Vulnerability identifier: #VU66114

Vulnerability risk: Medium

CVSSv3.1: 4.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-41802

CWE-ID: CWE-732

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 user to bypass implemented security restrictions.

The vulnerability exists due to incorrect permissions assignment. A remote user with write permission to an entity alias ID can share a mount accessor with another user to acquire this other user’s policies by merging their identities.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Vault: 1.8.0 - 1.8.3, 1.7.0 - 1.7.4

Vault Enterprise: 1.8.0 - 1.8.3, 1.7.0 - 1.7.4

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External links
http://discuss.hashicorp.com/t/hcsec-2021-27-vault-merging-multiple-entity-aliases-for-the-same-mount-may-allow-privilege-escalation/

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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.