Multiple vulnerabilities in Nomad

Published: 2023-03-14

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2023-1299 CVE-2023-1296
CWE-ID	CWE-269 CWE-254
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	Nomad Enterprise Web applications / Modules and components for CMS
Vendor	HashiCorp

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Improper Privilege Management

EUVDB-ID: #VU73273

Risk: Medium

CVSSv4.0: 1.3 [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]

CVE-ID: CVE-2023-1299

CWE-ID: CWE-269 - Improper Privilege Management

Exploit availability: No

Description

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.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Nomad Enterprise: 1.5.0

CPE2.3

cpe:2.3:a:hashicorp:nomad_enterprise:1.5.0:*:*:*:*:nomad:*:*

External links

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

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Security features bypass

EUVDB-ID: #VU73272

Risk: Medium

CVSSv4.0: 2.7 [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]

CVE-ID: CVE-2023-1296

CWE-ID: CWE-254 - Security Features

Exploit availability: No

Description

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.