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Security Advisories: GSA_kwCzR0hTQS05Z2g4LXdwNTMtY2NjNs4AAwEB

ghost vulnerable to unauthorized newsletter modification via improper access controls

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

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:

Credits: Dave McDaniel and other members of Cisco Talos

Permalink: https://github.com/advisories/GHSA-9gh8-wp53-ccc6
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS05Z2g4LXdwNTMtY2NjNs4AAwEB
Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: over 1 year ago
Updated: about 1 year ago


CVSS Score: 8.5
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:N

Identifiers: GHSA-9gh8-wp53-ccc6, CVE-2022-41654
References: Repository: https://github.com/TryGhost/Ghost
Blast Radius: 22.7

Affected Packages

npm:ghost
Dependent packages: 8
Dependent repositories: 468
Downloads: 45,787 last month
Affected Version Ranges: >= 4.46.0, < 4.48.8, >= 5.0.0, < 5.22.7
Fixed in: 4.48.8, 5.22.7
All affected versions: 4.46.0, 4.46.1, 4.46.2, 4.47.0, 4.47.1, 4.47.2, 4.47.3, 4.47.4, 4.48.0, 4.48.1, 4.48.2, 4.48.3, 4.48.4, 4.48.5, 4.48.6, 4.48.7, 5.0.0, 5.0.1, 5.0.2, 5.1.0, 5.1.1, 5.2.0, 5.2.1, 5.2.2, 5.2.3, 5.2.4, 5.3.0, 5.3.1, 5.4.0, 5.4.1, 5.5.0, 5.6.0, 5.7.0, 5.7.1, 5.8.0, 5.8.1, 5.8.2, 5.8.3, 5.9.0, 5.9.1, 5.9.2, 5.9.3, 5.9.4, 5.10.0, 5.10.1, 5.11.0, 5.12.0, 5.12.1, 5.12.2, 5.12.3, 5.12.4, 5.13.0, 5.13.1, 5.13.2, 5.14.0, 5.14.1, 5.14.2, 5.15.0, 5.16.0, 5.16.1, 5.16.2, 5.17.0, 5.17.1, 5.17.2, 5.18.0, 5.19.0, 5.19.1, 5.19.2, 5.19.3, 5.20.0, 5.21.0, 5.22.0, 5.22.1, 5.22.2, 5.22.3, 5.22.4, 5.22.5, 5.22.6
All unaffected versions: 0.4.2, 0.5.0, 0.5.1, 0.5.2, 0.5.3, 0.5.4, 0.5.5, 0.5.6, 0.5.7, 0.5.8, 0.5.9, 0.5.10, 0.6.0, 0.6.1, 0.6.2, 0.6.3, 0.6.4, 0.7.0, 0.7.1, 0.7.2, 0.7.3, 0.7.4, 0.7.5, 0.7.6, 0.7.7, 0.7.8, 0.7.9, 0.8.0, 0.9.0, 0.10.1, 0.11.0, 0.11.1, 0.11.2, 0.11.3, 0.11.4, 0.11.5, 0.11.6, 0.11.7, 0.11.8, 0.11.9, 0.11.10, 0.11.11, 0.11.12, 0.11.13, 0.11.14, 1.0.0, 1.0.2, 1.1.0, 1.2.0, 1.3.0, 1.4.0, 1.5.0, 1.5.1, 1.5.2, 1.6.0, 1.6.1, 1.6.2, 1.7.0, 1.7.1, 1.8.0, 1.8.1, 1.8.2, 1.8.3, 1.8.4, 1.8.5, 1.8.6, 1.8.7, 1.9.0, 1.9.1, 1.10.0, 1.11.0, 1.11.1, 1.12.0, 1.12.1, 1.13.0, 1.14.0, 1.14.1, 1.15.0, 1.15.1, 1.16.0, 1.16.1, 1.16.2, 1.17.0, 1.17.1, 1.17.2, 1.17.3, 1.18.0, 1.18.1, 1.18.2, 1.18.3, 1.18.4, 1.19.0, 1.19.1, 1.19.2, 1.20.0, 1.20.1, 1.20.2, 1.20.3, 1.21.0, 1.21.1, 1.21.2, 1.21.3, 1.21.4, 1.21.5, 1.21.6, 1.21.7, 1.22.0, 1.22.1, 1.22.2, 1.22.3, 1.22.4, 1.22.5, 1.22.6, 1.22.7, 1.22.8, 1.23.0, 1.23.1, 1.24.0, 1.24.1, 1.24.2, 1.24.3, 1.24.4, 1.24.5, 1.24.6, 1.24.7, 1.24.8, 1.24.9, 1.25.0, 1.25.1, 1.25.2, 1.25.3, 1.25.4, 1.25.5, 1.25.6, 1.25.7, 1.25.8, 1.26.0, 1.26.1, 1.26.2, 2.0.0, 2.0.1, 2.0.2, 2.0.3, 2.1.0, 2.1.1, 2.1.2, 2.1.3, 2.1.4, 2.2.0, 2.2.1, 2.2.2, 2.2.3, 2.2.4, 2.3.0, 2.4.0, 2.5.0, 2.6.0, 2.6.1, 2.6.2, 2.7.0, 2.7.1, 2.8.0, 2.9.0, 2.9.1, 2.10.0, 2.10.1, 2.10.2, 2.11.0, 2.11.1, 2.12.0, 2.13.0, 2.13.1, 2.13.2, 2.14.0, 2.14.1, 2.14.2, 2.14.3, 2.15.0, 2.16.0, 2.16.1, 2.16.2, 2.16.3, 2.16.4, 2.17.0, 2.17.1, 2.17.2, 2.18.0, 2.18.1, 2.18.2, 2.18.3, 2.19.0, 2.19.1, 2.19.2, 2.19.3, 2.19.4, 2.20.0, 2.20.1, 2.21.0, 2.21.1, 2.22.0, 2.22.1, 2.22.2, 2.22.3, 2.23.0, 2.23.1, 2.23.2, 2.23.3, 2.23.4, 2.25.0, 2.25.1, 2.25.2, 2.25.3, 2.25.4, 2.25.5, 2.25.6, 2.25.7, 2.25.8, 2.25.9, 2.26.0, 2.27.0, 2.28.0, 2.28.1, 2.29.0, 2.29.1, 2.30.0, 2.30.1, 2.30.2, 2.31.0, 2.31.1, 2.32.0, 2.33.0, 2.34.0, 2.35.0, 2.36.0, 2.37.0, 2.37.1, 2.37.2, 2.38.0, 2.38.1, 2.38.2, 2.38.3, 3.0.0, 3.0.1, 3.0.2, 3.0.3, 3.1.0, 3.1.1, 3.2.0, 3.3.0, 3.4.0, 3.5.0, 3.5.1, 3.5.2, 3.6.0, 3.7.0, 3.8.0, 3.9.0, 3.10.0, 3.11.0, 3.12.0, 3.12.1, 3.13.0, 3.13.1, 3.13.2, 3.13.3, 3.13.4, 3.14.0, 3.15.0, 3.15.1, 3.15.2, 3.15.3, 3.16.0, 3.16.1, 3.17.0, 3.17.1, 3.18.0, 3.18.1, 3.19.0, 3.19.1, 3.19.2, 3.20.0, 3.20.1, 3.20.2, 3.20.3, 3.21.0, 3.21.1, 3.22.0, 3.22.1, 3.22.2, 3.23.0, 3.23.1, 3.24.0, 3.25.0, 3.26.0, 3.26.1, 3.27.0, 3.28.0, 3.29.0, 3.29.1, 3.29.2, 3.30.0, 3.30.1, 3.30.2, 3.31.0, 3.31.1, 3.31.2, 3.31.3, 3.31.4, 3.31.5, 3.32.1, 3.32.2, 3.33.0, 3.34.0, 3.34.1, 3.35.0, 3.35.1, 3.35.2, 3.35.3, 3.35.4, 3.35.5, 3.36.0, 3.37.0, 3.37.1, 3.38.0, 3.38.1, 3.38.2, 3.38.3, 3.39.0, 3.39.1, 3.39.2, 3.39.3, 3.40.0, 3.40.1, 3.40.2, 3.40.3, 3.40.4, 3.40.5, 3.41.0, 3.41.1, 3.41.2, 3.41.3, 3.41.4, 3.41.5, 3.41.6, 3.41.7, 3.41.8, 3.41.9, 3.42.0, 3.42.1, 3.42.2, 3.42.3, 3.42.4, 3.42.5, 3.42.6, 3.42.7, 3.42.8, 3.42.9, 4.0.0, 4.0.1, 4.1.0, 4.1.1, 4.1.2, 4.2.0, 4.2.1, 4.2.2, 4.3.0, 4.3.1, 4.3.2, 4.3.3, 4.4.0, 4.5.0, 4.6.0, 4.6.1, 4.6.2, 4.6.3, 4.6.4, 4.6.5, 4.6.6, 4.7.0, 4.8.0, 4.8.1, 4.8.2, 4.8.3, 4.8.4, 4.9.0, 4.9.1, 4.9.2, 4.9.3, 4.9.4, 4.10.0, 4.10.1, 4.10.2, 4.11.0, 4.12.0, 4.12.1, 4.13.0, 4.14.0, 4.15.0, 4.15.1, 4.16.0, 4.17.0, 4.17.1, 4.18.0, 4.19.0, 4.19.1, 4.20.0, 4.20.1, 4.20.2, 4.20.3, 4.20.4, 4.21.0, 4.22.0, 4.22.1, 4.22.2, 4.22.3, 4.22.4, 4.23.0, 4.24.0, 4.25.0, 4.25.1, 4.26.0, 4.26.1, 4.27.0, 4.27.1, 4.27.2, 4.28.0, 4.29.0, 4.30.0, 4.30.1, 4.31.0, 4.32.0, 4.32.1, 4.32.2, 4.32.3, 4.33.0, 4.33.1, 4.33.2, 4.34.0, 4.34.1, 4.34.2, 4.34.3, 4.35.0, 4.36.0, 4.36.1, 4.36.2, 4.36.3, 4.37.0, 4.38.0, 4.38.1, 4.39.0, 4.39.1, 4.40.0, 4.41.0, 4.41.1, 4.41.2, 4.41.3, 4.42.0, 4.42.1, 4.43.0, 4.43.1, 4.44.0, 4.45.0, 4.48.8, 4.48.9, 5.22.7, 5.22.8, 5.22.9, 5.22.10, 5.22.11, 5.23.0, 5.24.0, 5.24.1, 5.24.2, 5.25.0, 5.25.1, 5.25.2, 5.25.3, 5.25.4, 5.25.5, 5.26.0, 5.26.1, 5.26.2, 5.26.3, 5.26.4, 5.27.0, 5.28.0, 5.29.0, 5.30.0, 5.30.1, 5.31.0, 5.32.0, 5.33.0, 5.33.1, 5.33.2, 5.33.3, 5.33.4, 5.33.5, 5.33.6, 5.33.7, 5.33.8, 5.34.0, 5.34.1, 5.35.0, 5.35.1, 5.36.0, 5.36.1, 5.37.0, 5.38.0, 5.39.0, 5.40.0, 5.40.1, 5.40.2, 5.41.0, 5.42.0, 5.42.1, 5.42.2, 5.42.3, 5.43.0, 5.44.0, 5.45.0, 5.45.1, 5.46.0, 5.46.1, 5.47.0, 5.47.1, 5.47.2, 5.48.0, 5.48.1, 5.49.0, 5.49.1, 5.49.2, 5.49.3, 5.50.0, 5.50.1, 5.50.2, 5.50.3, 5.50.4, 5.51.0, 5.51.1, 5.51.2, 5.52.0, 5.52.1, 5.52.2, 5.52.3, 5.53.0, 5.53.1, 5.53.2, 5.53.3, 5.53.4, 5.54.0, 5.54.1, 5.54.2, 5.54.3, 5.54.4, 5.55.0, 5.55.1, 5.55.2, 5.56.0, 5.56.1, 5.57.0, 5.57.1, 5.57.2, 5.57.3, 5.58.0, 5.59.0, 5.59.1, 5.59.2, 5.59.3, 5.59.4, 5.60.0, 5.61.0, 5.61.1, 5.61.2, 5.61.3, 5.62.0, 5.63.0, 5.64.0, 5.65.0, 5.65.1, 5.66.0, 5.66.1, 5.67.0, 5.68.0, 5.69.0, 5.69.1, 5.69.2, 5.69.3, 5.69.4, 5.70.0, 5.70.1, 5.70.2, 5.71.0, 5.71.1, 5.71.2, 5.72.0, 5.72.1, 5.72.2, 5.73.0, 5.73.1, 5.73.2, 5.74.0, 5.74.1, 5.74.2, 5.74.3, 5.74.4, 5.74.5, 5.75.0, 5.75.1, 5.75.2, 5.75.3, 5.76.0, 5.76.1, 5.76.2, 5.77.0, 5.78.0, 5.79.0, 5.79.1, 5.79.3, 5.79.4, 5.79.5, 5.79.6, 5.80.0, 5.80.1, 5.80.2, 5.80.3, 5.80.4, 5.80.5, 5.81.0, 5.81.1, 5.82.0, 5.82.1, 5.82.2