Security restrictions bypass in HashiCorp Vault Enterprise

1) Security restrictions bypass

EUVDB-ID: #VU50969

Risk: Medium

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

CVE-ID: CVE-2020-35453

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists due to the Sentinel EGP policy feature incorrectly allowed requests to be processed in parent and sibling namespaces. A remote attacker can gain unauthorized access to sensitive information.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Vault Enterprise: 1.5.0 - 1.6.0

CPE2.3

• cpe:2.3:a:hashicorp:vault_enterprise:1.5.0:*:*:*:*:*:*:*
• cpe:2.3:a:hashicorp:vault_enterprise:1.5.1:*:*:*:*:*:*:*
• cpe:2.3:a:hashicorp:vault_enterprise:1.5.2:*:*:*:*:*:*:*
• cpe:2.3:a:hashicorp:vault_enterprise:1.5.3:*:*:*:*:*:*:*
• cpe:2.3:a:hashicorp:vault_enterprise:1.5.4:*:*:*:*:*:*:*
• cpe:2.3:a:hashicorp:vault_enterprise:1.5.5:*:*:*:*:*:*:*
• cpe:2.3:a:hashicorp:vault_enterprise:1.6.0:*:*:*:*:*:*:*

External links

https://discuss.hashicorp.com/t/hcsec-2020-24-vault-enterprise-s-sentinel-egp-policies-may-impact-parent-or-sibling-namespaces/18983
https://github.com/hashicorp/vault/blob/master/CHANGELOG.md#161

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.