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Security Advisories: GSA_kwCzR0hTQS03djI4LWcycHEtZ2dnOM4AArtH

Ghost vulnerable to remote code execution in locale setting change

Impact

A vulnerability in an upstream library means an authenticated attacker can abuse locale input to execute arbitrary commands from a file that has previously been uploaded using the file upload functionality in the post editor.

Patches

Fixed in 5.2.3, all 5.x sites should update as soon as possible.
Fixed in 4.48.2, all 4.x sites should update as soon as possible.

Workarounds

Patched versions of Ghost add validation to the locale input to prevent execution of arbitrary files. Updating Ghost is the quickest complete solution.

As a workaround, if for any reason you cannot update your Ghost instance, you can block the POST /ghost/api/admin/settings/ endpoint, which will also disable updating settings for your site.

For more information

If you have any questions or comments about this advisory:

Credits

Permalink: https://github.com/advisories/GHSA-7v28-g2pq-ggg8
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS03djI4LWcycHEtZ2dnOM4AArtH
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: almost 2 years ago
Updated: over 1 year ago


CVSS Score: 6.6
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:L

Identifiers: GHSA-7v28-g2pq-ggg8
References: Repository: https://github.com/TryGhost/Ghost
Blast Radius: 17.6

Affected Packages

npm:ghost
Dependent packages: 8
Dependent repositories: 468
Downloads: 48,713 last month
Affected Version Ranges: >= 5.0.0, < 5.2.3, < 4.48.2
Fixed in: 5.2.3, 4.48.2
All affected 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, 4.46.0, 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, 5.0.0, 5.0.1, 5.0.2, 5.1.0, 5.1.1, 5.2.0, 5.2.1, 5.2.2
All unaffected versions: 4.48.2, 4.48.3, 4.48.4, 4.48.5, 4.48.6, 4.48.7, 4.48.8, 4.48.9, 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, 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, 5.82.3