go-witness is Vulnerable to Improper Verification of AWS EC2 Identity Documents

Impact This vulnerability only affects users of the AWS attestor. Users of the AWS attestor could have unknowingly received a forged identity document. While this may seem unlikely, AWS recently issued a security bulletin about IMDS Instance Metadata Service impersonation.^1 There are multiple...

CVE-2025-62375 go-witness Improper Verification of AWS EC2 Identity Documents

go-witness and witness are Go modules for generating attestations. In go-witness versions 0.8.6 and earlier and witness versions 0.9.2 and earlier the AWS attestor improperly verifies AWS EC2 instance identity documents. Verification can incorrectly succeed when a signature is not present or is...

CVE-2025-62375

The CVE describes an improper verification in the AWS attestor used by go-witness and witness. In affected versions, the attestor can accept forged AWS EC2 instance identity documents when a signature is absent/empty or RSA verification fails, and it relies on a legacy global AWS certificate inst...

CVE-2025-62375 go-witness Improper Verification of AWS EC2 Identity Documents

go-witness and witness are Go modules for generating attestations. In go-witness versions 0.8.6 and earlier and witness versions 0.9.2 and earlier the AWS attestor improperly verifies AWS EC2 instance identity documents. Verification can incorrectly succeed when a signature is not present or is...