#VU88186 Improper Certificate Validation in Vault and Vault Enterprise - CVE-2024-2660

Vulnerability identifier: #VU88186

Vulnerability risk: Medium

CVSSv4.0: 6.9 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-2660

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 attacker to bypass authentication.

The vulnerability exists due to the TLS certificates auth method does not correctly validate OCSP responses when one or more OCSP sources were configured. A remote attacker can successfully authenticate via Vault’s TLS certificate authentication method with incorrect certificate status information.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Vault: 1.14.0 - 1.16.0

Vault Enterprise: 1.14.0 - 1.16.0

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External links
https://discuss.hashicorp.com/t/hcsec-2024-07-vault-tls-cert-auth-method-did-not-correctly-validate-ocsp-responses/64573

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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