github.com/khulnasoft-lab/defsec@v1.0.5-0.20230827010352-5e9f46893d95/rules/cloud/policies/aws/ec2/no_excessive_port_access.go (about)

     1  package ec2
     2  
     3  import (
     4  	"github.com/khulnasoft-lab/defsec/internal/rules"
     5  	"github.com/khulnasoft-lab/defsec/pkg/providers"
     6  	"github.com/khulnasoft-lab/defsec/pkg/scan"
     7  	"github.com/khulnasoft-lab/defsec/pkg/severity"
     8  	"github.com/khulnasoft-lab/defsec/pkg/state"
     9  )
    10  
    11  var CheckNoExcessivePortAccess = rules.Register(
    12  	scan.Rule{
    13  		AVDID:       "AVD-AWS-0102",
    14  		Aliases:     []string{"aws-vpc-no-excessive-port-access"},
    15  		Provider:    providers.AWSProvider,
    16  		Service:     "ec2",
    17  		ShortCode:   "no-excessive-port-access",
    18  		Summary:     "An Network ACL rule allows ALL ports.",
    19  		Impact:      "All ports exposed for ingressing/egressing data",
    20  		Resolution:  "Set specific allowed ports",
    21  		Explanation: `Ensure access to specific required ports is allowed, and nothing else.`,
    22  		Links: []string{
    23  			"https://docs.aws.amazon.com/vpc/latest/userguide/vpc-network-acls.html",
    24  		},
    25  		Terraform: &scan.EngineMetadata{
    26  			GoodExamples:        terraformNoExcessivePortAccessGoodExamples,
    27  			BadExamples:         terraformNoExcessivePortAccessBadExamples,
    28  			Links:               terraformNoExcessivePortAccessLinks,
    29  			RemediationMarkdown: terraformNoExcessivePortAccessRemediationMarkdown,
    30  		},
    31  		CloudFormation: &scan.EngineMetadata{
    32  			GoodExamples:        cloudFormationNoExcessivePortAccessGoodExamples,
    33  			BadExamples:         cloudFormationNoExcessivePortAccessBadExamples,
    34  			Links:               cloudFormationNoExcessivePortAccessLinks,
    35  			RemediationMarkdown: cloudFormationNoExcessivePortAccessRemediationMarkdown,
    36  		},
    37  		Severity: severity.Critical,
    38  	},
    39  	func(s *state.State) (results scan.Results) {
    40  		for _, acl := range s.AWS.EC2.NetworkACLs {
    41  			for _, rule := range acl.Rules {
    42  				if rule.Action.EqualTo("allow") && rule.Protocol.EqualTo("-1") || rule.Protocol.EqualTo("all") {
    43  					results.Add(
    44  						"Network ACL rule allows access using ALL ports.",
    45  						rule.Protocol,
    46  					)
    47  				} else {
    48  					results.AddPassed(&rule)
    49  				}
    50  			}
    51  		}
    52  		return
    53  	},
    54  )