2024-04-11 14:23:07 +00:00
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id: ec2-unrestricted-telnet
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info:
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name: Restrict EC2 Telnet Access
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author: princechaddha
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severity: critical
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description: |
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Checks for unrestricted inbound Telnet access (TCP port 23) in Amazon EC2 security groups, highlighting potential security risks.
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impact: |
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Unrestricted Telnet access can expose EC2 instances to unauthorized access and potential security breaches.
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remediation: |
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Restrict inbound Telnet access by updating EC2 security group rules to allow only trusted IP ranges or disabling Telnet if not required.
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reference:
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- https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/authorizing-access-to-an-instance.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=23 Name=ip-permission.to-port,Values=23 Name=ip-permission.cidr,Values='0.0.0.0/0' --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 23"'
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2024-04-11 14:25:25 +00:00
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# digest: 4a0a004730450221009249024faa045e4c4a777389a760b53b294ea9285a93048a108e694ffdb7401302201be48e1ed82fb8dc69023ae0a15c891a5592f4c00d1c979e07e084456aed7bc6:922c64590222798bb761d5b6d8e72950
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