Title

SLEM 5 must not have the telnet-server package installed. (Cat I impact)

Discussion

It is detrimental for SLEM 5 to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked, and therefore may remain unsecured. They increase the risk to the platform by providing additional attack vectors. SLEM 5 is capable of providing a wide variety of functions and services. Some of the functions and services, provided by default, may not be necessary to support essential organizational operations (e.g., key missions and functions). Examples of nonessential capabilities include but are not limited to games, software packages, tools, and demonstration software not related to requirements or providing a wide array of functionality not required for every mission but which cannot be disabled.

Check Content

Verify the telnet-server package is not installed on SLEM 5. Check that the telnet-server package is not installed on SLEM 5 by running the following command: > sudo zypper se telnet-server | grep Installed If the telnet-server package is installed, this is a finding.

Fix Text

Remove the telnet-server package from SLEM 5 by running the following command: > sudo transactional-update pkg remove telnet-server > sudo reboot

Additional Identifiers

Rule ID: SV-261277r996318_rule

Vulnerability ID: V-261277

Group Title: SRG-OS-000074-GPOS-00042

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.