GHSA-2CPX-6PQP-WF35

Vulnerability from github – Published: 2022-07-29 22:24 – Updated: 2025-09-30 16:56
VLAI?
Summary
fs2-io skips mTLS client verification
Details

Impact

When establishing a server-mode TLSSocket using fs2-io on Node.js, the parameter requestCert = true is ignored, peer certificate verification is skipped, and the connection proceeds.

The vulnerability is limited to: 1. fs2-io running on Node.js. The JVM TLS implementation is completely independent. 2. TLSSockets in server-mode. Client-mode TLSSockets are implemented via a different API. 3. mTLS as enabled via requestCert = true in TLSParameters. The default setting is false for server-mode TLSSockets.

It was introduced with the initial Node.js implementation of fs2-io in v3.1.0.

Patches

A patch is released in v3.2.11. The requestCert = true parameter is respected and the peer certificate is verified. If verification fails, a SSLException is raised.

Workarounds

If using an unpatched version on Node.js, do not use a server-mode TLSSocket with requestCert = true to establish a mTLS connection.

References

  • https://github.com/nodejs/node/issues/43994
  • https://www.cloudflare.com/learning/access-management/what-is-mutual-tls/

For more information

If you have any questions or comments about this advisory: * Open an issue. * Contact the Typelevel Security Team.

Severity ?
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "co.fs2:fs2-io"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.1.0"
            },
            {
              "fixed": "3.2.11"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "co.fs2:fs2-io_2.12"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.1.0"
            },
            {
              "fixed": "3.2.11"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "co.fs2:fs2-io_3"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.1.0"
            },
            {
              "fixed": "3.2.11"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "co.fs2:fs2-io_2.13"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.1.0"
            },
            {
              "fixed": "3.2.11"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "co.fs2:fs2-io_sjs1_2.13"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.1.0"
            },
            {
              "fixed": "3.2.11"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "co.fs2:fs2-io_sjs1_3"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.1.0"
            },
            {
              "fixed": "3.2.11"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2022-31183"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-295"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2022-07-29T22:24:10Z",
    "nvd_published_at": "2022-08-01T20:15:00Z",
    "severity": "CRITICAL"
  },
  "details": "### Impact\n\nWhen establishing a server-mode `TLSSocket` using `fs2-io` on Node.js, the parameter `requestCert = true` is ignored, peer certificate verification is skipped, and the connection proceeds.\n\nThe vulnerability is limited to:\n1. `fs2-io` running on Node.js. The JVM TLS implementation is completely independent.\n2. `TLSSocket`s in server-mode. Client-mode `TLSSocket`s are implemented via a different API.\n3. mTLS as enabled via `requestCert = true` in `TLSParameters`. The default setting is `false` for server-mode `TLSSocket`s.\n\nIt was introduced with the initial Node.js implementation of fs2-io in v3.1.0.\n\n### Patches\n\nA patch is released in v3.2.11. The `requestCert = true` parameter is respected and the peer certificate is verified. If verification fails, a `SSLException` is raised.\n\n### Workarounds\n\nIf using an unpatched version on Node.js, do not use a server-mode `TLSSocket` with `requestCert = true` to establish a mTLS connection.\n\n### References\n- https://github.com/nodejs/node/issues/43994\n- https://www.cloudflare.com/learning/access-management/what-is-mutual-tls/\n\n### For more information\nIf you have any questions or comments about this advisory:\n* [Open an issue.](https://github.com/typelevel/fs2/issues/new/choose)\n* Contact the [Typelevel Security Team](https://github.com/typelevel/.github/blob/main/SECURITY.md).",
  "id": "GHSA-2cpx-6pqp-wf35",
  "modified": "2025-09-30T16:56:23Z",
  "published": "2022-07-29T22:24:10Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/typelevel/fs2/security/advisories/GHSA-2cpx-6pqp-wf35"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-31183"
    },
    {
      "type": "WEB",
      "url": "https://github.com/nodejs/node/issues/43994"
    },
    {
      "type": "WEB",
      "url": "https://github.com/typelevel/fs2/commit/19ce392e8093d9571387dbd78e159e655a85aeea"
    },
    {
      "type": "WEB",
      "url": "https://github.com/typelevel/fs2/commit/659824395826a314e0a4331535dbf1ef8bef8207"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/typelevel/fs2"
    },
    {
      "type": "WEB",
      "url": "https://github.com/typelevel/fs2/releases/tag/v3.2.11"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "fs2-io skips mTLS client verification"
}


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