CVE-2023-27564: N8n N8n Information Disclosure Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-r9xw-p7wj-w792
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CVSS 7.5
CWE-668
Published
Advisory Summary

CVE-2023-27564 is a HIGH (CVSS 7.5) n8n information disclosure vulnerability vulnerability (CWE-668: Exposure of Resource to Wrong Sphere) affecting N8n libraries in the npm ecosystem. The issue involves n8n information disclosure vulnerability. Remediation is available by upgrading affected packages to version 0.216.1.

CVE-2023-27564 at a Glance

CVE Identifier CVE-2023-27564
GHSA Identifier GHSA-r9xw-p7wj-w792
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-668: Exposure of Resource to Wrong Sphere
Affected Product N8n
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 7.5

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:H/I:N/A:N).

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 High (C:H)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2023-27564

To remediate this vulnerability, upgrade all affected N8n dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

n8n fixed: 0.216.1 
npm install n8n@0.216.1
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 n8n

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2023-27564, inspect your project dependencies using npm:

npm ls n8n

Analyze the terminal output to locate any version of N8n in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.216.1), your application is affected.

Note: The npm ls n8n 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-668: Exposure of Resource to Wrong Sphere, where the product exposes a resource to the wrong control sphere, providing unintended actors with inappropriate access to the resource. In N8n, 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

The n8n package prior to 0.216.1 for Node.js allows Information Disclosure.

CVE-2023-27564 Affected N8n Versions

1 component(s)
Fixed Versions:
0.216.1
Product / Package Ecosystem Affected Versions Fixed Version
n8n
npm/n8n
npm
< 0.216.1
0.216.1

References

NVD — CVE-2023-27564 NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-27564
N8n Source Repository REPOSITORY
https://github.com/n8n-io/n8n/pull/5525
Security Fix Commit FIX COMMIT
https://github.com/n8n-io/n8n/commit/27adea70459329fc0dddabee69e10c9d1453835f
N8n Source Repository REPOSITORY
https://github.com/n8n-io/n8n
N8n Release RELEASE
https://github.com/n8n-io/n8n/releases/tag/n8n%400.216.1
N8n Security Information SECURITY
https://security.netapp.com/advisory/ntap-20230622-0007
www.synacktiv.com/sites/default/files... WEB
https://www.synacktiv.com/sites/default/files/2023-05/Synacktiv-N8N-Multiple-Vulnerabilities_0.pdf

Frequently Asked Questions

What is CVE-2023-27564?
CVE-2023-27564 is a security vulnerability in N8n involving n8n Information Disclosure vulnerability under CWE-668: Exposure of Resource to Wrong Sphere.
Which N8n versions are affected?
Affected versions include releases prior to 0.216.1 across affected packages: n8n.
What version fixes CVE-2023-27564?
Upgrading to 0.216.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is n8n affected?
Yes, n8n is affected in releases prior to 0.216.1. Upgrade your dependency to 0.216.1 or later.
What is the CVSS score of CVE-2023-27564?
CVE-2023-27564 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
What CWE is associated with CVE-2023-27564?
CVE-2023-27564 is classified under CWE-668: Exposure of Resource to Wrong Sphere (The product exposes a resource to the wrong control sphere, providing unintended actors with inappropriate access to the resource.).
How can I check npm dependencies for CVE-2023-27564?
Run the dependency tree command: 'npm ls n8n'. 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-r9xw-p7wj-w792",
  "modified" : "2023-05-17T21:33:32Z",
  "published" : "2023-05-10T15:30:22Z",
  "aliases" : [ "CVE-2023-27564" ],
  "summary" : "n8n Information Disclosure vulnerability",
  "details" : "The n8n package prior to 0.216.1 for Node.js allows Information Disclosure.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "n8n"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.216.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-27564"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/n8n-io/n8n/pull/5525"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/n8n-io/n8n/commit/27adea70459329fc0dddabee69e10c9d1453835f"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/n8n-io/n8n"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/n8n-io/n8n/releases/tag/n8n%400.216.1"
  }, {
    "type" : "WEB",
    "url" : "https://security.netapp.com/advisory/ntap-20230622-0007"
  }, {
    "type" : "WEB",
    "url" : "https://www.synacktiv.com/sites/default/files/2023-05/Synacktiv-N8N-Multiple-Vulnerabilities_0.pdf"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-668" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-05-11T20:46:13Z",
    "nvd_published_at" : "2023-05-10T15:15:09Z"
  }
}