CVE-2023-40582 (Other, published 2023-08-30T18:15Z)
Description: value: find-exec is a utility to discover available shell commands. Versions prior to 1.0.3 did not properly escape user input and are vulnerable to Command Injection via an attacker controlled parameter. As a result, attackers may run malicious shell commands in the context of the running process. This issue has been addressed in version 1.0.3. users are advised to upgrade. Users unable to upgrade should ensure that all input passed to find-exec comes from a trusted source.
Severity: nan (CVSS v3 base score: 9.8)
Weakness: CWE-78 \u2014 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.
Repository: https://github.com/shime/find-exec
Files changed:
.github/workflows/main.js.yml
.gitignore
LICENSE
README.md
index.js
package-lock.json
package.json
test/all.js
test/shims/bar
test/shims/foo
yarn.lock
Commit message: Start using shell quote


Vulnerable code:

Fixed code:
# This workflow will do a clean install of node dependencies, cache/restore them, build the source code and run tests across different versions of node
# For more information see: https://help.github.com/actions/language-and-framework-guides/using-nodejs-with-github-actions

name: main

on:
  push:
    branches: [ master ]
  pull_request:
    branches: [ master ]

jobs:
  build:
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        node-version: [12.x, 14.x, 16.x]
        os: [ubuntu-latest, macOS-latest, windows-latest]

    steps:
    - uses: actions/checkout@v2
    - name: Use Node.js ${{ matrix.node-version }}
      uses: actions/setup-node@v2
      with:
        node-version: ${{ matrix.node-version }}
        cache: 'yarn'
    - run: yarn install
    - run: npm test
node_modules
The MIT License (MIT)

Copyright (c) 2016 Two Bucks Ltd

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
# find-exec

[![Downloads](https://img.shields.io/npm/dt/find-exec.svg)](https://npmjs.org/package/find-exec)

Takes a list of shell commands and returns the first available. Works synchronously to respect the order.

Returns `null` if none of the listed commands were found.

## Examples

    $ which mplayer
    which: no mplayer

    $ which afplay
    /usr/bin/afplay

```javascript
var command = require('find-exec')(["mplayer", "afplay", "cvlc"])
console.log(command) // afplay
```

```javascript
var command = require('find-exec')(["mplayer"])
console.log(command) // null
```

## Installation

    npm install find-exec

## License

MIT
var exec = require('child_process').execSync
var platform = require('os').platform()
var quote = require("shell-quote").quote

module.exports = function(){
  var commands = Array.isArray(arguments[0]) ? arguments[0] : Array.prototype.slice.apply(arguments)
  var command = null

  commands.some(function(c){
    if (isExec(findCommand(c))){
      command = c
      return true
    }
  })

  return command
}

function isExec(command){
  try{
    exec(quote(command.split(" ")), { stdio: 'ignore' })
    return true
  }
  catch (_e){
    return false
  }
}

function findCommand(command){
  if (/^win/.test(platform)){
    return "where " + command
  } else {
    return "command -v " + command
  }
}
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{
  "name": "find-exec",
  "version": "1.0.2",
  "description": "Finds first available shell command from a list.",
  "main": "index.js",
  "scripts": {
    "test": "mocha test/all.js"
  },
  "repository": {
    "type": "git",
    "url": "https://github.com/shime/find-exec.git"
  },
  "keywords": [
    "find",
    "executable",
    "shell",
    "minimalistic",
    "command",
    "line"
  ],
  "author": "Hrvoje Simic <shime.ferovac@gmail.com>",
  "license": "MIT",
  "bugs": {
    "url": "https://github.com/shime/find-exec/issues"
  },
  "homepage": "https://github.com/shime/find-exec",
  "devDependencies": {
    "expect.js": "^0.3.1",
    "mocha": "^9.1.3"
  },
  "dependencies": {
    "shell-quote": "^1.8.1"
  }
}
var expect = require("expect.js")
var platform = require('os').platform()
var shell = require('./../')

if (/^win/.test(platform)){
  describe('Windows', function(){
    it("returns the first command available", function(){
      var result = shell("unknown", "explorer", "still-unknown")
      expect(result).to.be('explorer')
    })

    it("is okay if one of the bins is missing", function(){
      var result = shell(["unknown", "explorer"])
      expect(result).to.be('explorer')
    })

    it("returns null if command was not found", function(){
      expect(shell(["unknown"])).to.be(null)
    })
  })
} else {
  it("returns the first command available", function(){
    var result = shell("./test/shims/foo", "./test/shims/baz", "./test/shims/bar")
    expect(result).to.be('./test/shims/foo')
  })

  it("is okay if one of the bins is missing", function(){
    var result = shell(["./test/shims/baz", "./test/shims/bar"])
    expect(result).to.be('./test/shims/bar')
  })

  it("returns null if command was not found", function(){
    expect(shell(["./test/shims/baz"])).to.be(null)
  })
}
echo 'bar'
echo 'foo'
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  version "1.0.0"
  resolved "https://registry.yarnpkg.com/fs.realpath/-/fs.realpath-1.0.0.tgz#1504ad2523158caa40db4a2787cb01411994ea4f"
  integrity sha1-FQStJSMVjKpA20onh8sBQRmU6k8=

glob@7.1.2:
  version "7.1.2"
  resolved "https://registry.yarnpkg.com/glob/-/glob-7.1.2.tgz#c19c9df9a028702d678612384a6552404c636d15"
  integrity sha512-MJTUg1kjuLeQCJ+ccE4Vpa6kKVXkPYJ2mOCQyUuKLcLQsdrMCpBPUi8qVE6+YuaJkozeA9NusTAw3hLr8Xe5EQ==
  dependencies:
    fs.realpath "^1.0.0"
    inflight "^1.0.4"
    inherits "2"
    minimatch "^3.0.4"
    once "^1.3.0"
    path-is-absolute "^1.0.0"

growl@1.10.5:
  version "1.10.5"
  resolved "https://registry.yarnpkg.com/growl/-/growl-1.10.5.tgz#f2735dc2283674fa67478b10181059355c369e5e"
  integrity sha512-qBr4OuELkhPenW6goKVXiv47US3clb3/IbuWF9KNKEijAy9oeHxU9IgzjvJhHkUzhaj7rOUD7+YGWqUjLp5oSA==

has-flag@^3.0.0:
  version "3.0.0"
  resolved "https://registry.yarnpkg.com/has-flag/-/has-flag-3.0.0.tgz#b5d454dc2199ae225699f3467e5a07f3b955bafd"
  integrity sha1-tdRU3CGZriJWmfNGfloH87lVuv0=

he@1.1.1:
  version "1.1.1"
  resolved "https://registry.yarnpkg.com/he/-/he-1.1.1.tgz#93410fd21b009735151f8868c2f271f3427e23fd"
  integrity sha1-k0EP0hsAlzUVH4howvJx80J+I/0=

inflight@^1.0.4:
  version "1.0.6"
  resolved "https://registry.yarnpkg.com/inflight/-/inflight-1.0.6.tgz#49bd6331d7d02d0c09bc910a1075ba8165b56df9"
  integrity sha1-Sb1jMdfQLQwJvJEKEHW6gWW1bfk=
  dependencies:
    once "^1.3.0"
    wrappy "1"

inherits@2:
  version "2.0.3"
  resolved "https://registry.yarnpkg.com/inherits/-/inherits-2.0.3.tgz#633c2c83e3da42a502f52466022480f4208261de"
  integrity sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4=

minimatch@3.0.4, minimatch@^3.0.4:
  version "3.0.4"
  resolved "https://registry.yarnpkg.com/minimatch/-/minimatch-3.0.4.tgz#5166e286457f03306064be5497e8dbb0c3d32083"
  integrity sha512-yJHVQEhyqPLUTgt9B83PXu6W3rx4MvvHvSUvToogpwoGDOUQ+yDrR0HRot+yOCdCO7u4hX3pWft6kWBBcqh0UA==
  dependencies:
    brace-expansion "^1.1.7"

minimist@0.0.8:
  version "0.0.8"
  resolved "https://registry.yarnpkg.com/minimist/-/minimist-0.0.8.tgz#857fcabfc3397d2625b8228262e86aa7a011b05d"
  integrity sha1-hX/Kv8M5fSYluCKCYuhqp6ARsF0=

mkdirp@0.5.1:
  version "0.5.1"
  resolved "https://registry.yarnpkg.com/mkdirp/-/mkdirp-0.5.1.tgz#30057438eac6cf7f8c4767f38648d6697d75c903"
  integrity sha1-MAV0OOrGz3+MR2fzhkjWaX11yQM=
  dependencies:
    minimist "0.0.8"

mocha@^5.2.0:
  version "5.2.0"
  resolved "https://registry.yarnpkg.com/mocha/-/mocha-5.2.0.tgz#6d8ae508f59167f940f2b5b3c4a612ae50c90ae6"
  integrity sha512-2IUgKDhc3J7Uug+FxMXuqIyYzH7gJjXECKe/w43IGgQHTSj3InJi+yAA7T24L9bQMRKiUEHxEX37G5JpVUGLcQ==
  dependencies:
    browser-stdout "1.3.1"
    commander "2.15.1"
    debug "3.1.0"
    diff "3.5.0"
    escape-string-regexp "1.0.5"
    glob "7.1.2"
    growl "1.10.5"
    he "1.1.1"
    minimatch "3.0.4"
    mkdirp "0.5.1"
    supports-color "5.4.0"

ms@2.0.0:
  version "2.0.0"
  resolved "https://registry.yarnpkg.com/ms/-/ms-2.0.0.tgz#5608aeadfc00be6c2901df5f9861788de0d597c8"
  integrity sha1-VgiurfwAvmwpAd9fmGF4jeDVl8g=

once@^1.3.0:
  version "1.4.0"
  resolved "https://registry.yarnpkg.com/once/-/once-1.4.0.tgz#583b1aa775961d4b113ac17d9c50baef9dd76bd1"
  integrity sha1-WDsap3WWHUsROsF9nFC6753Xa9E=
  dependencies:
    wrappy "1"

path-is-absolute@^1.0.0:
  version "1.0.1"
  resolved "https://registry.yarnpkg.com/path-is-absolute/-/path-is-absolute-1.0.1.tgz#174b9268735534ffbc7ace6bf53a5a9e1b5c5f5f"
  integrity sha1-F0uSaHNVNP+8es5r9TpanhtcX18=

supports-color@5.4.0:
  version "5.4.0"
  resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-5.4.0.tgz#1c6b337402c2137605efe19f10fec390f6faab54"
  integrity sha512-zjaXglF5nnWpsq470jSv6P9DwPvgLkuapYmfDm3JWOm0vkNTVF2tI4UrN2r6jH1qM/uc/WtxYY1hYoA2dOKj5w==
  dependencies:
    has-flag "^3.0.0"

wrappy@1:
  version "1.0.2"
  resolved "https://registry.yarnpkg.com/wrappy/-/wrappy-1.0.2.tgz#b5243d8f3ec1aa35f1364605bc0d1036e30ab69f"
  integrity sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=