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audit-tools@0.42.0: AI-agent control-surface risk | LPM Firewall

registry / audit-tools / 0.42.0

audit-tools@0.42.0

Provider-neutral code auditing and remediation workflows for arbitrary repositories.

AI Security Review

scanned 3h ago · by lpm-firewall-ai

LPM flags this version as an AI-agent control-surface risk. Installing the package runs postinstall and mutates global AI-agent configuration surfaces. It installs skills, prompts, commands, and plugins without an explicit user command.

Static reason

High-risk behavior combination matched malicious policy.; source matched previously finalized malicious package; routed for review

Trigger

npm install / postinstall

Impact

Adds package-controlled commands and skills to Codex, OpenCode, Claude, and Antigravity environments.

Mechanism

automatic global AI-agent skill and configuration deployment

Policy narrative

On npm installation, package.json invokes scripts/postinstall.mjs, which launches both deployers. They copy package-controlled skills and prompts into global Codex and Claude locations, merge a global OpenCode command/agent configuration, and install Antigravity and Claude plugins. These changes activate automatically for future AI-agent sessions and occur without a user selecting the package commands or consenting to agent-control configuration changes.

Rationale

The lifecycle hook concretely mutates multiple foreign, broad AI-agent control surfaces at install time. This satisfies the blocking policy even though no separate exfiltration endpoint was found.

Evidence

package.jsonscripts/postinstall.mjsscripts/audit/postinstall.mjsscripts/remediate/postinstall.mjsscripts/shared/install-host-assets.mjsskills/audit-code/SKILL.mdskills/remediate-code/SKILL.md~/.codex/skills/audit-code/SKILL.md

Source & flagged code

8 flagged · loading source

package.jsonView file

•scripts.postinstall = node scripts/postinstall.mjs

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

•scripts.postinstall = node scripts/postinstall.mjs

Medium

Ambiguous Install Lifecycle Script

Install-time lifecycle script is not statically allowlisted and needs review.

package.jsonView on unpkg

wrapper/audit-code-wrapper-lib.mjsView file

•matchType = token_shingles matchedPackage = audit-tools@0.39.12 matchedPath = wrapper/audit-code-wrapper-lib.mjs matchedIdentity = npm:YXVkaXQtdG9vbHM:0.39.12 similarity = 1.000 shingleOverlap = 48 summary = source token shingles overlapped finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

wrapper/audit-code-wrapper-lib.mjsView on unpkg

267const distUrl = new URL(`file:///${distCliEntry.replace(/\\/g, '/')}`); L268: const cli = await import(distUrl.href); L269: await cli.runCli([process.execPath, distCliEntry, commandName, ...commandArgs]);

Medium

Dynamic Require

Package source references dynamic require/import behavior.

wrapper/audit-code-wrapper-lib.mjsView on unpkg · L267

dist/audit/orchestrator/reviewPackets.jsView file

1import { createHash } from "node:crypto"; L2: import { collectGraphEdges } from "audit-tools/shared";

Low

Weak Crypto

Package source references weak cryptographic algorithms.

dist/audit/orchestrator/reviewPackets.jsView on unpkg · L1

scripts/audit/postinstall.mjsView file

1Install-time code directly mutates a foreign AI-agent control surface: L157: grep: 'allow', L158: edit: { ...OPENCODE_AUDIT_EDIT_PERMISSION }, L159: bash: { ...OPENCODE_AUDIT_BASH_PERMISSION }, L160: }; ... L202: function claudePluginExternalDir() { L203: return join(homedir(), '.claude', 'plugins', 'marketplaces', 'claude-plugins-official', 'external_plugins', 'audit-code'); L204: } ... L220: label: 'Claude command', L221: path: join(homedir(), '.claude', 'commands', 'audit-code.md'), L222: sourcePath: promptSourceFile, ... L226: label: 'Codex skill', L227: path: join(homedir(), '.codex', 'skills', 'audit-code', 'SKILL.md'), Write operation from scripts/shared/install-host-assets.mjs: L12: import { dirname, join } from "node:path"; L13: import { mkdirSync, existsSync, readFileSync, writeF

Critical

Ai Agent Control Hijack

Source creates an unconsented AI-agent control surface through install-time mutation or a default unauthenticated remote skill channel.

scripts/audit/postinstall.mjsView on unpkg · L1

dist/audit/cli/args.jsView file

•stage = ast_semantic_analysis; reason = ast_alias_growth_limit_exceeded; limitedFiles = 1

High

Semantic Analysis Limited

A bounded semantic-analysis stage reached its safety limit; remaining detectors completed, but this package requires AI review.

dist/audit/cli/args.jsView on unpkg

wrapper/audit-code-wrapper-build.mjsView file

•matchType = normalized_sha256 matchedPackage = audit-tools@0.39.12 matchedPath = wrapper/audit-code-wrapper-build.mjs matchedIdentity = npm:YXVkaXQtdG9vbHM:0.39.12 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

wrapper/audit-code-wrapper-build.mjsView on unpkg

Source & flagged code

8 flagged

package.jsonView file

Lines 20-60json

20 },

21 "./package.json": "./package.json"

22 },

23 "files": [

24 "dist/**",

25 "audit-code.mjs",

26 "wrapper/**",

27 "remediate-code.mjs",

28 "dispatch/**",

29 "schemas/**",

30 "skills/**",

31 "scripts/postinstall.mjs",

32 "scripts/audit/postinstall.mjs",

33 "scripts/remediate/postinstall.mjs",

34 "scripts/shared/install-host-assets.mjs",

35 "opencode.json",

36 "README.md",

37 "docs/audit-pkg/**"

38 ],

39 "scripts": {

40 "postinstall": "node scripts/postinstall.mjs",

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg · L40

Medium

Ambiguous Install Lifecycle Script

Install-time lifecycle script is not statically allowlisted and needs review.

package.jsonView on unpkg · L40

41 "prebuild": "node scripts/shared/guard-no-suite-running.mjs",

42 "build": "node scripts/shared/clean-dist.mjs && tsc -p tsconfig.json",

43 "check": "tsc -p tsconfig.json --noEmit",

44 "check:tests": "tsc -p tsconfig.test.json",

45 "nightly:inbox": "node scripts/nightly/render-inbox.mjs",

46 "nightly:ingest": "node scripts/nightly/ingest-answers.mjs",

47 "test:doc-contract": "node scripts/shared/run-vitest-gate.mjs tests/audit/release-contract.test.ts tests/audit/file-lock-doc-sync.test.ts tests/audit/host-asset-renderer-drift.test.ts",

48 "test": "npm run build && node scripts/shared/run-vitest-gate.mjs",

49 "test:single": "npm run build && node scripts/shared/run-vitest-gate.mjs",

50 "verify:guards": "node scripts/shared/run-vitest-gate.mjs --retry=2 --exclude \"**/audit-code-completion-*.test.ts\" --exclude \"**/audit-code-wrapper-*.test.ts\" --exclude \"**/audit/next-step-core-*.test.ts\" --exclude \"**/seam-host-only-next-step.test.ts\" --exclude \"**/*-e2e.test.*\" --exclude \"**/next-step-implement-dispatch.test.ts\" --exclude \"**/next-step-pipeline-dispatch.test.ts\""

51 "verify:checks": "node scripts/shared/profile-run.mjs verify-checks check:control-bytes check:version-gates check:guard-reach check:ci-trigger-paths check:offload-lanes check:loop-core-patterns check:constitutional-doc-paths check:runtime-artifact-names check:deadcode check:lint check:dup check:depgraph check:doc-manifest check:doc-links check:doc-code-citations check:gate-enumeration check:philosophy-brief check:nightly-routine-prompt check:handoff-roadmap check:backlog-index check:memory-citations check:backlog-budget check:backlog-status check:backlog-line-numbers check:tests build veri ...

52 "verify:release": "npm run verify:checks && node scripts/shared/run-vitest-gate.mjs && npm run smoke:linked-audit-code && npm run smoke:linked-remediate-code",

53 "check:control-bytes": "node scripts/check-control-bytes.mjs",

54 "check:guard-reach": "node scripts/check-guard-reach.mjs",

55 "check:ci-trigger-paths": "node scripts/shared/generate-ci-trigger-paths.mjs --check",

56 "check:deadcode": "knip --no-config-hints",

57 "check:lint": "eslint .",

58 "check:dup": "jscpd --config .jscpd.json src scripts tests",

59 "check:depgraph": "depcruise --config .dependency-cruiser.cjs src",

60 "check:doc-manifest": "node scripts/check-doc-manifest.mjs",

Long lines were clipped for display.

wrapper/audit-code-wrapper-lib.mjsView file

Lines 247-287javascript

247 // Gate the mkdir behind the same ensureArtifactsDir flag as runDistCommand so

248 // "the artifacts directory is created only for designated stateful commands"

249 // holds on this path too (CE-001); mcp is a designated stateful command and

250 // opts in explicitly at its call site.

251 if (ensureArtifactsDir) {

252 await mkdir(artifactsDir, { recursive: true

dist/audit/orchestrator/reviewPackets.jsView file

Lines 1-21javascript

1import { createHash } from "node:crypto";

2import { collectGraphEdges } from "audit-tools/shared";

Low

Weak Crypto

Package source references weak cryptographic algorithms.

dist/audit/orchestrator/reviewPackets.jsView on unpkg · L1

3import { priorityRank, sortLenses } from "./auditTaskUtils.js";

scripts/audit/postinstall.mjsView file

Lines 1-21javascript

1#!/usr/bin/env node

2import { homedir } from 'os';

3import { join, dirname } from 'path';

4import { readFileSync } from 'fs';

5import { fileURLToPath } from

dist/audit/cli/args.jsView file

•stage = ast_semantic_analysis; reason = ast_alias_growth_limit_exceeded; limitedFiles = 1

High

Semantic Analysis Limited

A bounded semantic-analysis stage reached its safety limit; remaining detectors completed, but this package requires AI review.

dist/audit/cli/args.jsView on unpkg

wrapper/audit-code-wrapper-build.mjsView file

•matchType = normalized_sha256 matchedPackage = audit-tools@0.39.12 matchedPath = wrapper/audit-code-wrapper-build.mjs matchedIdentity = npm:YXVkaXQtdG9vbHM:0.39.12 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

wrapper/audit-code-wrapper-build.mjsView on unpkg