Improper access control in Harbor

1) Improper access control

EUVDB-ID: #VU21322

Risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-16097

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 improper access restrictions within "core/api/user.go" when processing HTTP POST requests to "/api/users" API, when Harbor is configured to use DB as authentication backend. A remote non-authenticated attacker can send a specially crafted HTTP request to the vulnerable API endpoint and create an administrative user account.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Harbor: 1.7.0 - 1.8.2

External links

http://github.com/goharbor/harbor/commit/b6db8a8a106259ec9a2c48be8a380cb3b37cf517
http://github.com/goharbor/harbor/compare/v1.8.2...v1.9.0-rc1
http://github.com/goharbor/harbor/releases/tag/v1.7.6
http://github.com/goharbor/harbor/releases/tag/v1.8.3
http://unit42.paloaltonetworks.com/critical-vulnerability-in-harbor-enables-privilege-escalation-from-zero-to-admin-cve-2019-16097/

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.