cyberstrikeus 2.1.17 Ensure NIS Server is not installed (Automated)
Description
The Network Information Service (NIS) (formally known as Yellow Pages) is a client-server directory service protocol for distributing system configuration files. The NIS server is a collection of programs that allow for the distribution of configuration files.
Rationale
The NIS service is inherently an insecure system that has been vulnerable to DOS attacks, buffer overflows and has poor authentication for querying NIS maps. NIS generally has been replaced by such protocols as Lightweight Directory Access Protocol (LDAP). It is recommended that the service be removed and other, more secure services be used.
Audit Procedure
Command Line
Run the following command to verify nis is not installed:
dpkg -s nis | grep -E '(Status:|not installed)'
Expected Result
dpkg-query: package 'nis' is not installed and no information is available
Remediation
Command Line
Run the following command to remove nis:
apt purge nis
Default Value
nis is not installed on minimal server installations.
References
- CIS Controls v7 - 9.2 Ensure Only Approved Ports, Protocols and Services Are Running
Profile
- Level 1 - Server
- Level 1 - Workstation