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Merge pull request #12 from dxw/add-infrastructure-vpc-with-flow-logs
Add infrastructure VPC with flow logs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,13 @@ | ||
| { | ||
| "Version": "2012-10-17", | ||
| "Statement": [ | ||
| { | ||
| "Sid": "", | ||
| "Effect": "Allow", | ||
| "Principal": { | ||
| "Service": ${services} | ||
| }, | ||
| "Action": "sts:AssumeRole" | ||
| } | ||
| ] | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,16 @@ | ||
| { | ||
| "Version": "2012-10-17", | ||
| "Statement": [ | ||
| { | ||
| "Action": [ | ||
| "logs:CreateLogGroup", | ||
| "logs:CreateLogStream", | ||
| "logs:PutLogEvents", | ||
| "logs:DescribeLogGroups", | ||
| "logs:DescribeLogStreams" | ||
| ], | ||
| "Effect": "Allow", | ||
| "Resource": "*" | ||
| } | ||
| ] | ||
| } |
19 changes: 19 additions & 0 deletions
19
policies/kms-key-policy-statements/cloudwatch-logs-allow.json.tpl
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,19 @@ | ||
| %{if log_group_arn != ""}{ | ||
| "Effect": "Allow", | ||
| "Principal": { | ||
| "Service": "logs.amazonaws.com" | ||
| }, | ||
| "Action": [ | ||
| "kms:Encrypt*", | ||
| "kms:Decrypt*", | ||
| "kms:ReEncrypt*", | ||
| "kms:GenerateDataKey*", | ||
| "kms:Describe*" | ||
| ], | ||
| "Resource": "*", | ||
| "Condition": { | ||
| "ArnEquals": { | ||
| "kms:EncryptionContext:aws:logs:arn": "${log_group_arn}" | ||
| } | ||
| } | ||
| }%{endif} |
22 changes: 22 additions & 0 deletions
22
policies/kms-key-policy-statements/log-delivery-allow.json.tpl
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,22 @@ | ||
| %{if account_id != ""}{ | ||
| "Effect": "Allow", | ||
| "Principal": { | ||
| "Service": [ "delivery.logs.amazonaws.com" ] | ||
| }, | ||
| "Action": [ | ||
| "kms:Encrypt", | ||
| "kms:Decrypt", | ||
| "kms:ReEncrypt*", | ||
| "kms:GenerateDataKey*", | ||
| "kms:DescribeKey" | ||
| ], | ||
| "Resource": "*", | ||
| "Condition": { | ||
| "StringEquals": { | ||
| "aws:SourceAccount": ["${account_id}"] | ||
| }, | ||
| "ArnLike": { | ||
| "aws:SourceArn": ["arn:aws:logs:${region}:${account_id}:*"] | ||
| } | ||
| } | ||
| }%{endif} |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,17 @@ | ||
| { | ||
| "Principal": "*", | ||
| "Action": "s3:*", | ||
| "Effect": "Deny", | ||
| "Resource": [ | ||
| "${bucket_arn}", | ||
| "${bucket_arn}/*" | ||
| ], | ||
| "Condition": { | ||
| "Bool": { | ||
| "aws:SecureTransport": "false" | ||
| }, | ||
| "NumericLessThan": { | ||
| "s3:TlsVersion": "1.2" | ||
| } | ||
| } | ||
| } |
37 changes: 37 additions & 0 deletions
37
policies/s3-bucket-policy-statements/log-delivery-access.json.tpl
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,37 @@ | ||
| { | ||
| "Principal": { | ||
| "Service": "logging.s3.amazonaws.com" | ||
| }, | ||
| "Action": [ | ||
| "s3:PutObject" | ||
| ], | ||
| "Effect": "Allow", | ||
| "Resource": "${log_bucket_arn}/*", | ||
| "Condition": { | ||
| "ArnLike": { | ||
| "aws:SourceArn": ${source_arns} | ||
| }, | ||
| "StringEquals": { | ||
| "aws:SourceAccount": "${account_id}" | ||
| } | ||
| } | ||
| }, | ||
| { | ||
| "Effect": "Allow", | ||
| "Principal": { | ||
| "Service": "delivery.logs.amazonaws.com" | ||
| }, | ||
| "Action": [ | ||
| "s3:GetBucketAcl", | ||
| "s3:ListBucket" | ||
| ], | ||
| "Resource": "${log_bucket_arn}", | ||
| "Condition": { | ||
| "StringEquals": { | ||
| "aws:SourceAccount": "${account_id}" | ||
| }, | ||
| "ArnLike": { | ||
| "aws:SourceArn": ${source_arns} | ||
| } | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,4 @@ | ||
| { | ||
| "Version": "2012-10-17", | ||
| "Statement": ${statement} | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,97 @@ | ||
| # https://github.com/aquasecurity/tfsec/issues/2081 | ||
| # tfsec:ignore:aws-s3-enable-bucket-logging | ||
| resource "aws_s3_bucket" "infrastructure_logs" { | ||
| count = local.enable_infrastructure_logs_bucket ? 1 : 0 | ||
|
|
||
| bucket = "${local.resource_prefix_hash}-logs" | ||
| } | ||
|
|
||
| resource "aws_s3_bucket_policy" "infrastructure_logs" { | ||
| count = local.enable_infrastructure_logs_bucket ? 1 : 0 | ||
|
|
||
| bucket = aws_s3_bucket.infrastructure_logs[0].id | ||
| policy = templatefile( | ||
| "${path.module}/policies/s3-bucket-policy.json.tpl", | ||
| { | ||
| statement = <<EOT | ||
| [ | ||
| ${templatefile("${path.root}/policies/s3-bucket-policy-statements/enforce-tls.json.tpl", { bucket_arn = aws_s3_bucket.infrastructure_logs[0].arn })}, | ||
| ${templatefile("${path.root}/policies/s3-bucket-policy-statements/log-delivery-access.json.tpl", { | ||
| log_bucket_arn = aws_s3_bucket.infrastructure_logs[0].arn | ||
| source_arns = jsonencode(local.logs_bucket_source_arns) | ||
| account_id = local.aws_account_id | ||
| })} | ||
| ] | ||
| EOT | ||
| } | ||
| ) | ||
| } | ||
|
|
||
| resource "aws_s3_bucket_public_access_block" "infrastructure_logs" { | ||
| count = local.enable_infrastructure_logs_bucket ? 1 : 0 | ||
|
|
||
| bucket = aws_s3_bucket.infrastructure_logs[0].id | ||
| block_public_acls = true | ||
| block_public_policy = true | ||
| ignore_public_acls = true | ||
| restrict_public_buckets = true | ||
| } | ||
|
|
||
| resource "aws_s3_bucket_versioning" "infrastructure_logs" { | ||
| count = local.enable_infrastructure_logs_bucket ? 1 : 0 | ||
|
|
||
| bucket = aws_s3_bucket.infrastructure_logs[0].id | ||
|
|
||
| versioning_configuration { | ||
| status = "Enabled" | ||
| } | ||
| } | ||
|
|
||
| # because infrastructure_kms_encryption is only true when multiple other | ||
| # vars are true, tfsec can't figure out that this will actually have kms encryption when | ||
| # enabled | ||
| #tfsec:ignore:aws-s3-encryption-customer-key tfsec:ignore:aws-s3-enable-bucket-encryption | ||
| resource "aws_s3_bucket_server_side_encryption_configuration" "infrastructure_logs" { | ||
| count = local.enable_infrastructure_logs_bucket ? 1 : 0 | ||
|
|
||
| bucket = aws_s3_bucket.infrastructure_logs[0].id | ||
|
|
||
| dynamic "rule" { | ||
| for_each = local.infrastructure_kms_encryption ? [1] : [] | ||
| content { | ||
| apply_server_side_encryption_by_default { | ||
| kms_master_key_id = aws_kms_key.infrastructure[0].arn | ||
| sse_algorithm = "aws:kms" | ||
| } | ||
| } | ||
| } | ||
|
|
||
| dynamic "rule" { | ||
| for_each = local.infrastructure_kms_encryption ? [] : [1] | ||
| content { | ||
| apply_server_side_encryption_by_default { | ||
| sse_algorithm = "AES256" | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
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||
| resource "aws_s3_bucket_lifecycle_configuration" "logs" { | ||
| count = local.enable_infrastructure_logs_bucket && local.infrastructure_logging_bucket_retention != 0 ? 1 : 0 | ||
|
|
||
| bucket = aws_s3_bucket.infrastructure_logs[0].id | ||
|
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| rule { | ||
| id = "all_expire" | ||
|
|
||
| filter { | ||
| prefix = "" | ||
| } | ||
|
|
||
| expiration { | ||
| days = local.infrastructure_logging_bucket_retention | ||
| } | ||
|
|
||
| status = "Enabled" | ||
| } | ||
| } |
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