GO-2023-1709

Dashboard / Vulnerabilities / GO-2023-1709

GO-2023-1709

Summary: Cache-timing attacks in Shamir's secret sharing in github.com/hashicorp/vault

Details: HashiCorp Vault's implementation of Shamir's secret sharing uses precomputed table lookups, and is 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.

References: https://github.com/hashicorp/vault/pull/19495, https://discuss.hashicorp.com/t/hcsec-2023-10-vault-vulnerable-to-cache-timing-attacks-during-seal-and-unseal-operations/52078