SB2023031408 - Multiple vulnerabilities in Nomad

Description

This security bulletin contains information about 2 vulnerabilities.

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

CWE-ID: CWE-269 - Improper Privilege Management

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green

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)

CWE-ID: CWE-254 - Security Features

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green

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