |
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| < 3.0 | No |
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## Scope
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The plugin's security posture covers:
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### Plugin-owned hooks (`hooks/scripts/`)
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| Hook | Trigger | Purpose |
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|------|---------|---------|
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| `pre-bash-executor.mjs` | `PreToolUse` for Bash | BLOCKs known-dangerous shell patterns; WARNs on suspicious ones; fails open on parse errors |
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| `pre-write-executor.mjs` | `PreToolUse` for Write | BLOCKs writes to `.git/hooks/`, `~/.ssh/`, `.env`, and other sensitive paths |
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| `pre-compact-flush.mjs` | `PreCompact` | Flushes `progress.json` from git history before compaction (P0 drift fix); read-only beyond `progress.json` |
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| `session-title.mjs` *(planned, F9)* | `UserPromptSubmit` | Sets session title `ultra:<command>:<slug>` for headless multiplexing |
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All hooks are zero-dependency Node.js (`.mjs`) scripts and are designed
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to **fail open** — a hook crash never blocks the user's work. Hooks log
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to stderr only; they never write to user files outside their declared
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scope.
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### Prompt-level denylist (`commands/ultraexecute-local.md`)
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The execute command embeds a denylist that takes effect even in headless
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sessions where hooks may not fire. This is layer 4 of the defense-in-depth
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model and protects against plan-injected destructive commands.
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### Validators (`lib/validators/*.mjs`)
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Read-only. Never write to user files. Used both by hooks and by command
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phases to detect malformed artifacts before they propagate.
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## Out of scope
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- **Opt-in upstream architect step.** Any external producer of
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`architecture/overview.md` ships its own security posture. The
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architecture-discovery validator in this plugin treats
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`architecture/overview.md` as an external contract (drift-WARN, never
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drift-FAIL).
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- **LLM output content.** The plugin validates artifact *shape*, not
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artifact *truthfulness*. A plan that passes `plan-validator --strict`
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may still contain hallucinated file paths or unsafe commands; that is
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why `pre-bash-executor` exists.
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- **The Claude Code CLI itself.** Report Claude Code vulnerabilities to
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Anthropic via https://github.com/anthropics/claude-code/issues.
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## Hardening recommendations
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For fork-ers handling untrusted task briefs or plans:
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1. **Set `disableSkillShellExecution: true`** in `~/.claude/settings.json`
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(CC v2.1.91+) to prevent Skills from invoking arbitrary shell.
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2. **Run plan validation in `--strict` mode** before any execute:
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```bash
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node ${CLAUDE_PLUGIN_ROOT}/lib/validators/plan-validator.mjs --strict plan.md
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```
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3. **Review the plan-critic adversarial output** before approving plans
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from external sources — semantic rubric (rule #7) catches deferred
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decisions that an attacker could exploit.
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4. **Pin a CC version floor.** v3.1.0 of this plugin assumes CC ≥
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2.1.85 for the `if`-field on hooks; older CC silently ignores the
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field, weakening the scoping.
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## Past advisories
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None as of v3.1.0. This section will list CVE-style entries if any are
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discovered.
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