Vulnerability identifier: #VU81265

Vulnerability risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-3775

CWE-ID: CWE-269

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Vault Enterprise
Web applications / Modules and components for CMS

Vendor: HashiCorp

Description

The vulnerability allows a remote user to perform a denial of service (DoS) attack.

The vulnerability exists due to incorrect enforcement of Sentinel Role Governing Policy. A remote user can create a Role Governing Policy (RGP) in one namespace and use it to restrict resources in another, non-child namespace.

Sentinel RGP’s can be set by users authorized to write to the /sys/policies/rgp endpoint. These policies can be used to restrict or deny access to resources, but cannot grant additional access. As a result, this vulnerability is limited to denial of service.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Vault Enterprise: 1.14.0 - 1.14.3, 1.13.0 - 1.13.7, 1.12.0 - 1.12.11, 1.11.0 - 1.11.12, 1.10.0 - 1.10.11, 1.9.0 - 1.9.10, 1.8.0 - 1.8.12, 1.7.0 - 1.7.10, 1.6.0 - 1.6.7, 1.5.0 - 1.5.9, 1.4.0 - 1.4.7, 1.2.0 - 1.2.7, 1.3.0 - 1.3.10, 1.1.0 - 1.1.5, 1.0.0 - 1.0.3, 0.11.0 - 0.11.6

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External links
http://discuss.hashicorp.com/t/hcsec-2023-29-vault-enterprise-s-sentinel-rgp-policies-allowed-for-cross-namespace-denial-of-service/58653

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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.