CVE-2023-1782 Nomad Unauthenticated Client Agent HTTP Request Privilege Escalation

What is CVE-2023-1782?

CVE-2023-1782 is a critical missing authorization vulnerability in HashiCorp Nomad, published on 5 Apr 2023. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

HashiCorp Nomad and Nomad Enterprise versions 1.5.0 up to 1.5.2 allow unauthenticated users to bypass intended ACL authorizations for clusters where mTLS is not enabled. This issue is fixed in version 1.5.3.

Weakness: CWE-862

Which versions are affected by CVE-2023-1782?

3 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-2023-1782?

Upgrade github.com/hashicorp/nomad to 1.5.3 or later.

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

Is CVE-2023-1782 being exploited?

There is no known exploitation of CVE-2023-1782 in the wild and no public exploit code.

Other vulnerabilities in HashiCorp Nomad

• 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
• CVE-2021-43415 Improper Authentication in HashiCorp Nomad High 8.8

Sources

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

Also known as GHSA-f8r8-h93m-mj77, GO-2023-1707, UBUNTU-CVE-2023-1782.