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SUSE Linux Enterprise Server 15 Security Technical Implementation Guide

Rules, Groups, and Values defined within the XCCDF Benchmark

  • SRG-OS-000468-GPOS-00212

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  • The SUSE operating system must generate audit records for all uses of the unlink, unlinkat, rename, renameat, and rmdir system calls.

    &lt;VulnDiscussion&gt;Without generating audit records specific to the security and mission needs of the organization, it would be difficult to est...
    Rule Medium Severity
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  • SRG-OS-000472-GPOS-00217

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  • The SUSE operating system must generate audit records for the /run/utmp file.

    &lt;VulnDiscussion&gt;Without generating audit records specific to the security and mission needs of the organization, it would be difficult to est...
    Rule Medium Severity
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  • SRG-OS-000472-GPOS-00217

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  • The SUSE operating system must generate audit records for the /var/log/wtmp file.

    &lt;VulnDiscussion&gt;Without generating audit records specific to the security and mission needs of the organization, it would be difficult to est...
    Rule Medium Severity
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  • SRG-OS-000472-GPOS-00217

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  • The SUSE operating system must generate audit records for the /var/log/btmp file.

    &lt;VulnDiscussion&gt;Without generating audit records specific to the security and mission needs of the organization, it would be difficult to est...
    Rule Medium Severity
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  • SRG-OS-000479-GPOS-00224

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  • The SUSE operating system must off-load audit records onto a different system or media from the system being audited.

    &lt;VulnDiscussion&gt;Information stored in one location is vulnerable to accidental or incidental deletion or alteration. Off-loading is a common...
    Rule Medium Severity
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  • SRG-OS-000479-GPOS-00224

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  • Audispd must take appropriate action when the SUSE operating system audit storage is full.

    &lt;VulnDiscussion&gt;Information stored in one location is vulnerable to accidental or incidental deletion or alteration. Off-loading is a common...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00227

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  • The SUSE operating system must not disable syscall auditing.

    &lt;VulnDiscussion&gt;By default, the SUSE operating system includes the "-a task,never" audit rule as a default. This rule suppresses syscall audi...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00226

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  • The SUSE operating system must enforce a delay of at least four seconds between logon prompts following a failed logon attempt.

    &lt;VulnDiscussion&gt;Limiting the number of logon attempts over a certain time interval reduces the chances that an unauthorized user may gain acc...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00226

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  • The SUSE operating system must enforce a delay of at least four seconds between logon prompts following a failed logon attempt.

    &lt;VulnDiscussion&gt;The SUSE operating system must enforce a delay of at least four seconds between logon prompts following a failed logon attemp...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00227

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  • There must be no .shosts files on the SUSE operating system.

    &lt;VulnDiscussion&gt;The .shosts files are used to configure host-based authentication for individual users or the system via SSH. Host-based auth...
    Rule High Severity
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  • SRG-OS-000480-GPOS-00227

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  • There must be no shosts.equiv files on the SUSE operating system.

    &lt;VulnDiscussion&gt;The shosts.equiv files are used to configure host-based authentication for the system via SSH. Host-based authentication is n...
    Rule High Severity
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  • SRG-OS-000480-GPOS-00227

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  • The SUSE operating system file integrity tool must be configured to verify Access Control Lists (ACLs).

    &lt;VulnDiscussion&gt;ACLs can provide permissions beyond those permitted through the file mode and must be verified by file integrity tools.&lt;/V...
    Rule Low Severity
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  • SRG-OS-000480-GPOS-00227

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  • The SUSE operating system file integrity tool must be configured to verify extended attributes.

    &lt;VulnDiscussion&gt;Extended attributes in file systems are used to contain arbitrary data and file metadata with security implications.&lt;/Vuln...
    Rule Low Severity
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  • SRG-OS-000480-GPOS-00227

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  • The SUSE operating system 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...
    Rule High Severity
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  • SRG-OS-000480-GPOS-00227

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  • The SUSE operating system must disable the x86 Ctrl-Alt-Delete key sequence for Graphical User Interfaces.

    &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...
    Rule High Severity
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  • SRG-OS-000480-GPOS-00227

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  • The SUSE operating system must disable the systemd Ctrl-Alt-Delete burst 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...
    Rule High Severity
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  • SRG-OS-000480-GPOS-00227

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  • All SUSE operating system 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

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  • All SUSE operating system local interactive user home directories defined in the /etc/passwd file must exist.

    &lt;VulnDiscussion&gt;If a local interactive user has a home directory defined that does not exist, the user may be given access to the / directory...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00227

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  • All SUSE operating system local interactive user home directories must have mode 0750 or less permissive.

    &lt;VulnDiscussion&gt;Excessive permissions on local interactive user home directories may allow unauthorized access to user files by other users.&...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00227

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  • All SUSE operating system local interactive user home directories must be group-owned by the home directory owner's primary group.

    &lt;VulnDiscussion&gt;If the Group Identifier (GID) of a local interactive user’s home directory is not the same as the primary GID of the user, th...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00227

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  • All SUSE operating system local initialization files must have mode 0740 or less permissive.

    &lt;VulnDiscussion&gt;Local initialization files are used to configure the user's shell environment upon logon. Malicious modification of these fil...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00227

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  • All SUSE operating system local interactive user initialization files executable search paths must contain only paths that resolve to the users home directory.

    &lt;VulnDiscussion&gt;The executable search path (typically the PATH environment variable) contains a list of directories for the shell to search t...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00227

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  • All SUSE operating system local initialization files must not execute world-writable programs.

    &lt;VulnDiscussion&gt;If user start-up files execute world-writable programs, especially in unprotected directories, they could be maliciously modi...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00227

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  • SUSE operating system 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
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  • SRG-OS-000480-GPOS-00227

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  • SUSE operating system 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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