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CIS SUSE Linux Enterprise 12 Benchmark Level 2 - Workstation

Rules and Groups employed by this XCCDF Profile

  • Add nosuid Option to /dev/shm

    The <code>nosuid</code> mount option can be used to prevent execution of setuid programs in <code>/dev/shm</code>. The SUID and SGID permissions should not be required in these world-writable dire...
    Rule Medium Severity
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  • Add nodev Option to /home

    The <code>nodev</code> mount option can be used to prevent device files from being created in <code>/home</code>. Legitimate character and block devices should exist only in the <code>/dev</code> d...
    Rule Unknown Severity
    Show

  • Add nodev Option to Removable Media Partitions

    The <code>nodev</code> mount option prevents files from being interpreted as character or block devices. Legitimate character and block devices should exist only in the <code>/dev</code> directory ...
    Rule Medium Severity
    Show

  • Add noexec Option to Removable Media Partitions

    The <code>noexec</code> mount option prevents the direct execution of binaries on the mounted filesystem. Preventing the direct execution of binaries from removable media (such as a USB key) provid...
    Rule Medium Severity
    Show

  • Add nosuid Option to Removable Media Partitions

    The <code>nosuid</code> mount option prevents set-user-identifier (SUID) and set-group-identifier (SGID) permissions from taking effect. These permissions allow users to execute binaries with the s...
    Rule Medium Severity
    Show

  • Add nodev Option to /tmp

    The <code>nodev</code> mount option can be used to prevent device files from being created in <code>/tmp</code>. Legitimate character and block devices should not exist within temporary directories...
    Rule Medium Severity
    Show

  • Add noexec Option to /tmp

    The <code>noexec</code> mount option can be used to prevent binaries from being executed out of <code>/tmp</code>. Add the <code>noexec</code> option to the fourth column of <code>/etc/fstab</code>...
    Rule Medium Severity
    Show

  • Add nosuid Option to /tmp

    The <code>nosuid</code> mount option can be used to prevent execution of setuid programs in <code>/tmp</code>. The SUID and SGID permissions should not be required in these world-writable directori...
    Rule Medium Severity
    Show

  • Add nodev Option to /var/tmp

    The <code>nodev</code> mount option can be used to prevent device files from being created in <code>/var/tmp</code>. Legitimate character and block devices should not exist within temporary directo...
    Rule Medium Severity
    Show

  • Add noexec Option to /var/tmp

    The <code>noexec</code> mount option can be used to prevent binaries from being executed out of <code>/var/tmp</code>. Add the <code>noexec</code> option to the fourth column of <code>/etc/fstab</c...
    Rule Medium Severity
    Show

  • Add nosuid Option to /var/tmp

    The <code>nosuid</code> mount option can be used to prevent execution of setuid programs in <code>/var/tmp</code>. The SUID and SGID permissions should not be required in these world-writable direc...
    Rule Medium Severity
    Show

  • Restrict Programs from Dangerous Execution Patterns

    The recommendations in this section are designed to ensure that the system's features to protect against potentially dangerous program execution are activated. These protections are applied at the ...
    Group
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  • Disable Core Dumps

    A core dump file is the memory image of an executable program when it was terminated by the operating system due to errant behavior. In most cases, only software developers legitimately need to acc...
    Group
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  • Disable core dump backtraces

    The <code>ProcessSizeMax</code> option in <code>[Coredump]</code> section of <code>/etc/systemd/coredump.conf</code> specifies the maximum size in bytes of a core which will be processed. Core dump...
    Rule Medium Severity
    Show

  • Disable storing core dump

    The <code>Storage</code> option in <code>[Coredump]</code> section of <code>/etc/systemd/coredump.conf</code> or <code>/etc/systemd/coredump.conf.d/*.conf</code> can be set to <code>none</code> to ...
    Rule Medium Severity
    Show

  • Disable Core Dumps for All Users

    To disable core dumps for all users, add the following line to <code>/etc/security/limits.conf</code>, or to a file within the <code>/etc/security/limits.d/</code> directory: <pre>* hard core...
    Rule Medium Severity
    Show

  • Disable Core Dumps for SUID programs

    To set the runtime status of the <code>fs.suid_dumpable</code> kernel parameter, run the following command: <pre>$ sudo sysctl -w fs.suid_dumpable=0</pre> To make sure that the setting is persisten...
    Rule Medium Severity
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  • Enable ExecShield

    ExecShield describes kernel features that provide protection against exploitation of memory corruption errors such as buffer overflows. These features include random placement of the stack and othe...
    Group
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  • Enable Randomized Layout of Virtual Address Space

    To set the runtime status of the <code>kernel.randomize_va_space</code> kernel parameter, run the following command: <pre>$ sudo sysctl -w kernel.randomize_va_space=2</pre> To make sure that the se...
    Rule Medium Severity
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  • Enable Execute Disable (XD) or No Execute (NX) Support on x86 Systems

    Recent processors in the x86 family support the ability to prevent code execution on a per memory page basis. Generically and on AMD processors, this ability is called No Execute (NX), while on Int...
    Group
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  • Enable NX or XD Support in the BIOS

    Reboot the system and enter the BIOS or Setup configuration menu. Navigate the BIOS configuration menu and make sure that the option is enabled. The setting may be located under a Security section....
    Rule Medium Severity
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  • Install PAE Kernel on Supported 32-bit x86 Systems

    Systems that are using the 64-bit x86 kernel package do not need to install the kernel-PAE package because the 64-bit x86 kernel already includes this support. However, if the system is 32-bit and ...
    Rule Unknown Severity
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  • Services

    The best protection against vulnerable software is running less software. This section describes how to review the software which SUSE Linux Enterprise 12 installs on a system and disable software ...
    Group
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  • Avahi Server

    The Avahi daemon implements the DNS Service Discovery and Multicast DNS protocols, which provide service and host discovery on a network. It allows a system to automatically identify resources on t...
    Group
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  • Disable Avahi Server if Possible

    Because the Avahi daemon service keeps an open network port, it is subject to network attacks. Disabling it can reduce the system's vulnerability to such attacks.
    Group
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  • Uninstall avahi-autoipd Server Package

    If the system does not need to have an Avahi server which implements the DNS Service Discovery and Multicast DNS protocols, the avahi-autoipd and avahi packages can be uninstalled.
    Rule Medium Severity
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  • Uninstall avahi Server Package

    If the system does not need to have an Avahi server which implements the DNS Service Discovery and Multicast DNS protocols, the avahi-autoipd and avahi packages can be uninstalled.
    Rule Medium Severity
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  • Disable Avahi Server Software

    The avahi-daemon service can be disabled with the following command: 
    $ sudo systemctl mask --now avahi-daemon.service
    Rule Medium Severity
    Show

  • Cron and At Daemons

    The cron and at services are used to allow commands to be executed at a later time. The cron service is required by almost all systems to perform necessary maintenance tasks, while at may or may no...
    Group
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  • Install the cron service

    The Cron service should be installed.
    Rule Medium Severity
    Show

  • Enable cron Service

    The <code>crond</code> service is used to execute commands at preconfigured times. It is required by almost all systems to perform necessary maintenance tasks, such as notifying root of system acti...
    Rule Medium Severity
    Show

  • Verify Group Who Owns cron.d

    To properly set the group owner of /etc/cron.d, run the command: 
    $ sudo chgrp root /etc/cron.d
    Rule Medium Severity
    Show

  • Verify Group Who Owns cron.daily

    To properly set the group owner of /etc/cron.daily, run the command: 
    $ sudo chgrp root /etc/cron.daily
    Rule Medium Severity
    Show

  • Verify Group Who Owns cron.hourly

    To properly set the group owner of /etc/cron.hourly, run the command: 
    $ sudo chgrp root /etc/cron.hourly
    Rule Medium Severity
    Show

  • Verify Group Who Owns cron.monthly

    To properly set the group owner of /etc/cron.monthly, run the command: 
    $ sudo chgrp root /etc/cron.monthly
    Rule Medium Severity
    Show

  • Verify Group Who Owns cron.weekly

    To properly set the group owner of /etc/cron.weekly, run the command: 
    $ sudo chgrp root /etc/cron.weekly
    Rule Medium Severity
    Show

  • Verify Group Who Owns Crontab

    To properly set the group owner of /etc/crontab, run the command: 
    $ sudo chgrp root /etc/crontab
    Rule Medium Severity
    Show

  • Verify Owner on cron.d

    To properly set the owner of /etc/cron.d, run the command: 
    $ sudo chown root /etc/cron.d
    Rule Medium Severity
    Show

  • Verify Owner on cron.daily

    To properly set the owner of /etc/cron.daily, run the command: 
    $ sudo chown root /etc/cron.daily
    Rule Medium Severity
    Show

  • Verify Owner on cron.hourly

    To properly set the owner of /etc/cron.hourly, run the command: 
    $ sudo chown root /etc/cron.hourly
    Rule Medium Severity
    Show

  • Verify Owner on cron.monthly

    To properly set the owner of /etc/cron.monthly, run the command: 
    $ sudo chown root /etc/cron.monthly
    Rule Medium Severity
    Show

  • Verify Owner on cron.weekly

    To properly set the owner of /etc/cron.weekly, run the command: 
    $ sudo chown root /etc/cron.weekly
    Rule Medium Severity
    Show

  • Verify Owner on crontab

    To properly set the owner of /etc/crontab, run the command: 
    $ sudo chown root /etc/crontab
    Rule Medium Severity
    Show

  • Verify Permissions on cron.d

    To properly set the permissions of /etc/cron.d, run the command: 
    $ sudo chmod 0700 /etc/cron.d
    Rule Medium Severity
    Show

  • Verify Permissions on cron.daily

    To properly set the permissions of /etc/cron.daily, run the command: 
    $ sudo chmod 0700 /etc/cron.daily
    Rule Medium Severity
    Show

  • Verify Permissions on cron.hourly

    To properly set the permissions of /etc/cron.hourly, run the command: 
    $ sudo chmod 0700 /etc/cron.hourly
    Rule Medium Severity
    Show

  • Verify Permissions on cron.monthly

    To properly set the permissions of /etc/cron.monthly, run the command: 
    $ sudo chmod 0700 /etc/cron.monthly
    Rule Medium Severity
    Show

  • Verify Permissions on cron.weekly

    To properly set the permissions of /etc/cron.weekly, run the command: 
    $ sudo chmod 0700 /etc/cron.weekly
    Rule Medium Severity
    Show

  • Verify Permissions on crontab

    To properly set the permissions of /etc/crontab, run the command: 
    $ sudo chmod 0600 /etc/crontab
    Rule Medium Severity
    Show

  • Restrict at and cron to Authorized Users if Necessary

    The <code>/etc/cron.allow</code> and <code>/etc/at.allow</code> files contain lists of users who are allowed to use <code>cron</code> and at to delay execution of processes. If these files exist an...
    Group
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