#VU78804 Observable Response Discrepancy in Vault and Vault Enterprise - CVE-2023-3462

Vulnerability identifier: #VU78804

Vulnerability risk: Medium

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

CVE-ID: CVE-2023-3462

CWE-ID: CWE-204

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 gain access to potentially sensitive information.

The vulnerability exists due to the observable response discrepancy issue in the LDAP auth method. A remote user can enumerate valid accounts.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Vault: 1.13.0 - 1.14.0

Vault Enterprise: 1.13.0 - 1.14.0

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External links
https://discuss.hashicorp.com/t/hcsec-2023-24-vaults-ldap-auth-method-allows-for-user-enumeration/56714

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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.