Vulnerability identifier: #VU66116

Vulnerability risk: Low

CVSSv3.1: 4.3 [CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-45042

CWE-ID: CWE-264

Exploitation vector: Network

Exploit availability: No

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

Vendor: HashiCorp

Description

The vulnerability allows a remote user to perform a denial of service (DoS) attack.

The vulnerability exists due to application does not properly impose security restrictions in clusters using the Integrated Storage backend. A remote user with write permissions to a kv secrets engine can cause a panic and denial of service of the storage backend.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Vault Enterprise: 1.9.0, 1.8.0 - 1.8.5, 1.7.0 - 1.7.6, 1.6.0 - 1.6.7, 1.5.0 - 1.5.9, 1.4.0 - 1.4.7

Vault: 1.9.0, 1.8.0 - 1.8.5, 1.7.0 - 1.7.6, 1.6.0 - 1.6.7, 1.5.0 - 1.5.9, 1.4.0 - 1.4.7

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External links
http://discuss.hashicorp.com/t/hcsec2-21-33-vault-s-kv-secrets-engine-with-integrated-storage-exposed-to-authenticated-denial-of-service/33157
http://www.hashicorp.com/blog/category/vault

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

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