#VU74186 Information disclosure in Vault and Vault Enterprise - CVE-2023-25000

Vulnerability identifier: #VU74186

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-2023-25000

CWE-ID: CWE-200

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 Shamir implementation uses precomputed table lookups. A remote user can perform a cache-timing attack and recover the Shamir shares.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Vault: 1.0.0 - 1.0.3, 1.1.0 - 1.13.0, 1.2.0 - 1.2.7, 1.3.0 - 1.3.10, 1.4.0 - 1.4.7, 1.5.0 - 1.5.9, 1.6.0 - 1.6.7, 1.7.0 - 1.7.10, 1.8.0 - 1.8.12, 1.9.0 - 1.9.10

Vault Enterprise: 1.0.0 - 1.0.3, 1.1.0 - 1.13.0, 1.2.0 - 1.2.7, 1.3.0 - 1.3.10, 1.4.0 - 1.4.7, 1.5.0 - 1.5.9, 1.6.0 - 1.6.7, 1.7.0 - 1.7.10, 1.8.0 - 1.8.12, 1.9.0 - 1.9.10

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External links
https://discuss.hashicorp.com/t/hcsec-2023-10-vault-vulnerable-to-cache-timing-attacks-during-seal-and-unseal-operations/52078

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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.