#VU66117 Improper Certificate Validation in Vault and Vault Enterprise - CVE-2022-25243

Vulnerability identifier: #VU66117

Vulnerability risk: Medium

CVSSv4.0: 4.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-25243

CWE-ID: CWE-295

Exploitation vector: Network

Exploit availability: No

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

Vendor: HashiCorp

Description

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

The vulnerability exists due to software allows the PKI secrets engine under certain configurations to issue wildcard certificates to authorized users for a specified domain, even if the PKI role policy attribute allow_subdomains is set to false. A remote user can bypass implemented security restriction and issue wildcard certificates.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Vault: 1.8.0 - 1.8.8, 1.9.0 - 1.9.3

Vault Enterprise: 1.8.0 - 1.8.8, 1.9.0 - 1.9.3

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External links
https://discuss.hashicorp.com/t/hcsec-2022-09-vault-pki-secrets-engine-policy-results-in-incorrect-wildcard-certificate-issuance/36600

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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.