GHSA-9GH8-WP53-CCC6

Vulnerability from github – Published: 2022-11-28 22:06 – Updated: 2022-12-30 01:41
VLAI?
Summary
ghost vulnerable to unauthorized newsletter modification via improper access controls
Details

Impact

On sites where members is enabled (this is the default) it is possible for members (unprivileged users) to make changes to newsletter settings. This gives unprivileged users the ability to view and change settings they were not intended to have access to. They are not able to escalate their privileges permanently or get access to further information. This issue was caused by a gap in our API validation for nested objects.

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 between v4.46.0 and v4.48.7 or any version of v5 prior to v5.22.7. Immediate action should be taken to secure your site - see patches & workarounds below.

Patches

  • v4.48.8 / v5.22.7 are patched for all known exploits.
  • v4.48.9 / v5.24.1 contain deeper fixes to the API to close the potential for this vulnerability to appear elsewhere or regress

Workarounds

The known exploit can be prevented by disabling members until an update can be performed.

References

For more information

If you have any questions or comments about this advisory: * Email us at security@ghost.org

Credits: Dave McDaniel and other members of Cisco Talos

Severity ?
8.5 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:N
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{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "ghost"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.0.0"
            },
            {
              "fixed": "5.22.7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "npm",
        "name": "ghost"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.46.0"
            },
            {
              "fixed": "4.48.8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2022-41654"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-284"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2022-11-28T22:06:24Z",
    "nvd_published_at": "2022-12-22T10:15:00Z",
    "severity": "HIGH"
  },
  "details": "### Impact\n\nOn sites where members is enabled (this is the default) it is possible for members (unprivileged users) to make changes to newsletter settings. This gives unprivileged users the ability to view and change settings they were not intended to have access to. They are not able to escalate their privileges permanently or get access to further information. This issue was caused by a gap in our API validation for nested objects.\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 between v4.46.0 and v4.48.7 or any version of v5 prior to v5.22.7. Immediate action should be taken to secure your site - see patches \u0026 workarounds below.\n\n### Patches\n-  v4.48.8 / v5.22.7 are patched for all known exploits.\n-  v4.48.9 / v5.24.1 contain deeper fixes to the API to close the potential for this vulnerability to appear elsewhere or regress \n\n### Workarounds\nThe known exploit can be prevented by [disabling members](https://ghost.org/help/can-i-disable-memberships/) until an update can be performed.\n\n### References\n- [forum post](https://forum.ghost.org/t/security-update-available-for-ghost-4-x-and-4-x/34475)\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Email us at [security@ghost.org](mailto:security@ghost.org)\n\n---\n\nCredits: Dave McDaniel and other members of [Cisco Talos](https://talosintelligence.com/vulnerability_reports)",
  "id": "GHSA-9gh8-wp53-ccc6",
  "modified": "2022-12-30T01:41:15Z",
  "published": "2022-11-28T22:06:24Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/TryGhost/Ghost/security/advisories/GHSA-9gh8-wp53-ccc6"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-41654"
    },
    {
      "type": "WEB",
      "url": "https://forum.ghost.org/t/security-update-available-for-ghost-4-48-7-and-5-22-6/34475"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/TryGhost/Ghost"
    },
    {
      "type": "WEB",
      "url": "https://talosintelligence.com/vulnerability_reports/TALOS-2022-1624"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "ghost vulnerable to unauthorized newsletter modification via improper access controls"
}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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