Check: SLES-12-030000
SLES 12 STIG:
SLES-12-030000
(in versions v2 r13 through v1 r1)
Title
The SUSE operating system must not have the telnet-server package installed. (Cat II impact)
Discussion
It is detrimental for SUSE operating systems 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. SUSE operating systems are 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. Satisfies: SRG-OS-000074-GPOS-00042, SRG-OS-000095-GPOS-00049
Check Content
Verify the telnet-server package is not installed on the SUSE operating system. Check that the telnet-server package is not installed on the SUSE operating system by running the following command: # zypper se telnet-server If the telnet-server package is installed, this is a finding.
Fix Text
Remove the telnet-server package from the SUSE operating system by running the following command: # sudo zypper remove telnet-server
Additional Identifiers
Rule ID: SV-217258r877396_rule
Vulnerability ID: V-217258
Group Title: SRG-OS-000074-GPOS-00042
Expert Comments
CCIs
| Number | Definition |
|---|---|
| CCI-000197 |
The information system, for password-based authentication, transmits only cryptographically-protected passwords. |
| CCI-000381 |
The organization configures the information system to provide only essential capabilities. |