Privilege escalation: all users can access Admin-level API keys

高 7.2CVE-2021-39192 · BIT-ghost-2021-39192 · GHSA-j5c2-hm46-wp5c · 03/09/2021 公開 · 17/06/2026 更新

要点

CVE-2021-39192 は ghost (ghost), ghost に影響する深刻度「高」 (CVSS 7.2) の脆弱性です。
今後30日間に悪用される確率（EPSS）：1.0%（全脆弱性の 63.4% より高い）。
対処：4.10.0 以降に更新してください。

パッケージ	影響を受けるバージョン	修正済みバージョン
ghost ghost	`≥ 4.0.0, < 4.10.0`	`4.10.0`
ghost npm	`≥ 4.0.0, < 4.10.0`	`4.10.0`

概要

Impact

An error in the implementation of the limits service in 4.0.0 allows all authenticated users (including contributors) to view admin-level API keys via the integrations API endpoint, leading to a privilege escalation vulnerability.

Ghost(Pro) has already been patched. Self-hosters are impacted if running Ghost a version between 4.0.0 and 4.9.4. Immediate action should be taken to secure your site - see patches & workarounds below.

It is highly recommended to regenerate all API keys after patching or applying the workaround below.

Patches

Fixed in 4.10.0, all 4.x sites should upgrade as soon as possible.

Workarounds

Disable all non-Administrator accounts to prevent API access.

For more information

If you have any questions or comments about this advisory:

email us at [email protected]

Credits: Aden Yap Chuen Zhen, BAE Systems Applied Intelligence (Malaysia)

NVD の説明

Ghost is a Node.js content management system. An error in the implementation of the limits service between versions 4.0.0 and 4.9.4 allows all authenticated users (including contributors) to view admin-level API keys via the integrations API endpoint, leading to a privilege escalation vulnerability. This issue is patched in Ghost version 4.10.0. As a workaround, disable all non-Administrator accounts to prevent API access. It is highly recommended to regenerate all API keys after patching or applying the workaround.