SB2023031408 - Multiple vulnerabilities in Nomad

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) Improper Privilege Management (CVE-ID: CVE-2023-1299)

The vulnerability allows a remote user to escalate privileges.

The vulnerability exists due to improper privilege management within the Nomad Job Submitter where a workload identity without any workload-associated policies was treated as a management token. A remote user can escalate privileges within the application.

2) Security features bypass (CVE-ID: CVE-2023-1296)

The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists due to an error in the workload-associated policy with a deny capability, which was ignored for the workload's own variables. A remote attacker can bypass implemented ACLs and gain unauthorized access to the application.

Remediation

Install update from vendor's website.

References

• https://github.com/hashicorp/nomad/releases/tag/v1.5.1
• https://github.com/hashicorp/nomad/issues/16419
• https://github.com/hashicorp/nomad/issues/16349
• https://github.com/hashicorp/nomad/releases/tag/v1.4.6