class SecurityGroupEgressOpenToWorldRule

Public Instance Methods

audit_impl(cfn_model) click to toggle source

This will behave slightly different than the legacy jq based rule which was targeted against inline ingress only

# File lib/cfn-nag/custom_rules/SecurityGroupEgressOpenToWorldRule.rb, line 25
def audit_impl(cfn_model)
  violating_security_groups = cfn_model.security_groups.select do |security_group|
    violating_egresses = security_group.egresses.select do |egress|
      violating_egress(egress)
    end

    !violating_egresses.empty?
  end

  violating_egresses = cfn_model.standalone_egress.select do |standalone_egress|
    violating_egress(standalone_egress)
  end

  violating_security_groups.map(&:logical_resource_id) + violating_egresses.map(&:logical_resource_id)
end
rule_id() click to toggle source
# File lib/cfn-nag/custom_rules/SecurityGroupEgressOpenToWorldRule.rb, line 18
def rule_id
  'W5'
end
rule_text() click to toggle source
# File lib/cfn-nag/custom_rules/SecurityGroupEgressOpenToWorldRule.rb, line 10
def rule_text
  'Security Groups found with cidr open to world on egress'
end
rule_type() click to toggle source
# File lib/cfn-nag/custom_rules/SecurityGroupEgressOpenToWorldRule.rb, line 14
def rule_type
  Violation::WARNING
end

Private Instance Methods

violating_egress(egress) click to toggle source
# File lib/cfn-nag/custom_rules/SecurityGroupEgressOpenToWorldRule.rb, line 43
def violating_egress(egress)
  ip4_open?(egress) || ip6_open?(egress)
end