CVE-2023-25000

HashiCorp Vaults implementation of Shamirs 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.

Weakness

Two separate operations in a product require different amounts of time to complete, in a way that is observable to an actor and reveals security-relevant information about the state of the product, such as whether a particular operation was successful or not.

Affected Software

Related Attack Patterns

• https://cwe.mitre.org/data/definitions/462.html
• https://cwe.mitre.org/data/definitions/541.html
• https://cwe.mitre.org/data/definitions/580.html

References

• https://discuss.hashicorp.com/t/hcsec-2023-10-vault-vulnerable-to-cache-timing-attacks-during-seal-and-unseal-operations/52078
• https://security.netapp.com/advisory/ntap-20230526-0008/
• https://discuss.hashicorp.com/t/hcsec-2023-10-vault-vulnerable-to-cache-timing-attacks-during-seal-and-unseal-operations/52078
• https://security.netapp.com/advisory/ntap-20230526-0008/