IAM user configuration to grant access to a specific bucket at Amazon S3

s3-access-policy.json

{
    "Statement": [
        {
            "Effect": "Allow",
            "Action": "s3:ListAllMyBuckets",
            "Resource": "arn:aws:s3:::*"
        },
        {
            "Effect": "Allow",
            "Action": "s3:*",
            "Resource": [
                "arn:aws:s3:::PUT_BUCKET_NAME_HERE",
                "arn:aws:s3:::PUT_BUCKET_NAME_HERE/*"
            ]
        }
    ]
}