CVE-2023-31133: Ghost Ghost Vulnerable To Information Disclosure Vulnerability

HIGH
Advisory Identifier: GHSA-r97q-ghch-82j9
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CVSS 7.5
CWE-200
Published
Advisory Summary

CVE-2023-31133 is a HIGH (CVSS 7.5) ghost vulnerable to information disclosure vulnerability (CWE-200: Exposure of Sensitive Information to an Unauthorized Actor) affecting Ghost libraries in the npm ecosystem. The issue involves ghost vulnerable to information disclosure of private api fields. Remediation is available by upgrading affected packages to version 5.46.1.

CVE-2023-31133 at a Glance

CVE Identifier CVE-2023-31133
GHSA Identifier GHSA-r97q-ghch-82j9
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
Affected Product Ghost
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-2023-31133

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

ghost fixed: 5.46.1 
npm install ghost@5.46.1
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 ghost

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2023-31133, inspect your project dependencies using npm:

npm ls ghost

Analyze the terminal output to locate any version of Ghost in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 5.46.1), your application is affected.

Note: The npm ls ghost 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-200: Exposure of Sensitive Information to an Unauthorized Actor, where the product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. In Ghost, 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 Due to a lack of validation when filtering on the public API endpoints, it is possible to reveal private fields via a brute force attack. Ghost(Pro) has already been patched. We can find no evidence that the issue was exploited on Ghost(Pro) prior to the patch being added. Self-hosters are impacted if running Ghost a version below v5.46.1. Immediate action should be taken to secure your site - see patches and workarounds below. ### Patches v5.46.1 contains a fix for this issue. ### Workarounds Add a block for requests to `/ghost/api/content/*` where the `filter` query parameter contains `password` or `email`. ### For more information If you have any questions or comments about this advisory: * Email us at [security@ghost.org](mailto:security@ghost.org)

CVE-2023-31133 Affected Ghost Versions

1 component(s)
Fixed Versions:
5.46.1
Product / Package Ecosystem Affected Versions Fixed Version
ghost
npm/ghost
npm
< 5.46.1
5.46.1

References

GitHub Advisory / Wiki ADVISORY
https://github.com/TryGhost/Ghost/security/advisories/GHSA-r97q-ghch-82j9
NVD — CVE-2023-31133 NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-31133
Security Fix Commit FIX COMMIT
https://github.com/TryGhost/Ghost/commit/b3caf16005289cc9909488391b4a26f3f4a66a90
Ghost Source Repository REPOSITORY
https://github.com/TryGhost/Ghost
Ghost Release RELEASE
https://github.com/TryGhost/Ghost/releases/tag/v5.46.1

Frequently Asked Questions

What is CVE-2023-31133?
CVE-2023-31133 is a security vulnerability in Ghost involving Ghost vulnerable to information disclosure of private API fields under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor.
Which Ghost versions are affected?
Affected versions include releases prior to 5.46.1 across affected packages: ghost.
What version fixes CVE-2023-31133?
Upgrading to 5.46.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is ghost affected?
Yes, ghost is affected in releases prior to 5.46.1. Upgrade your dependency to 5.46.1 or later.
What is the CVSS score of CVE-2023-31133?
CVE-2023-31133 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-2023-31133?
CVE-2023-31133 is classified under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor (The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.).
How can I check npm dependencies for CVE-2023-31133?
Run the dependency tree command: 'npm ls ghost'. 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-r97q-ghch-82j9",
  "modified" : "2023-05-03T21:57:10Z",
  "published" : "2023-05-03T21:57:10Z",
  "aliases" : [ "CVE-2023-31133" ],
  "summary" : "Ghost vulnerable to information disclosure of private API fields",
  "details" : "### Impact\n\nDue to a lack of validation when filtering on the public API endpoints, it is possible to reveal private fields via a brute force attack.\n\nGhost(Pro) has already been patched. We can find no evidence that the issue was exploited on Ghost(Pro) prior to the patch being added.\n\nSelf-hosters are impacted if running Ghost a version below v5.46.1. Immediate action should be taken to secure your site - see patches and workarounds below.\n\n### Patches\n\nv5.46.1 contains a fix for this issue.\n\n### Workarounds\n\nAdd a block for requests to `/ghost/api/content/*` where the `filter` query parameter contains `password` or `email`.\n\n### For more information\n\nIf you have any questions or comments about this advisory:\n\n* Email us at [security@ghost.org](mailto:security@ghost.org)",
  "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" : "ghost"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "5.46.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/TryGhost/Ghost/security/advisories/GHSA-r97q-ghch-82j9"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-31133"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/TryGhost/Ghost/commit/b3caf16005289cc9909488391b4a26f3f4a66a90"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/TryGhost/Ghost"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/TryGhost/Ghost/releases/tag/v5.46.1"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-200" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-05-03T21:57:10Z",
    "nvd_published_at" : "2023-05-08T21:15:11Z"
  }
}