AWSSecurityTokenServiceException：访问被拒绝。用户无权执行 sts:AssumeRole

Question

我是 AWS 新手。我想为 aws 调用生成临时凭证。为此，我使用使用 IAM 用户临时凭证发出请求 - 适用于 Java 的 AWS 开发工具包

中的示例

我经过的地方

String clientRegion = "<specific region>";
String roleARN = "<ARN from role>";
String roleSessionName = "Just random string"; //<-- maybe I should pass specific SessionName?
String bucketName = "<specific bucket name>";

当尝试扮演角色时

stsClient.assumeRole(roleRequest);

出现错误

com.amazonaws.services.securitytoken.model.AWSSecurityTokenServiceException： 用户：arn:aws:iam:::user/ 无权执行：

sts:AssumeRole on resource: arn:aws:iam::<ID>:role/<ROLE_NAME> (Service: AWSSecurityTokenService; Status Code: 403; Error Code:

访问被拒绝；请求ID:)

我有一个“认知”角色。 我认为问题出在角色信任关系设置上。 看起来像这样：

    {
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Principal": {
        "AWS": "arn:aws:iam::<iam user ID>:user/<USER_NAME>",
        "Federated": "cognito-identity.amazonaws.com"
      },
      "Action": "sts:AssumeRoleWithWebIdentity",
      "Condition": {
        "StringEquals": {
          "cognito-identity.amazonaws.com:aud": "<user pool ID>"
        },
        "ForAnyValue:StringLike": {
          "cognito-identity.amazonaws.com:amr": "authenticated"
        }
      }
    }
  ]
}

和

用户策略

（此用户策略也附加到此角色）：

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Sid": "<sidId1>",
            "Effect": "Allow",
            "Action": [
                "s3:PutObject",
                "s3:PutObjectAcl"
            ],
            "Resource": [
                "arn:aws:s3:::<path>*"
            ]
        },
        {
            "Sid": "sidId2",
            "Effect": "Allow",
            "Action": [
                "sts:AssumeRole",
                "sts:AssumeRoleWithWebIdentity"
            ],
            "Resource": [
                "arn:aws:iam::<ID>:role/<ROLE_NAME>"
            ]
        }
    ]
}

用户政策有两个警告：

我做错了什么？

UPD

我改变了角色信任关系，只需删除条件：

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Principal": {
        "Federated": "cognito-identity.amazonaws.com",
        "AWS": "arn:aws:iam::<ID>:user/<USER>"
      },
      "Action": [
        "sts:AssumeRole",
        "sts:AssumeRoleWithWebIdentity"
      ]
    }
  ]
}

现在

访问被拒绝

另一行代码发生错误：

  // Verify that assuming the role worked and the permissions are set correctly
  // by getting a set of object keys from the bucket.
  ObjectListing objects = s3Client.listObjects(bucketName);

收到错误响应：com.amazonaws.services.s3.model.AmazonS3Exception：访问被拒绝（服务：Amazon S3；状态代码：403；错误代码：AccessDenied；请求 ID：），S3 扩展请求 ID：

Answer 1

关于另一个错误，正如 @user818510 所提到的，您的角色没有 s3:ListBucket 操作的权限。