CVE-2023-31125: Engine.io Engine.io Uncaught Exception Vulnerability Vulnerability

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-q9mw-68c2-j6m5",
  "modified" : "2025-02-13T18:54:10Z",
  "published" : "2023-05-03T21:56:51Z",
  "aliases" : [ "CVE-2023-31125" ],
  "summary" : "engine.io Uncaught Exception vulnerability",
  "details" : "### Impact\n\nA specially crafted HTTP request can trigger an uncaught exception on the Engine.IO server, thus killing the Node.js process.\n\n```\nTypeError: Cannot read properties of undefined (reading 'handlesUpgrades')\n    at Server.onWebSocket (build/server.js:515:67)\n```\n\nThis impacts all the users of the [`engine.io`](https://www.npmjs.com/package/engine.io) package, including those who uses depending packages like [`socket.io`](https://www.npmjs.com/package/socket.io).\n\n### Patches\n\nA fix has been released today (2023/05/02): [6.4.2](https://github.com/socketio/engine.io/releases/tag/6.4.2)\n\nThis bug was introduced in version 5.1.0 and included in version 4.1.0 of the `socket.io` parent package. Older versions are not impacted.\n\nFor `socket.io` users:\n\n| Version range               | `engine.io` version | Needs minor update?                                                                                    |\n|-----------------------------|---------------------|--------------------------------------------------------------------------------------------------------|\n| `socket.io@4.6.x`           | `~6.4.0`            | `npm audit fix` should be sufficient                                                                   |\n| `socket.io@4.5.x`           | `~6.2.0`            | Please upgrade to `socket.io@4.6.x`                                                                    |\n| `socket.io@4.4.x`           | `~6.1.0`            | Please upgrade to `socket.io@4.6.x`                                                                    |\n| `socket.io@4.3.x`           | `~6.0.0`            | Please upgrade to `socket.io@4.6.x`                                                                    |\n| `socket.io@4.2.x`           | `~5.2.0`            | Please upgrade to `socket.io@4.6.x`                                                                    |\n| `socket.io@4.1.x`           | `~5.1.1`            | Please upgrade to `socket.io@4.6.x`                                                                    |\n| `socket.io@4.0.x`           | `~5.0.0`            | Not impacted |\n| `socket.io@3.1.x`           | `~4.1.0`            | Not impacted |\n| `socket.io@3.0.x`           | `~4.0.0`            | Not impacted |\n| `socket.io@2.5.0`           | `~3.6.0`            | Not impacted |\n| `socket.io@2.4.x` and below | `~3.5.0`            | Not impacted |\n\n### Workarounds\n\nThere is no known workaround except upgrading to a safe version.\n\n### For more information\n\nIf you have any questions or comments about this advisory:\n\n* Open an issue in [`engine.io`](https://github.com/socketio/engine.io)\n\nThanks to Thomas Rinsma from Codean for the responsible disclosure.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "engine.io"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "5.1.0"
      }, {
        "fixed" : "6.4.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/socketio/engine.io/security/advisories/GHSA-q9mw-68c2-j6m5"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-31125"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/socketio/engine.io/commit/fc480b4f305e16fe5972cf337d055e598372dc44"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/socketio/engine.io"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/socketio/engine.io/releases/tag/6.4.2"
  }, {
    "type" : "WEB",
    "url" : "https://security.netapp.com/advisory/ntap-20230622-0002"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-248" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-05-03T21:56:51Z",
    "nvd_published_at" : "2023-05-08T21:15:11Z"
  }
}