Vulnerability identifier: #VU78445

Vulnerability risk: Low

CVSSv3.1: 2.4 [CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-3072

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Nomad Enterprise
Web applications / Modules and components for CMS
Nomad
Server applications / Virtualization software

Vendor: HashiCorp

Description

The vulnerability allows a remote user to compromise the target system.

The vulnerability exists due to ACL policies using a block without a label which generates unexpected results. A remote administrator can create policies that allow access to unintended resources.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Nomad Enterprise: 0.0.0 - 1.5.6

Nomad: 1.5.0 - 1.5.6, 1.3.0 - 1.3.15, 1.2.0 - 1.2.16, 1.1.0 - 1.1.18, 1.0.0 - 1.0.18, 0.12.0 - 0.12.12, 0.10.0 - 0.10.9, 0.11.0 - 0.11.8, 0.9.0 - 0.9.7, 0.8.0 - 0.8.7, 0.7.0 - 0.7.1

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External links
http://discuss.hashicorp.com/t/hcsec-2023-20-nomad-acl-policies-without-label-are-applied-to-unexpected-resources/56270
http://github.com/hashicorp/nomad/issues/17908

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Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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