AWSLambda_ReadOnlyAccess

Last Modified

Mar 12, 2026

March 12, 2026 at 09:26 PM UTC

Version

Total Versions

Created

Feb 12, 2026

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Risk

Medium

The same capabilities in a scoped form, resource policy writes, reads across all data, or full access to a whole service. Read from this policy document alone: trust policies, boundaries and SCPs in your account still decide what actually succeeds. How this is assessed

Medium
Can read secrets
Reads Lambda environment variables, where credentials often live, on any resource with no condition.
lambda:GetFunctionConfiguration (via lambda:Get*)
Use with caution: Where the holder needs only some secrets, write your own policy scoped to their ARNs or tags, and limit decryption in the KMS key policies.

Policy Document

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59{
  "PolicyVersion": {
    "Document": {
      "Version": "2012-10-17",
      "Statement": [
        {
          "Effect": "Allow",
          "Action": [
            "cloudformation:DescribeStacks",
            "cloudformation:ListStacks",
            "cloudformation:ListStackResources",
            "cloudwatch:GetMetricData",
            "cloudwatch:ListMetrics",
            "ec2:DescribeSecurityGroups",
            "ec2:DescribeSubnets",
            "ec2:DescribeVpcs",
            "kms:ListAliases",
            "iam:GetPolicy",
            "iam:GetPolicyVersion",
            "iam:GetRole",
            "iam:GetRolePolicy",
            "iam:ListAttachedRolePolicies",
            "iam:ListRolePolicies",
            "iam:ListRoles",
            "logs:DescribeLogGroups",
            "lambda:Get*",
            "lambda:List*",
            "states:DescribeStateMachine",
            "states:ListStateMachines",
            "tag:GetResources",
            "xray:GetTraceSummaries",
            "xray:BatchGetTraces"
          ],
          "Resource": "*"
        },
        {
          "Effect": "Allow",
          "Action": [
            "logs:DescribeLogStreams",
            "logs:GetLogEvents",
            "logs:FilterLogEvents",
            "logs:StartQuery",
            "logs:StopQuery",
            "logs:DescribeQueries",
            "logs:GetLogGroupFields",
            "logs:GetLogRecord",
            "logs:GetQueryResults",
            "logs:StartLiveTail",
            "logs:StopLiveTail"
          ],
          "Resource": "arn:aws:logs:*:*:log-group:/aws/lambda/*"
        }
      ]
    },
    "VersionId": "v5",
    "IsDefaultVersion": true,
    "CreateDate": "2026-02-12T18:02:55+00:00"
  }
}