CVE-2023-32695: Socket.io parser Insufficient Validation When Decoding A Vulnerability

MODERATE
Advisory Identifier: GHSA-cqmj-92xf-r6r9
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CVSS 7.3
CWE-20 CWE-754
Published
Advisory Summary

CVE-2023-32695 is a MODERATE (CVSS 7.3) insufficient validation when decoding a vulnerability (CWE-20: Improper Input Validation) affecting Socket.io parser libraries in the npm ecosystem. The issue involves insufficient validation when decoding a socket.io packet. Remediation is available by upgrading affected packages to version 4.2.3, 3.4.3, 3.3.4.

CVE-2023-32695 at a Glance

CVE Identifier CVE-2023-32695
GHSA Identifier GHSA-cqmj-92xf-r6r9
Severity MODERATE
CVSS v3.1 Base Score 7.3
CWE Classification CWE-20: Improper Input Validation
Affected Product Socket.io parser
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 7.3

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality Low (C:L)
Integrity Low (I:L)
Availability Low (A:L)

How to Fix CVE-2023-32695

To remediate this vulnerability, upgrade all affected Socket.io parser dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

socket.io-parser fixed: 4.2.3 
npm install socket.io-parser@4.2.3
socket.io-parser fixed: 3.4.3 
npm install socket.io-parser@3.4.3
socket.io-parser fixed: 3.3.4 
npm install socket.io-parser@3.3.4
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

npm ls socket.io-parser

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2023-32695, inspect your project dependencies using npm:

npm ls socket.io-parser

Analyze the terminal output to locate any version of Socket.io parser in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 4.2.3), your application is affected.

Note: The npm ls socket.io-parser command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-20: Improper Input Validation, where the product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. In Socket.io parser, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### Impact A specially crafted Socket.IO packet can trigger an uncaught exception on the Socket.IO server, thus killing the Node.js process. ``` TypeError: Cannot convert object to primitive value at Socket.emit (node:events:507:25) at .../node_modules/socket.io/lib/socket.js:531:14 ``` ### Patches A fix has been released today (2023/05/22): - https://github.com/socketio/socket.io-parser/commit/3b78117bf6ba7e99d7a5cfc1ba54d0477554a7f3, included in `socket.io-parser@4.2.3` - https://github.com/socketio/socket.io-parser/commit/2dc3c92622dad113b8676be06f23b1ed46b02ced, included in `socket.io-parser@3.4.3` Another fix has been released for the `3.3.x` branch: - https://github.com/socketio/socket.io-parser/commit/ee006607495eca4ec7262ad080dd3a91439a5ba4, included in `socket.io-parser@3.3.4 | `socket.io` version | `socket.io-parser` version | Needs minor update? | |---------------------|---------------------------------------------------------------------------------------------------------|--------------------------------------| | `4.5.2...latest` | `~4.2.0` ([ref](https://github.com/socketio/socket.io/commit/9890b036cf942f6b6ad2afeb6a8361c32cd5d528)) | `npm audit fix` should be sufficient | | `4.1.3...4.5.1` | `~4.1.1` ([ref](https://github.com/socketio/socket.io/commit/7c44893d7878cd5bba1eff43150c3e664f88fb57)) | Please upgrade to `socket.io@4.6.x` | | `3.0.5...4.1.2` | `~4.0.3` ([ref](https://github.com/socketio/socket.io/commit/752dfe3b1e5fecda53dae899b4a39e6fed5a1a17)) | Please upgrade to `socket.io@4.6.x` | | `3.0.0...3.0.4` | `~4.0.1` ([ref](https://github.com/socketio/socket.io/commit/1af3267e3f5f7884214cf2ca4d5282d620092fb0)) | Please upgrade to `socket.io@4.6.x` | | `2.3.0...2.5.0` | `~3.4.0` ([ref](https://github.com/socketio/socket.io/commit/cf39362014f5ff13a17168b74772c43920d6e4fd)) | `npm audit fix` should be sufficient | ### Workarounds There is no known workaround except upgrading to a safe version. ### For more information If you have any questions or comments about this advisory: - Open a discussion [here](https://github.com/socketio/socket.io/discussions) Thanks to [@rafax00](https://github.com/rafax00) for the responsible disclosure.

CVE-2023-32695 Affected Socket.io parser Versions

3 component(s)
Fixed Versions:
4.2.33.4.33.3.4
Product / Package Ecosystem Affected Versions Fixed Version
socket.io-parser
npm/socket.io-parser
npm
≥ 4.0.4
< 4.2.3
4.2.3
socket.io-parser
npm/socket.io-parser
npm
≥ 3.4.0
< 3.4.3
3.4.3
socket.io-parser
npm/socket.io-parser
npm
< 3.3.4
3.3.4

References

GitHub Advisory / Wiki ADVISORY
https://github.com/socketio/socket.io-parser/security/advisories/GHSA-cqmj-92xf-r6r9
NVD — CVE-2023-32695 NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-32695
Security Fix Commit FIX COMMIT
https://github.com/socketio/socket.io-parser/commit/1c220ddbf45ea4b44bc8dbf6f9ae245f672ba1b9
Security Fix Commit FIX COMMIT
https://github.com/socketio/socket.io-parser/commit/2dc3c92622dad113b8676be06f23b1ed46b02ced
Security Fix Commit FIX COMMIT
https://github.com/socketio/socket.io-parser/commit/3b78117bf6ba7e99d7a5cfc1ba54d0477554a7f3
Security Fix Commit FIX COMMIT
https://github.com/socketio/socket.io-parser/commit/ee006607495eca4ec7262ad080dd3a91439a5ba4
Socket.io parser Source Repository REPOSITORY
https://github.com/socketio/socket.io-parser
Socket.io parser Release RELEASE
https://github.com/socketio/socket.io-parser/releases/tag/4.2.3

Frequently Asked Questions

What is CVE-2023-32695?
CVE-2023-32695 is a security vulnerability in Socket.io parser involving Insufficient validation when decoding a Socket.IO packet under CWE-20: Improper Input Validation.
Which Socket.io parser versions are affected?
Affected versions include releases prior to 4.2.3, 3.4.3, 3.3.4 across affected packages: socket.io-parser.
What version fixes CVE-2023-32695?
Upgrading to 4.2.3, 3.4.3, 3.3.4 (or the latest patched release for your respective branch) resolves the vulnerability.
Is socket.io-parser affected?
Yes, socket.io-parser is affected in releases prior to 4.2.3, 3.4.3, 3.3.4. Upgrade your dependency to 4.2.3, 3.4.3, 3.3.4 or later.
What is the CVSS score of CVE-2023-32695?
CVE-2023-32695 has a CVSS v3.1 base score of 7.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.
What CWE is associated with CVE-2023-32695?
CVE-2023-32695 is classified under CWE-20: Improper Input Validation (The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.).
How can I check npm dependencies for CVE-2023-32695?
Run the dependency tree command: 'npm ls socket.io-parser'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-cqmj-92xf-r6r9",
  "modified" : "2024-11-18T16:26:29Z",
  "published" : "2023-05-23T19:55:13Z",
  "aliases" : [ "CVE-2023-32695" ],
  "summary" : "Insufficient validation when decoding a Socket.IO packet",
  "details" : "### Impact\n\nA specially crafted Socket.IO packet can trigger an uncaught exception on the Socket.IO server, thus killing the Node.js process.\n\n```\nTypeError: Cannot convert object to primitive value\n       at Socket.emit (node:events:507:25)\n       at .../node_modules/socket.io/lib/socket.js:531:14\n```\n\n### Patches\n\nA fix has been released today (2023/05/22):\n\n- https://github.com/socketio/socket.io-parser/commit/3b78117bf6ba7e99d7a5cfc1ba54d0477554a7f3, included in `socket.io-parser@4.2.3`\n- https://github.com/socketio/socket.io-parser/commit/2dc3c92622dad113b8676be06f23b1ed46b02ced, included in `socket.io-parser@3.4.3`\n\n\nAnother fix has been released for the `3.3.x` branch:\n\n- https://github.com/socketio/socket.io-parser/commit/ee006607495eca4ec7262ad080dd3a91439a5ba4, included in `socket.io-parser@3.3.4\n\n| `socket.io` version | `socket.io-parser` version                                                                              | Needs minor update?                  |\n|---------------------|---------------------------------------------------------------------------------------------------------|--------------------------------------|\n| `4.5.2...latest`    | `~4.2.0` ([ref](https://github.com/socketio/socket.io/commit/9890b036cf942f6b6ad2afeb6a8361c32cd5d528)) | `npm audit fix` should be sufficient |\n| `4.1.3...4.5.1`     | `~4.1.1` ([ref](https://github.com/socketio/socket.io/commit/7c44893d7878cd5bba1eff43150c3e664f88fb57)) | Please upgrade to `socket.io@4.6.x`  |\n| `3.0.5...4.1.2`     | `~4.0.3` ([ref](https://github.com/socketio/socket.io/commit/752dfe3b1e5fecda53dae899b4a39e6fed5a1a17)) | Please upgrade to `socket.io@4.6.x`  |\n| `3.0.0...3.0.4`     | `~4.0.1` ([ref](https://github.com/socketio/socket.io/commit/1af3267e3f5f7884214cf2ca4d5282d620092fb0)) | Please upgrade to `socket.io@4.6.x`  |\n| `2.3.0...2.5.0`     | `~3.4.0` ([ref](https://github.com/socketio/socket.io/commit/cf39362014f5ff13a17168b74772c43920d6e4fd)) | `npm audit fix` should be sufficient |\n\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 a discussion [here](https://github.com/socketio/socket.io/discussions)\n\nThanks to [@rafax00](https://github.com/rafax00) for the responsible disclosure.\n",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "socket.io-parser"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "4.0.4"
      }, {
        "fixed" : "4.2.3"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "npm",
      "name" : "socket.io-parser"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "3.4.0"
      }, {
        "fixed" : "3.4.3"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "npm",
      "name" : "socket.io-parser"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "3.3.4"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/socketio/socket.io-parser/security/advisories/GHSA-cqmj-92xf-r6r9"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-32695"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/socketio/socket.io-parser/commit/1c220ddbf45ea4b44bc8dbf6f9ae245f672ba1b9"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/socketio/socket.io-parser/commit/2dc3c92622dad113b8676be06f23b1ed46b02ced"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/socketio/socket.io-parser/commit/3b78117bf6ba7e99d7a5cfc1ba54d0477554a7f3"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/socketio/socket.io-parser/commit/ee006607495eca4ec7262ad080dd3a91439a5ba4"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/socketio/socket.io-parser"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/socketio/socket.io-parser/releases/tag/4.2.3"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-20", "CWE-754" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-05-23T19:55:13Z",
    "nvd_published_at" : "2023-05-27T16:15:09Z"
  }
}