#VU50454 Input validation error in Vault and Vault Enterprise - CVE-2021-3024

Vulnerability identifier: #VU50454

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-3024

CWE-ID: CWE-20

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 non-authenticated attacker to gain access to sensitive information.

HashiCorp Vault and Vault Enterprise disclosed the internal IP address of the Vault node when responding to some invalid, unauthenticated HTTP requests.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Vault: 1.5.0 - 1.5.6, 1.6.0 - 1.6.1

Vault Enterprise: 1.5.0 - 1.5.6, 1.6.0 - 1.6.1

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External links
https://discuss.hashicorp.com/t/hcsec-2021-02-vault-api-endpoint-exposed-internal-ip-address-without-authentication/20334

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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.