CVE-2023-1296 Nomad ACLs Can Not Deny Access to Workload's Own Variables

What is CVE-2023-1296?

CVE-2023-1296 is a low-severity missing authorization vulnerability in HashiCorp Nomad, published on 14 Mar 2023. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

HashiCorp Nomad and Nomad Enterprise 1.4.0 up to 1.5.0 did not correctly enforce deny policies applied to a workload’s variables. Fixed in 1.4.6 and 1.5.1.

Weakness: CWE-862, CWE-682

Which versions are affected by CVE-2023-1296?

5 open source packages ship an affected version, including github.com/hashicorp/nomad. It affects 1 product.

Products include Hashicorp Nomad.

How do I fix CVE-2023-1296?

Upgrade github.com/hashicorp/nomad to a fixed version for your release line: 1.4.6 or 1.5.1.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2023-1296 being exploited?

There is no known exploitation of CVE-2023-1296 in the wild and no public exploit code.

Other vulnerabilities in HashiCorp Nomad

• CVE-2023-1782 Nomad Unauthenticated Client Agent HTTP Request Privilege Escalation Critical 10.0
• CVE-2022-30324 Privilege escalation in Hashicorp Nomad Critical 9.8
• CVE-2020-7956 Improper Certificate Validation in HashiCorp Nomad Critical 9.8
• CVE-2019-12618 Hashicorp Nomad Access Control Issues Critical 9.8
• CVE-2020-27195 Use After Free in HashiCorp Nomad Critical 9.1

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-hhvx-8755-4cvw, GO-2023-1899, UBUNTU-CVE-2023-1296.