IQID:21926 HTTP Hashicorp Vault AWS IAM Integration Authentication Bypass (CVE-2020-16251) S

IQID: 21926 - October 2020

HashiCorp Vault's GCP authentication method can be bypassed on gce type roles that do not specify bound_service_accounts. Vault does not enforce that the compute_engine data in a signed JWT token has any relationship to the service account that created the token. This makes it possible to impersonate arbitrary GCE instances, by creating a JWT token with a faked compute_engine struct, using an arbitrary attacker controlled service account.

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