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SUSE Linux Enterprise Micro (SLEM) 5 Security Technical Implementation Guide

Rules, Groups, and Values defined within the XCCDF Benchmark

  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
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  • SRG-OS-000375-GPOS-00160

    <GroupDescription></GroupDescription>
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  • All SLEM 5 local interactive users must have a home directory assigned in the /etc/passwd file.

    &lt;VulnDiscussion&gt;If local interactive users are not assigned a valid home directory, there is no place for the storage and control of files th...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
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  • SRG-OS-000433-GPOS-00193

    <GroupDescription></GroupDescription>
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  • SLEM 5 SSH daemon private host key files must have mode 640 or less permissive.

    &lt;VulnDiscussion&gt;If an unauthorized user obtains the private SSH host key file, the host could be impersonated.&lt;/VulnDiscussion&gt;&lt;Fals...
    Rule Medium Severity
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  • SRG-OS-000259-GPOS-00100

    <GroupDescription></GroupDescription>
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  • SRG-OS-000191-GPOS-00080

    <GroupDescription></GroupDescription>
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  • SLEM 5 must implement an endpoint security tool.

    &lt;VulnDiscussion&gt;Adding endpoint security tools can provide the capability to automatically take actions in response to malicious behavior, wh...
    Rule Medium Severity
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  • SRG-OS-000023-GPOS-00006

    <GroupDescription></GroupDescription>
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  • SLEM 5 must display the Standard Mandatory DOD Notice and Consent Banner before granting any local or remote connection to the system.

    &lt;VulnDiscussion&gt;Display of a standardized and approved use notification before granting access to SLEM 5 ensures privacy and security notific...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
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  • SLEM 5 must disable the x86 Ctrl-Alt-Delete key sequence.

    &lt;VulnDiscussion&gt;A locally logged-on user who presses Ctrl-Alt-Delete when at the console can reboot the system. If accidentally pressed, as c...
    Rule High Severity
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  • SRG-OS-000080-GPOS-00048

    <GroupDescription></GroupDescription>
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  • SLEM 5 with a basic input/output system (BIOS) must require authentication upon booting into single-user and maintenance modes.

    &lt;VulnDiscussion&gt;To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DOD-ap...
    Rule High Severity
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  • SRG-OS-000080-GPOS-00048

    <GroupDescription></GroupDescription>
    Group
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  • SLEM 5 with Unified Extensible Firmware Interface (UEFI) implemented must require authentication upon booting into single-user mode and maintenance.

    &lt;VulnDiscussion&gt;If the system allows a user to boot into single-user or maintenance mode without authentication, any user that invokes single...
    Rule High Severity
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  • SRG-OS-000138-GPOS-00069

    <GroupDescription></GroupDescription>
    Group
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  • SLEM 5 must restrict access to the kernel message buffer.

    &lt;VulnDiscussion&gt;Restricting access to the kernel message buffer limits access only to root. This prevents attackers from gaining additional s...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
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  • SLEM 5 kernel core dumps must be disabled unless needed.

    &lt;VulnDiscussion&gt;Kernel core dumps may contain the full contents of system memory at the time of the crash. Kernel core dumps may consume a co...
    Rule Medium Severity
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  • Address space layout randomization (ASLR) must be implemented by SLEM 5 to protect memory from unauthorized code execution.

    &lt;VulnDiscussion&gt;Some adversaries launch attacks with the intent of executing code in nonexecutable regions of memory or in memory locations t...
    Rule Medium Severity
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  • SRG-OS-000433-GPOS-00192

    <GroupDescription></GroupDescription>
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  • SLEM 5 must implement kptr-restrict to prevent the leaking of internal kernel addresses.

    &lt;VulnDiscussion&gt;Some adversaries launch attacks with the intent of executing code in nonexecutable regions of memory or in memory locations t...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
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  • Vendor-packaged SLEM 5 security patches and updates must be installed and up to date.

    &lt;VulnDiscussion&gt;Timely patching is critical for maintaining the operational availability, confidentiality, and integrity of information techn...
    Rule Medium Severity
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  • SRG-OS-000366-GPOS-00153

    <GroupDescription></GroupDescription>
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  • The SLEM 5 tool zypper must have gpgcheck enabled.

    &lt;VulnDiscussion&gt;Changes to any software components can have significant effects on the overall security of SLEM 5. This requirement ensures t...
    Rule High Severity
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  • SRG-OS-000437-GPOS-00194

    <GroupDescription></GroupDescription>
    Group
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  • SLEM 5 must remove all outdated software components after updated versions have been installed.

    &lt;VulnDiscussion&gt;Previous versions of software components that are not removed from the information system after updates have been installed m...
    Rule Medium Severity
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  • SRG-OS-000028-GPOS-00009

    <GroupDescription></GroupDescription>
    Group
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  • SLEM 5 must use vlock to allow for session locking.

    &lt;VulnDiscussion&gt;A session lock is a temporary action taken when a user stops work and moves away from the immediate physical vicinity of the ...
    Rule Medium Severity
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  • SRG-OS-000074-GPOS-00042

    <GroupDescription></GroupDescription>
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  • SLEM 5 must not have the telnet-server package installed.

    &lt;VulnDiscussion&gt;It is detrimental for SLEM 5 to provide, or install by default, functionality exceeding requirements or mission objectives. T...
    Rule High Severity
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  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
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  • A separate file system must be used for SLEM 5 user home directories (such as /home or an equivalent).

    &lt;VulnDiscussion&gt;The use of separate file systems for different paths can protect the system from failures resulting from a file system becomi...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
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  • SLEM 5 must use a separate file system for /var.

    &lt;VulnDiscussion&gt;The use of separate file systems for different paths can protect the system from failures resulting from a file system becomi...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
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  • SLEM 5 must use a separate file system for the system audit data path.

    &lt;VulnDiscussion&gt;The use of separate file systems for different paths can protect the system from failures resulting from a file system becomi...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
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  • SLEM 5 file systems that are being imported via Network File System (NFS) must be mounted to prevent files with the setuid and setgid bit set from being executed.

    &lt;VulnDiscussion&gt;The "nosuid" mount option causes the system to not execute "setuid" and "setgid" files with owner privileges. This option mus...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
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  • SLEM 5 file systems that are being imported via Network File System (NFS) must be mounted to prevent binary files from being executed.

    &lt;VulnDiscussion&gt;The "noexec" mount option causes the system to not execute binary files. This option must be used for mounting any file syste...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
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  • SLEM 5 file systems that are used with removable media must be mounted to prevent files with the setuid and setgid bit set from being executed.

    &lt;VulnDiscussion&gt;The "nosuid" mount option causes the system to not execute "setuid" and "setgid" files with owner privileges. This option mus...
    Rule Medium Severity
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  • SRG-OS-000185-GPOS-00079

    <GroupDescription></GroupDescription>
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  • All SLEM 5 persistent disk partitions must implement cryptographic mechanisms to prevent unauthorized disclosure or modification of all information that requires at-rest protection.

    &lt;VulnDiscussion&gt;SLEM 5 handling data requiring data-at-rest protections must employ cryptographic mechanisms to prevent unauthorized disclosu...
    Rule High Severity
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  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
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  • SLEM 5 file systems that contain user home directories must be mounted to prevent files with the setuid and setgid bit set from being executed.

    &lt;VulnDiscussion&gt;The "nosuid" mount option causes the system to not execute setuid and setgid files with owner privileges. This option must be...
    Rule Medium Severity
    Show

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