AWS Security ChangesHomeSearch

AWS cli documentation change

Service: cli · 2025-06-28 · Documentation low

File: cli/latest/reference/kms/verify.md

Summary

Clarified message encoding requirements for AWS CLI v2 in verify command documentation

Security assessment

The change adds explicit guidance about Base64-encoding requirements and file handling for message verification. While this improves security documentation by clarifying proper usage, there's no evidence of addressing a specific vulnerability.

Diff

diff --git a/cli/latest/reference/kms/verify.md b/cli/latest/reference/kms/verify.md
index 389a99e03..39822d2b3 100644
--- a//cli/latest/reference/kms/verify.md
+++ b//cli/latest/reference/kms/verify.md
@@ -15 +15 @@
-  * [AWS CLI 2.27.42 Command Reference](../../index.html) »
+  * [AWS CLI 2.27.45 Command Reference](../../index.html) »
@@ -327 +327,5 @@ Unless otherwise stated, all examples have unix-like quotation rules. These exam
-The following `verify` example verifies a cryptographic signature for a short, Base64-encoded message. The key ID, message, message type, and signing algorithm must be same ones that were used to sign the message. The signature that you specify cannot be base64-encoded. For help decoding the signature that the `sign` command returns, see the `sign` command examples.
+The following `verify` command verifies a cryptographic signature for a short, Base64-encoded message. The key ID, message, message type, and signing algorithm must be same ones that were used to sign the message.
+
+In AWS CLI v2, the value of the `message` parameter must be Base64-encoded. Or, you can save the message in a file and use the `fileb://` prefix, which tells the AWS CLI to read binary data from the file.
+
+The signature that you specify cannot be base64-encoded. For help decoding the signature that the `sign` command returns, see the `sign` command examples.
@@ -378 +382 @@ SigningAlgorithm -> (string)
-  * [AWS CLI 2.27.42 Command Reference](../../index.html) »
+  * [AWS CLI 2.27.45 Command Reference](../../index.html) »