Guide to the Secure Configuration of Oracle Linux 7
with profile Security Profile of Oracle Linux 7 for SAPThis profile contains rules for Oracle Linux 7 Operating System in compliance with SAP note 2069760 and SAP Security Baseline Template version 1.9 Item I-8 and section 4.1.2.2. Regardless of your system's workload all of these checks should pass.
The SCAP Security Guide Project
https://www.open-scap.org/security-policies/scap-security-guide
https://www.open-scap.org/security-policies/scap-security-guide
This guide presents a catalog of security-relevant
configuration settings for Oracle Linux 7. It is a rendering of
content structured in the eXtensible Configuration Checklist Description Format (XCCDF)
in order to support security automation. The SCAP content is
is available in the
Providing system administrators with such guidance informs them how to securely configure systems under their control in a variety of network roles. Policy makers and baseline creators can use this catalog of settings, with its associated references to higher-level security control catalogs, in order to assist them in security baseline creation. This guide is a catalog, not a checklist, and satisfaction of every item is not likely to be possible or sensible in many operational scenarios. However, the XCCDF format enables granular selection and adjustment of settings, and their association with OVAL and OCIL content provides an automated checking capability. Transformations of this document, and its associated automated checking content, are capable of providing baselines that meet a diverse set of policy objectives. Some example XCCDF Profiles, which are selections of items that form checklists and can be used as baselines, are available with this guide. They can be processed, in an automated fashion, with tools that support the Security Content Automation Protocol (SCAP). The DISA STIG, which provides required settings for US Department of Defense systems, is one example of a baseline created from this guidance.
scap-security-guide
package which is developed at
https://www.open-scap.org/security-policies/scap-security-guide.
Providing system administrators with such guidance informs them how to securely configure systems under their control in a variety of network roles. Policy makers and baseline creators can use this catalog of settings, with its associated references to higher-level security control catalogs, in order to assist them in security baseline creation. This guide is a catalog, not a checklist, and satisfaction of every item is not likely to be possible or sensible in many operational scenarios. However, the XCCDF format enables granular selection and adjustment of settings, and their association with OVAL and OCIL content provides an automated checking capability. Transformations of this document, and its associated automated checking content, are capable of providing baselines that meet a diverse set of policy objectives. Some example XCCDF Profiles, which are selections of items that form checklists and can be used as baselines, are available with this guide. They can be processed, in an automated fashion, with tools that support the Security Content Automation Protocol (SCAP). The DISA STIG, which provides required settings for US Department of Defense systems, is one example of a baseline created from this guidance.
Do not attempt to implement any of the settings in
this guide without first testing them in a non-operational environment. The
creators of this guidance assume no responsibility whatsoever for its use by
other parties, and makes no guarantees, expressed or implied, about its
quality, reliability, or any other characteristic.
Profile Information
Profile Title | Security Profile of Oracle Linux 7 for SAP |
---|---|
Profile ID | xccdf_org.ssgproject.content_profile_sap |
CPE Platforms
- cpe:/o:oracle:linux:7
Revision History
Current version: 0.1.75
- draft (as of 2024-10-11)
Table of Contents
Checklist
Group Guide to the Secure Configuration of Oracle Linux 7 Group contains 10 groups and 9 rules | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Group System Settings Group contains 5 groups and 4 rules | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
[ref]
Contains rules that check correct system settings. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Group Installing and Maintaining Software Group contains 1 group and 3 rules | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
[ref]
The following sections contain information on
security-relevant choices during the initial operating system
installation process and the setup of software
updates. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Group SAP Specific Requirement Group contains 3 rules | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
[ref]
SAP (Systems, Applications and Products in Data Processing) is enterprise
software to manage business operations and customer relations. The
following section contains SAP specific requirement that is not part
of standard or common OS setting. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Group File Permissions and Masks Group contains 2 groups and 1 rule | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
[ref]
Traditional Unix security relies heavily on file and
directory permissions to prevent unauthorized users from reading or
modifying files to which they should not have access.
Several of the commands in this section search filesystems for files or directories with certain characteristics, and are intended to be run on every local partition on a given system. When the variable PART appears in one of the commands below, it means that the command is intended to be run repeatedly, with the name of each local partition substituted for PART in turn. The following command prints a list of all xfs partitions on the local system, which is the default filesystem for Oracle Linux 7 installations: $ mount -t xfs | awk '{print $3}'For any systems that use a different local filesystem type, modify this command as appropriate. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Group Verify Permissions on Important Files and Directories Group contains 1 group and 1 rule | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
[ref]
Permissions for many files on a system must be set
restrictively to ensure sensitive information is properly protected.
This section discusses important
permission restrictions which can be verified
to ensure that no harmful discrepancies have
arisen. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Group Verify Permissions on Files with Local Account Information and Credentials Group contains 1 rule | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
[ref]
The default restrictive permissions for files which act as
important security databases such as passwd , shadow ,
group , and gshadow files must be maintained. Many utilities
need read access to the passwd file in order to function properly, but
read access to the shadow file allows malicious attacks against system
passwords, and should never be enabled. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Group Services Group contains 3 groups and 5 rules | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
[ref]
The best protection against vulnerable software is running less software. This section describes how to review
the software which Oracle Linux 7 installs on a system and disable software which is not needed. It
then enumerates the software packages installed on a default Oracle Linux 7 system and provides guidance about which
ones can be safely disabled.
Oracle Linux 7 provides a convenient minimal install option that essentially installs the bare necessities for a functional system. When building Oracle Linux 7 systems, it is highly recommended to select the minimal packages and then build up the system from there. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Group Obsolete Services Group contains 2 groups and 5 rules | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
[ref]
This section discusses a number of network-visible
services which have historically caused problems for system
security, and for which disabling or severely limiting the service
has been the best available guidance for some time. As a result of
this, many of these services are not installed as part of Oracle Linux 7
by default.
Organizations which are running these services should switch to more secure equivalents as soon as possible. If it remains absolutely necessary to run one of these services for legacy reasons, care should be taken to restrict the service as much as possible, for instance by configuring host firewall software such as iptables to restrict access to the
vulnerable service to only those remote hosts which have a known
need to use it. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Group NIS Group contains 2 rules | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
[ref]
The Network Information Service (NIS), also known as 'Yellow
Pages' (YP), and its successor NIS+ have been made obsolete by
Kerberos, LDAP, and other modern centralized authentication
services. NIS should not be used because it suffers from security
problems inherent in its design, such as inadequate protection of
important authentication information. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Group Rlogin, Rsh, and Rexec Group contains 3 rules | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
[ref]
The Berkeley r-commands are legacy services which
allow cleartext remote access and have an insecure trust
model. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
Red Hat and Red Hat Enterprise Linux are either registered
trademarks or trademarks of Red Hat, Inc. in the United States and other
countries. All other names are registered trademarks or trademarks of their
respective companies.