37 lines
1.6 KiB
YAML
37 lines
1.6 KiB
YAML
id: ec2-unrestricted-cifs
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info:
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name: EC2 Unrestricted CIFS Access
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author: princechaddha
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severity: critical
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description: |
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Checks for inbound rules in Amazon EC2 security groups allowing unrestricted access (0.0.0.0/0 or ::/0) on TCP port 445, used for CIFS/SMB file sharing, posing a high security risk.
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impact: |
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Unrestricted CIFS access can expose EC2 instances to unwanted external access, increasing the risk of data breaches and unauthorized control over resources.
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remediation: |
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Restrict inbound access on TCP port 445 to known IPs or ranges. Regularly review security group configurations to ensure compliance with security policies.
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reference:
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- https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/using-network-security.html
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tags: cloud,devops,aws,amazon,ec2,aws-cloud-config
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variables:
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region: "us-east-1"
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self-contained: true
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code:
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- engine:
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- sh
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- bash
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source: |
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aws ec2 describe-security-groups --region $region --filters Name=ip-permission.from-port,Values=445 Name=ip-permission.to-port,Values=445 Name=ip-permission.cidr,Values='0.0.0.0/0' Name=ip-permission.ipv6-cidr,Values='::/0' --output json --query 'SecurityGroups[*].GroupId'
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extractors:
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- type: json
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name: securitygroup
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internal: true
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json:
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- '.[]'
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- type: dsl
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dsl:
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- 'securitygroup + " security group(s) alows unrestricted access (0.0.0.0/0 or ::/0) on TCP port 445"'
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# digest: 4a0a00473045022100d07b38ee532d1cb1f6cca8d1384049e416bf72bae10727fe3f0fdd70bddf65730220384a7997d216466edabd10fe2f011460f0ade329929e41bf322977aac2d21a43:922c64590222798bb761d5b6d8e72950 |