Improper access control in Ghost

1) Improper access control

EUVDB-ID: #VU69656

Risk: Low

CVSSv4.0: 2.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/U:Clear]

CVE-ID: CVE-2022-41654

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: Yes

Description

The vulnerability allows a remote user to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper API validation for nested objects. A remote user can bypass implemented security restrictions and make changes to newsletter settings.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Ghost: 4.46.0 - 5.22.6

CPE2.3

• cpe:2.3:a:ghost:ghost:*:*:*:*:*:*:*:*
• cpe:2.3:a:ghost:ghost:4.47.3:*:*:*:*:*:*:*
• cpe:2.3:a:ghost:ghost:4.47.4:*:*:*:*:*:*:*
• cpe:2.3:a:ghost:ghost:4.48.0:*:*:*:*:*:*:*
• cpe:2.3:a:ghost:ghost:4.48.1:*:*:*:*:*:*:*

External links

https://github.com/TryGhost/Ghost/security/advisories/GHSA-9gh8-wp53-ccc6

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.