CVE-2023-25000: Vault Vulnerable to Cache-Timing Attacks During Seal and Unseal Operations
A flaw was found in the Hashicorp vault. This flaw allows an attacker with access to and the ability to observe a large number of unseal operations on the host through a side channel to reduce the search space of a brute-force effort to recover the Shamir shares.
Other sources
HashiCorp Vault's implementation of Shamir's secret sharing used precomputed table lookups, and was vulnerable to cache-timing attacks. An attacker with access to, and the ability to observe a large number of unseal operations on the host through a side channel may reduce the search space of a brute force effort to recover the Shamir shares. Fixed in Vault 1.13.1, 1.12.5, and 1.11.9.
Affected Software
Remediation
Event History
Parent advisories
This vulnerability appears in the following advisories.
Frequently Asked Questions
What is the vulnerability ID?
The vulnerability ID is CVE-2023-25000.
What is the severity of CVE-2023-25000?
The severity of CVE-2023-25000 is medium (5).
Which software is affected by CVE-2023-25000?
The software affected by CVE-2023-25000 is HashiCorp Vault.
How can an attacker exploit CVE-2023-25000?
An attacker with access to, and the ability to observe a large number of unseal operations on the host through a side channel may reduce the search space of a brute force attack.
How do I fix CVE-2023-25000?
To fix CVE-2023-25000, update HashiCorp Vault to version 1.13.1, 1.12.5, or 1.11.9.