#VU78445 Input validation error in Nomad Enterprise and Nomad - CVE-2023-3072

Vulnerability identifier: #VU78445

Vulnerability risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

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: 0.0.0, 0.7.0 - 0.7.1, 0.8.0 - 0.8.7, 0.9.0 - 0.9.7, 0.10.0 - 0.12.12, 1.0.0 - 1.0.18, 1.1.0 - 1.1.18, 1.2.0 - 1.2.16, 1.3.0 - 1.3.15, 1.4.0, 1.4.1, 1.4.2, 1.4.3, 1.4.4, 1.4.5, 1.4.6, 1.4.7, 1.4.8, 1.4.9, 1.4.10, 1.5.0 - 1.5.6

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