Improper access control in Ghost

1) Improper access control

EUVDB-ID: #VU56888

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

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

The vulnerability exists due to an error in the implementation of the member email change functionality. A remote attacker can change the email address of arbitrary member accounts to one they control.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Ghost: 3.18.0 - 4.15.0

External links

http://github.com/TryGhost/Ghost/releases/tag/v4.15.1
http://github.com/TryGhost/Ghost/security/advisories/GHSA-65p7-pjj8-ggmr

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.