This should show that the Telnet access has been removed from the identified security group.By following these steps, you have successfully remediated the unrestricted Telnet access in AWS using AWS CLI.
Using Python
To remediate the unrestricted Telnet access misconfiguration in AWS using Python, you can follow the below steps:
First, you need to identify the security group(s) that have unrestricted Telnet access. You can use the following Python code to retrieve the security groups:
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import boto3ec2 = boto3.resource('ec2')# Get all security groupssecurity_groups = list(ec2.security_groups.all())# Loop through each security groupfor sg in security_groups: # Check if Telnet access is allowed for rule in sg.ip_permissions: if rule['IpProtocol'] == 'tcp' and rule['FromPort'] == 23 and rule['ToPort'] == 23: print(f"Security Group {sg.group_id} allows unrestricted Telnet access")
Once you have identified the security group(s) that have unrestricted Telnet access, you can remove the Telnet rule(s) from the security group(s). You can use the following Python code to remove the Telnet rule(s):
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import boto3ec2 = boto3.resource('ec2')# Get the security group by IDsg = ec2.SecurityGroup('sg-0123456789abcdef')# Revoke the Telnet access rule(s)sg.revoke_ingress(IpProtocol='tcp', FromPort=23, ToPort=23, CidrIp='0.0.0.0/0')
In the above code, replace ‘sg-0123456789abcdef’ with the ID of the security group that you want to remediate.By following the above steps, you can remediate the unrestricted Telnet access misconfiguration in AWS using Python.