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@chenronggui/codex-win-patch: AI-agent control-surface risk | LPM Firewall

registry / @chenronggui/codex-win-patch / 0.155.1-patch.3

@chenronggui/codex-win-patch@0.155.1-patch.3

面向 OpenAI Codex CLI 的非官方 Windows x64 补丁。

AI Security Review

scanned 19d ago · by lpm-firewall-ai

LPM flags this version as an AI-agent control-surface risk. An npm postinstall hook replaces executables in the separately installed @openai Codex package with opaque binaries shipped by this package. This is an unconsented mutation of a foreign AI-agent control surface.

Static reason

One or more suspicious static signals were detected.; source fingerprint signature matched known malicious package; routed for review

Trigger

Installing this package globally invokes its postinstall hook.

Impact

Future Codex use runs package-supplied native binaries instead of the installed @openai binaries.

Mechanism

Node launches PowerShell, which finds the global Codex package and copies this package's codex.exe and apply_patch.exe over its executable paths.

Policy narrative

A global npm installation automatically launches the package installer. The installer targets a separately installed @openai Codex directory and overwrites its executable and helper binary with opaque package payloads. Backups and checksum checks do not remove the risk because the substituted payload is still selected and installed by this package.

AI rationale

The automatic postinstall chain mutates another vendor's Codex executable paths with opaque native binaries. This meets the install-control-surface blocking boundary despite its backup and verification logic.

Evidence

package.jsonbin/powershell.jsinstall.ps1bin/install.js

Decision evidence

public snapshot

Source & flagged code

9 flagged · loading source

package.jsonView file

•scripts.postinstall = node bin/install.js --postinstall

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

41"scripts": { "postinstall": "node bin/install.js --postinstall" }

High

Ai Review Evidence

The package automatically runs an installer after npm installation.

package.jsonView on unpkg · L41

•scripts.postinstall = node bin/install.js --postinstall

Medium

Ambiguous Install Lifecycle Script

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

package.jsonView on unpkg

codex.exeView file

•path = codex.exe kind = native_binary sizeBytes = 308655616 magicHex = [redacted]

Medium

Ships Native Binary

Package ships native binary artifacts.

codex.exeView on unpkg

restore.ps1View file

•path = restore.ps1 kind = build_helper sizeBytes = 4792 magicHex = [redacted]

Medium

Ships Build Helper

Package ships non-JavaScript build or shell helper files.

restore.ps1View on unpkg

bin/powershell.jsView file

•matchType = malicious_source_fingerprint_signature signature = bde713c797513693 signatureType = suspicious_hashes sourceLabel = final_verdict:malicious matchedPackage = @chenronggui/codex-win-patch@0.155.1-patch.2 matchedPath = bin/powershell.js matchedIdentity = npm:[redacted]:0.155.1-patch.2 similarity = 1.000 shingleOverlap = 3 summary = package final verdict is malicious

High

Known Malware Source Fingerprint Signature

Source fingerprint signature matches a known malicious package signature; route for source-aware review.

bin/powershell.jsView on unpkg

22const scriptPath = path.join(__dirname, "..", scriptName); const commandArgs = [ "-NoLogo", "-NoProfile", "-NonInteractive", "-ExecutionPolicy", "Bypass", "-File", scriptPath, ...args, ]; for (const command of powershellCandidates()) { const result = spawnSync(command, commandArgs, { stdio: "inherit", windowsHide: true, });

High

Ai Review Evidence

The installer invokes PowerShell and passes the package install script.

bin/powershell.jsView on unpkg · L22

install.ps1View file

175$codexTarget = Join-Path $packageDirectory "bin\codex.exe" $pathDirectory = Join-Path $packageDirectory "codex-path" $applyPatchTarget = Join-Path $pathDirectory "apply_patch.exe" $codexSource = Join-Path $PayloadDirectory "codex.exe" $applyPatchSource = Join-Path $PayloadDirectory "apply_patch.exe"

High

Ai Review Evidence

The PowerShell script locates the separately installed @openai Codex package and replaces its codex.exe and apply_patch.exe binaries.

install.ps1View on unpkg · L175

215try { Write-Step "Installing codex.exe and native apply_patch.exe" [IO.Directory]::CreateDirectory($pathDirectory) | Out-Null Copy-FileReplacing $codexSource $codexTarget Copy-FileReplacing $applyPatchSource $applyPatchTarget

High

Ai Review Evidence

The PowerShell script locates the separately installed @openai Codex package and replaces its codex.exe and apply_patch.exe binaries.

install.ps1View on unpkg · L215

Source & flagged code

9 flagged

package.jsonView file

Lines 21-48json

21 ],

22 "engines": {

23 "node": ">=16"

24 },

25 "bin": {

26 "codex-win-patch-install": "bin/install.js",

27 "codex-win-patch-restore": "bin/restore.js"

28 },

29 "files": [

30 "bin",

31 "apply_patch.exe",

32 "build-info.json",

33 "codex.exe",

34 "docs",

35 "install.ps1",

36 "LICENSE",

37 "README.md",

38 "restore.ps1",

39 "SHA256SUMS"

40 ],

41 "scripts": {

42 "postinstall": "node bin/install.js --postinstall"

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg · L42

Medium

Ambiguous Install Lifecycle Script

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

package.jsonView on unpkg · L42

43 },

High

Ai Review Evidence

The package automatically runs an installer after npm installation.

package.jsonView on unpkg · L41

44 "publishConfig": {

45 "access": "public",

46 "registry": "https://registry.npmjs.org/"

47 }

48}

codex.exeView file

•path = codex.exe kind = native_binary sizeBytes = 308655616 magicHex = [redacted]

Medium

Ships Native Binary

Package ships native binary artifacts.

codex.exeView on unpkg

restore.ps1View file

•path = restore.ps1 kind = build_helper sizeBytes = 4792 magicHex = [redacted]

Medium

Ships Build Helper

Package ships non-JavaScript build or shell helper files.

restore.ps1View on unpkg

bin/powershell.jsView file

Lines 2-42javascript

2const path = require("node:path");

3

4function powershellCandidates() {

5 const configured = process.env.CODEX_WINDOWS_PATCH_POWERSHELL;

install.ps1View file

Lines 155-235text

155 throw "This overlay supports Windows x64 only."

156}

157

158Write-Step "Verifying overlay payload"

159Assert-PayloadHashes

160

161$globalNpmRoot = Resolve-GlobalNpmRoot

162$packageDirectory = Resolve-CodexPackageDirectory $globalNpmRoot

163$packageManifestPath = Join-Path $packageDirectory "codex-package.json"

164$packageManifest = Get-Content -LiteralPath $packageManifestPath -Raw | ConvertFrom-Json

165$buildInfoPath = Join-Path $PayloadDirectory "build-info.json"

166if (Test-Path -LiteralPath $buildInfoPath -PathType Leaf) {