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feat(misconf): Adds CloudFront standard logging v2 support to AVD-AWS-0010 #10848

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Merged
nikpivkin merged 14 commits into from
Jun 18, 2026
Merged

feat(misconf): Adds CloudFront standard logging v2 support to AVD-AWS-0010 #10848

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4431e31
feat(cloudfront): add v2 logging struct to data model
Aakarsh133 Jun 11, 2026
5469868
chore(schema): regenerate cloud schema for cloudfront v2 logging
Aakarsh133 Jun 11, 2026
501e63c
fix(terraform): detect cloudfront v2 log delivery chains
Aakarsh133 Jun 11, 2026
ddf6ca5
fix(cloudformation): detect cloudfront v2 log delivery chains
Aakarsh133 Jun 12, 2026
2b97e16
test(terraform): add unit tests for v2 logging detection
Aakarsh133 Jun 12, 2026
6a4b3d5
test(cloudfront): add unit tests for v2 logging detection
Aakarsh133 Jun 13, 2026
fd3aa58
fix(cloudformation) : Fixed lint issues.
Aakarsh133 Jun 14, 2026
c64562c
Update pkg/iac/adapters/cloudformation/aws/cloudfront/distribution.go
Aakarsh133 Jun 16, 2026
f3cba5a
fix(lint) Reverted lint changes
Aakarsh133 Jun 16, 2026
3b2afa1
fix(terraform) Optimized log_type check
Aakarsh133 Jun 16, 2026
2e07db1
test(terraform) Added test case for non access log_type
Aakarsh133 Jun 16, 2026
f960b34
test(cloudformation) Added additional tests
Aakarsh133 Jun 16, 2026
b3982d5
fix(cloudformation) Updated metadata entry at hasV2Logging in true case
Aakarsh133 Jun 16, 2026
2946f5b
fix(terraform) Updated metadata entry to delivery when hasV2Logging r…
Aakarsh133 Jun 17, 2026
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157 changes: 157 additions & 0 deletions pkg/iac/adapters/cloudformation/aws/cloudfront/cloudfront_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -58,6 +58,163 @@ Resources:
Distributions: []cloudfront.Distribution{{}},
},
},

{
name: "v2 logging configured",
source: `AWSTemplateFormatVersion: 2010-09-09
Resources:
CloudFrontDistribution:
Type: AWS::CloudFront::Distribution
Properties:
DistributionConfig:
DefaultCacheBehavior:
ViewerProtocolPolicy: "redirect-to-https"

CloudFrontAccessLogsDeliverySource:
Type: AWS::Logs::DeliverySource
Properties:
LogType: ACCESS_LOGS
Name: cloudfront-log-delivery-source
ResourceArn: !Sub
- arn:aws:cloudfront::${AWS::AccountId}:distribution/${D}
- D: !GetAtt CloudFrontDistribution.Id

CloudFrontAccessLogsDelivery:
Type: AWS::Logs::Delivery
Properties:
DeliverySourceName: cloudfront-log-delivery-source
`,
expected: cloudfront.Cloudfront{
Distributions: []cloudfront.Distribution{
{
Logging: cloudfront.Logging{
V2: cloudfront.LoggingV2{
Enabled: types.BoolTest(true),
},
},
DefaultCacheBehaviour: cloudfront.CacheBehaviour{
ViewerProtocolPolicy: types.StringTest("redirect-to-https"),
},
},
},
},
},
{
name: "v2 logging source exists but no delivery",
source: `AWSTemplateFormatVersion: 2010-09-09
Resources:
CloudFrontDistribution:
Type: AWS::CloudFront::Distribution
Properties:
DistributionConfig:
DefaultCacheBehavior:
ViewerProtocolPolicy: "redirect-to-https"

CloudFrontAccessLogsDeliverySource:
Type: AWS::Logs::DeliverySource
Properties:
LogType: ACCESS_LOGS
Name: cloudfront-log-delivery-source
ResourceArn: !Sub
- arn:aws:cloudfront::${AWS::AccountId}:distribution/${D}
- D: !GetAtt CloudFrontDistribution.Id
`,
expected: cloudfront.Cloudfront{
Distributions: []cloudfront.Distribution{
{
Logging: cloudfront.Logging{
V2: cloudfront.LoggingV2{
Enabled: types.BoolTest(false),
},
},
DefaultCacheBehaviour: cloudfront.CacheBehaviour{
ViewerProtocolPolicy: types.StringTest("redirect-to-https"),
},
},
},
},
},

@nikpivkin nikpivkin Jun 16, 2026

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Two cases missing here:

  1. LogType other than ACCESS_LOGS → expect false (covers the LogType filter).
  2. DeliverySourceName given as !Ref CloudFrontAccessLogsDeliverySource (logical ID) instead of the literal name → expect true.


{
name: "v2 logging with non-access log_type yields false",
source: `AWSTemplateFormatVersion: 2010-09-09
Resources:
CloudFrontDistribution:
Type: AWS::CloudFront::Distribution
Properties:
DistributionConfig:
DefaultCacheBehavior:
ViewerProtocolPolicy: "redirect-to-https"

CloudFrontAccessLogsDeliverySource:
Type: AWS::Logs::DeliverySource
Properties:
LogType: ERROR_LOGS
Name: cloudfront-log-delivery-source
ResourceArn: !Sub
- arn:aws:cloudfront::${AWS::AccountId}:distribution/${D}
- D: !GetAtt CloudFrontDistribution.Id

CloudFrontAccessLogsDelivery:
Type: AWS::Logs::Delivery
Properties:
DeliverySourceName: cloudfront-log-delivery-source
`,
expected: cloudfront.Cloudfront{
Distributions: []cloudfront.Distribution{
{
Logging: cloudfront.Logging{
V2: cloudfront.LoggingV2{
Enabled: types.BoolTest(false),
},
},
DefaultCacheBehaviour: cloudfront.CacheBehaviour{
ViewerProtocolPolicy: types.StringTest("redirect-to-https"),
},
},
},
},
},
{
name: "v2 logging delivery source ref via logical ID yields true",
source: `AWSTemplateFormatVersion: 2010-09-09
Resources:
CloudFrontDistribution:
Type: AWS::CloudFront::Distribution
Properties:
DistributionConfig:
DefaultCacheBehavior:
ViewerProtocolPolicy: "redirect-to-https"

CloudFrontAccessLogsDeliverySource:
Type: AWS::Logs::DeliverySource
Properties:
LogType: ACCESS_LOGS
Name: cloudfront-log-delivery-source
ResourceArn: !Sub
- arn:aws:cloudfront::${AWS::AccountId}:distribution/${D}
- D: !GetAtt CloudFrontDistribution.Id

CloudFrontAccessLogsDelivery:
Type: AWS::Logs::Delivery
Properties:
DeliverySourceName: !Ref CloudFrontAccessLogsDeliverySource
`,
expected: cloudfront.Cloudfront{
Distributions: []cloudfront.Distribution{
{
Logging: cloudfront.Logging{
V2: cloudfront.LoggingV2{
Enabled: types.BoolTest(true),
},
},
DefaultCacheBehaviour: cloudfront.CacheBehaviour{
ViewerProtocolPolicy: types.StringTest("redirect-to-https"),
},
},
},
},
},
}

for _, tt := range tests {
Expand Down
32 changes: 32 additions & 0 deletions pkg/iac/adapters/cloudformation/aws/cloudfront/distribution.go
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Original file line number Diff line number Diff line change
@@ -1,13 +1,18 @@
package cloudfront

import (
"strings"

"github.com/aquasecurity/trivy/pkg/iac/providers/aws/cloudfront"
"github.com/aquasecurity/trivy/pkg/iac/scanners/cloudformation/parser"
iacTypes "github.com/aquasecurity/trivy/pkg/iac/types"
)

func getDistributions(ctx parser.FileContext) (distributions []cloudfront.Distribution) {

distributionResources := ctx.GetResourcesByType("AWS::CloudFront::Distribution")
deliverySources := ctx.GetResourcesByType("AWS::Logs::DeliverySource")
deliveries := ctx.GetResourcesByType("AWS::Logs::Delivery")

for _, r := range distributionResources {
distribution := cloudfront.Distribution{
Expand All @@ -16,6 +21,10 @@ func getDistributions(ctx parser.FileContext) (distributions []cloudfront.Distri
Logging: cloudfront.Logging{
Metadata: r.Metadata(),
Bucket: r.GetStringProperty("DistributionConfig.Logging.Bucket"),
V2: cloudfront.LoggingV2{
Metadata: r.Metadata(),
Enabled: hasV2Logging(r, deliverySources, deliveries),
},
},
DefaultCacheBehaviour: getDefaultCacheBehaviour(r),
OrdererCacheBehaviours: nil,
Expand Down Expand Up @@ -43,3 +52,26 @@ func getDefaultCacheBehaviour(r *parser.Resource) cloudfront.CacheBehaviour {
ViewerProtocolPolicy: defaultCache.GetStringProperty("ViewerProtocolPolicy"),
}
}

func hasV2Logging(distribution *parser.Resource, deliverySources, deliveries []*parser.Resource) iacTypes.BoolValue {

for _, source := range deliverySources {
if !source.GetStringProperty("LogType").EqualTo("ACCESS_LOGS") {
continue
}
resourceArn := source.GetStringProperty("ResourceArn")
if !strings.Contains(resourceArn.Value(), distribution.ID()) {
continue
}
sourceName := source.GetStringProperty("Name")

for _, delivery := range deliveries {
deliverySourceName := delivery.GetStringProperty("DeliverySourceName")
if deliverySourceName.Value() == sourceName.Value() || deliverySourceName.Value() == source.ID() {
return iacTypes.Bool(true, delivery.Metadata())
}
}

}
return iacTypes.Bool(false, distribution.Metadata())
}
28 changes: 27 additions & 1 deletion pkg/iac/adapters/terraform/aws/cloudfront/adapt.go
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Original file line number Diff line number Diff line change
Expand Up @@ -16,7 +16,14 @@ func adaptDistributions(modules terraform.Modules) []cloudfront.Distribution {
var distributions []cloudfront.Distribution
for _, module := range modules {
for _, resource := range module.GetResourcesByType("aws_cloudfront_distribution") {
distributions = append(distributions, adaptDistribution(resource))
distribution := adaptDistribution(resource)

distribution.Logging.V2 = cloudfront.LoggingV2{
Metadata: resource.GetMetadata(),
Enabled: hasV2Logging(modules, resource),
}

distributions = append(distributions, distribution)
}
}
return distributions
Expand Down Expand Up @@ -77,3 +84,22 @@ func adaptDistribution(resource *terraform.Block) cloudfront.Distribution {

return distribution
}

func hasV2Logging(modules terraform.Modules, distributionBlock *terraform.Block) types.BoolValue {
metadata := distributionBlock.GetMetadata()

sources := modules.GetReferencingResources(distributionBlock, "aws_cloudwatch_log_delivery_source", "resource_arn")
for _, source := range sources {
if !source.GetAttribute("log_type").Equals("ACCESS_LOGS") {
continue
}

deliveries := modules.GetReferencingResources(source, "aws_cloudwatch_log_delivery", "delivery_source_name")
if len(deliveries) > 0 {
return types.Bool(true, metadata)

@nikpivkin nikpivkin Jun 17, 2026

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Just as in CF, it's best to return the aws_cloudwatch_log_delivery metadata.

@Aakarsh133 Aakarsh133 Jun 17, 2026

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Until now it was under assumption that merely an existence of a aws_cloudwatch_log_delivery would confirm the V2 to be true, here it didn't reference the specific resource explicitly, so in case at least one resource exists(usual case) should i do return types.Bool(true, deliveries[0].GetMetadata()). Is this the correct approach?

@nikpivkin nikpivkin Jun 17, 2026

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Yes, that's fine, since there's supposed to be at least one delivery resource here.

@Aakarsh133 Aakarsh133 Jun 17, 2026

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also just a note for both CF and Terraform in case of false, distribution metadata is returned

}
}

return types.Bool(false, metadata)

}
93 changes: 93 additions & 0 deletions pkg/iac/adapters/terraform/aws/cloudfront/adapt_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -89,6 +89,99 @@ func Test_adaptDistribution(t *testing.T) {
}
}

func Test_adaptDistributionV2(t *testing.T) {

@nikpivkin nikpivkin Jun 16, 2026 •
edited
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Could you add a negative case where the delivery source references the distribution and a delivery exists, but log_type is not ACCESS_LOGS (e.g. ERROR_LOGS) → expect false? Right now the log_type filter branch isn't covered, so a regression there would go unnoticed.

tests := []struct {
name string
terraform string
expected cloudfront.Distribution
}{
{
name: "v2 logging configured",
terraform: `
resource "aws_cloudfront_distribution" "example" {}

resource "aws_cloudwatch_log_delivery_source" "example" {
log_type = "ACCESS_LOGS"
resource_arn = aws_cloudfront_distribution.example.arn
}

resource "aws_cloudwatch_log_delivery" "example" {
delivery_source_name = aws_cloudwatch_log_delivery_source.example.name
}
`,
expected: cloudfront.Distribution{
Logging: cloudfront.Logging{
V2: cloudfront.LoggingV2{
Enabled: iacTypes.BoolTest(true),
},
},
DefaultCacheBehaviour: cloudfront.CacheBehaviour{},
ViewerCertificate: cloudfront.ViewerCertificate{
MinimumProtocolVersion: iacTypes.StringTest("TLSv1"),
},
},
},
{
name: "v2 logging source exists but no delivery",
terraform: `
resource "aws_cloudfront_distribution" "example" {}

resource "aws_cloudwatch_log_delivery_source" "example" {
log_type = "ACCESS_LOGS"
resource_arn = aws_cloudfront_distribution.example.arn
}
`,
expected: cloudfront.Distribution{
Logging: cloudfront.Logging{
V2: cloudfront.LoggingV2{
Enabled: iacTypes.BoolTest(false),
},
},
DefaultCacheBehaviour: cloudfront.CacheBehaviour{},
ViewerCertificate: cloudfront.ViewerCertificate{
MinimumProtocolVersion: iacTypes.StringTest("TLSv1"),
},
},
},

{
name: "v2 logging with non-access log_type",
terraform: `
resource "aws_cloudfront_distribution" "example" {}

resource "aws_cloudwatch_log_delivery_source" "example" {
log_type = "ERROR_LOGS"
resource_arn = aws_cloudfront_distribution.example.arn
}

resource "aws_cloudwatch_log_delivery" "example" {
delivery_source_name = aws_cloudwatch_log_delivery_source.example.name
}
`,
expected: cloudfront.Distribution{
Logging: cloudfront.Logging{
V2: cloudfront.LoggingV2{
Enabled: iacTypes.BoolTest(false),
},
},
DefaultCacheBehaviour: cloudfront.CacheBehaviour{},
ViewerCertificate: cloudfront.ViewerCertificate{
MinimumProtocolVersion: iacTypes.StringTest("TLSv1"),
},
},
},
}

for _, test := range tests {
t.Run(test.name, func(t *testing.T) {
modules := tftestutil.CreateModulesFromSource(t, test.terraform, ".tf")
adapted := Adapt(modules)
require.Len(t, adapted.Distributions, 1)
testutil.AssertDefsecEqual(t, test.expected, adapted.Distributions[0])
})
}
}

func TestLines(t *testing.T) {
src := `
resource "aws_cloudfront_distribution" "example" {
Expand Down
6 changes: 6 additions & 0 deletions pkg/iac/providers/aws/cloudfront/cloudfront.go
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Original file line number Diff line number Diff line change
Expand Up @@ -17,9 +17,15 @@ type Distribution struct {
ViewerCertificate ViewerCertificate
}

type LoggingV2 struct {
Metadata iacTypes.Metadata
Enabled iacTypes.BoolValue
}

type Logging struct {
Metadata iacTypes.Metadata
Bucket iacTypes.StringValue
V2 LoggingV2
}

type CacheBehaviour struct {
Expand Down
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