CIS: SuSE Linux Enterprise Server 15

This topic provides information about the Center for Internet Security (CIS) template for SuSE Linux Enterprise Server 15, Version 1.1.1 published on January 24, 2022. This template contains implementation for 280 rules that can be installed on TrueSight Server Automation 20.x or later.

  • The existing customized template is renamed before you import the new one (by performing the steps given below).

Determine whether you need to install the template

If you are installing TrueSight Server Automation version 23.4 for the first time (fresh installation), no action is required because this template is installed as a part of the 23.4 installation process.

If you have upgraded to 23.4 or later, this template is not installed automatically. To install this template, do one of the following actions:

  • Perform the steps mentioned in this topic.
    Through this method, the CIS template for SuSE Linux Enterprise Server 15 is installed.

  • Upgrade the compliance content by using one of the following methods:

    Important

    Rename any existing customized template before you run the Auto Content Import Job or install the template manually. 

    • Through the Auto Content Import Job after the upgrade. During the Application Server upgrade, the Network Shell script of this job is updated. After you upgrade TrueSight Server Automation , execute this job to obtain the latest compliance content.
      Through this method, the latest version of all the templates that are available in version 23.4 are installed. For the complete list of supported templates and their versions, see Compliance-Content-support-and-requirements.
    • Install manually by using the content installer. Ensure that you use the content installer of the same version as the Application Server version. For information about how to install the compliance content manually, see Walkthrough-Loading-compliance-content. 
      When you use this method, you have the flexibility to choose the template that you want to install from the set of templates that are available in version 23.4.

Before you begin

Before you import this template, make sure that the following requirements are met:

  • Check the default values for the template's local and global properties and make sure that they meet the organization standards.
  • Rename any existing customized template before you import the latest template.
  • Back up the extended_objects folder located in the <APPRSERVER_INSTALL_DIR>/share/sensors directory on all the Application Servers in a multiple Application Server environment. This folder contains the extended object scripts.
  • Perform the following tasks before you run the compliance checks or perform remediation: 
    • When you run compliance jobs on domain controller targets, set the DOMAIN property of the target server to DC. 
    • Leave the DOMAIN property blank for member servers (non-domain systems) and standalone systems.

Step 1: Download the files

  1. Access the following EPD link and click TSSA 23.2.00 CIS Updates for CIS - SUSE Linux Enterprise Server 15 to download the CIS - SUSE Linux Enterprise Server 15 package:
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  2. Expand to view the checksum-related information

    Verify the downloaded content by using checksums:

    S.No

    File Name

    MD5SUM

    1

    CIS - SUSE Linux Enterprise Server 15.zip

    aa995fb6c371a3e79eeee31687d0faa9

    2

    ExtendedObjects.zip

    b6180f23e6e2cb4778ddbcc0691c686d

  3. Extract the contents of ExtendedObjects.zip to a temporary directory and copy the extracted files to the existing <APPRSERVER_INSTALL_DIR>/share/sensors directory on all the Application Servers.
  4. Move the CIS - SUSE Linux Enterprise Server 15.zip file to the server where the TrueSight Server Automation console is installed.
  5. Import blpackages.zip into the server where the TrueSight Server Automation console is installed:
    1. Extract blpackages.zip to a temporary directory.
    2. In the console, navigate to Depot -> CIS Compliance Content > Remediation Packages > CIS - SUSE Linux Enterprise Server 15.
    3. Right-click SUSE Linux Enterprise Server 15 and select Import.
    4. Select the package zip from the extracted folder.
    5. Click Finish.

Step 2: Import the compliance content

  1. Log in to the TrueSight Server Automation console.
  2. Right-click Component Templates and select Import.
    component_template.png
  3. Select the Import (Version-neutral) option and click OK.
    version_neutral.png

  4. Select the CIS - SUSE Linux Enterprise Server 15.zip package from the temporary location and click Next.
    The CIS template for CIS - SUSE Linux Enterprise Server 15 is available in the CIS - SUSE Linux Enterprise Server 15.zip  package.

    zip.png

  5. Select the Update objects according to the imported package and Preserve template group path options, and click Next.
    template_selection.png
  6. Navigate to the last screen of the wizard and then click Finish.
    finish.png
  7. After the template is imported successfully, Click OK.
    The imported template is displayed under CIS Compliance Content  >  CIS .
    successful.png 

Rules within the template

The 280 rules provided in the zip package contain the following types of rules:

  • Rules that check for compliance (audit) and provide remediation—209
  • Rules that check for compliance (audit) but do not provide remediation—54
  • Rules that do not check for compliance and do not provide remediation—17

The following are the details of the rules that are divided into parts:

  • Rules not divided into parts = 205
  • Rules divided into two parts (16 Rules) so (16* 2) = 32
  • Rules divided into three parts (9 Rules) so (9* 3) = 27
  • Rules divided into four parts (1 Rule) so (1* 4) = 4
  • Rules divided into six parts (2 Rule) so (2* 6) = 12

The current rule count according to CIS SUSE Linux Enterprise 15 template after running the compliance job is 280 (205+32+27+4+12).

 

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