CVE-2023-6337: Allocation of Resources Without Limits or Throttling

December 9, 2023 (updated December 12, 2023)

HashiCorp Vault and Vault Enterprise 1.12.0 and newer is vulnerable to a denial of service through memory exhaustion of the host when handling large unauthenticated and authenticated HTTP requests from a client. Vault will attempt to map the request to memory, resulting in the exhaustion of available memory on the host, which may cause Vault to crash.

Fixed in Vault 1.15.4, 1.14.8, 1.13.12.

References

discuss.hashicorp.com/t/hcsec-2023-34-vault-vulnerable-to-denial-of-service-through-memory-exhaustion-when-handling-large-http-requests/60741
github.com/advisories/GHSA-6p62-6cg9-f5f5
nvd.nist.gov/vuln/detail/CVE-2023-6337

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