#VU87103 Improper authentication in Vault and Vault Enterprise - CVE-2024-2048

Vulnerability identifier: #VU87103

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-2024-2048

CWE-ID: CWE-287

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 process.

The vulnerability exists due to improper validation of client TLS certificates when configured with a non-CA certificate as trusted certificate. A remote attacker can create a specially crafted certificate file to bypass authentication process and gain unauthorized access to the application.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Vault: 1.14.0 - 1.15.4

Vault Enterprise: 1.14.0 - 1.15.4

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External links
https://discuss.hashicorp.com/t/hcsec-2024-05-vault-cert-auth-method-did-not-correctly-validate-non-ca-certificates/63382

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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.