GHSA-65p7-pjj8-ggmr – ghost

Package

Manager: npm
Name: ghost
Vulnerable Version: >=3.18.0 <3.42.6 || >=4.0.0 <4.15.1

Severity

Level: Medium

CVSS v3.1: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

EPSS: N/A pctlN/A

Details

Member account takeover ### Impact An error in the implementation of the member email change functionality allows unauthenticated users to change the email address of arbitrary member accounts to one they control by crafting a request to the relevant API endpoint, and validating the new address via magic link sent to the new email address. Ghost(Pro) has already been patched. Self-hosters are impacted if running Ghost a version between 3.18.0 and 4.15.0 with members functionality enabled. ### Patches Fixed in 4.15.1, all 4.x sites should upgrade as soon as possible. Fixed in 3.42.6, all 3.x sites should upgrade as soon as possible. ### Workarounds The patch in 4.15.1 and 3.42.6 adds a new authenticated endpoint for updating member email addresses. 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 /members/api/send-magic-link/` endpoint, which will also disable member login and signup for your site. ### For more information If you have any questions or comments about this advisory: * Email us at [security@ghost.org](mailto:security@ghost.org)

Metadata

Created: 2021-09-23T23:18:42Z
Modified: 2021-09-23T21:14:22Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/09/GHSA-65p7-pjj8-ggmr/GHSA-65p7-pjj8-ggmr.json
CWE IDs: []
Alternative ID: N/A
Finding: F039
Auto approve: 1