Skip to content

"SignatureDoesNotMatch" error with PresignGetObject #2531

Closed
@dchoma-sy

Description

Describe the bug

After upgrading aws-sdk-go-v2 beyond v1.24.0, the PresignGetObject op adds to X-Amz-SignedHeaders which seems to always produce "SignatureDoesNotMatch" errors.

Expected Behavior

https://s3.us-east-2.amazonaws.com/
some_bucket/some_file.png
?X-Amz-Algorithm=AWS4-HMAC-SHA256&
X-Amz-Credential=REDACTED%2Fus-east-2%2Fs3%2Faws4_request&
X-Amz-Date=20240305T040452Z&
X-Amz-Expires=900&
X-Amz-Security-Token=REDACTED&
X-Amz-SignedHeaders=host&
x-id=GetObject&
X-Amz-Signature=REDACTED

URL retrieves object.

Current Behavior

https://s3.us-east-2.amazonaws.com/
some_bucket/some_file.png
?X-Amz-Algorithm=AWS4-HMAC-SHA256&
X-Amz-Credential=REDACTED%2Fus-east-2%2Fs3%2Faws4_request&
X-Amz-Date=20240305T040232Z&
X-Amz-Expires=900&
X-Amz-Security-Token=REDACTED&
X-Amz-SignedHeaders=amz-sdk-request%3Bhost&
x-id=GetObject&
X-Amz-Signature=REDACTED

SignatureDoesNotMatch
The request signature we calculated does not match the signature you provided. Check your key and signing method.

Reproduction Steps

go get github.com/aws/[email protected]

Any version between v1.24.1 -> v1.25.2 exhibits the new behavior.

Possible Solution

Seems like it's introduced here...

diff --git a/aws/retry/middleware.go b/aws/retry/middleware.go
index 722ca34c6a..dc703d482d 100644
--- a/aws/retry/middleware.go
+++ b/aws/retry/middleware.go
@@ -328,10 +328,12 @@ func AddRetryMiddlewares(stack *smithymiddle.Stack, options AddRetryMiddlewaresO
                middleware.LogAttempts = options.LogRetryAttempts
        })

-       if err := stack.Finalize.Add(attempt, smithymiddle.After); err != nil {
+       // index retry to before signing, if signing exists
+       if err := stack.Finalize.Insert(attempt, "Signing", smithymiddle.Before); err != nil {
                return err
        }
-       if err := stack.Finalize.Add(&MetricsHeader{}, smithymiddle.After); err != nil {
+
+       if err := stack.Finalize.Insert(&MetricsHeader{}, attempt.ID(), smithymiddle.After); err != nil {
                return err
        }
        return nil

Reverting if err := stack.Finalize.Add(&MetricsHeader{}, smithymiddle.After); err != nil { fixes the issue for me.

Additional Information/Context

No response

AWS Go SDK V2 Module Versions Used

github.com/aws/aws-sdk-go-v2 v1.24.1
github.com/aws/aws-sdk-go-v2/config v1.25.8
github.com/aws/aws-sdk-go-v2/credentials v1.16.6
github.com/aws/aws-sdk-go-v2/service/s3 v1.46.0

Compiler and Version used

go version go1.21.3 darwin/arm64

Operating System and version

MacOS 13.6.3 (22G436)

Activity

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

Metadata

Assignees

No one assigned

    Labels

    No labels
    No labels

    Type

    No type

    Projects

    No projects

    Milestone

    No milestone

    Relationships

    None yet

    Development

    No branches or pull requests

    Issue actions