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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-000029-GPOS-00010

    <GroupDescription></GroupDescription>
    Group
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  • SLEM 5 must initiate a session lock after a 15-minute period of inactivity.

    &lt;VulnDiscussion&gt;A session time-out lock is a temporary action taken when a user stops work and moves away from the immediate physical vicinit...
    Rule Medium Severity
    Show

  • SRG-OS-000021-GPOS-00005

    <GroupDescription></GroupDescription>
    Group
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  • SLEM 5 must lock an account after three consecutive invalid access attempts.

    &lt;VulnDiscussion&gt;By limiting the number of failed access attempts, the risk of unauthorized system access via user password guessing, otherwis...
    Rule Medium Severity
    Show

  • SRG-OS-000480-GPOS-00226

    <GroupDescription></GroupDescription>
    Group
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  • SLEM 5 must enforce a delay of at least five seconds between logon prompts following a failed logon attempt via pluggable authentication modules (PAM).

    &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
    Show

  • SRG-OS-000021-GPOS-00005

    <GroupDescription></GroupDescription>
    Group
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  • SLEM 5 must use the default pam_tally2 tally directory.

    &lt;VulnDiscussion&gt;By limiting the number of failed logon attempts, the risk of unauthorized system access via user password guessing, otherwise...
    Rule Medium Severity
    Show

  • SRG-OS-000027-GPOS-00008

    <GroupDescription></GroupDescription>
    Group
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  • SLEM 5 must limit the number of concurrent sessions to 10 for all accounts and/or account types.

    &lt;VulnDiscussion&gt;SLEM 5 management includes the ability to control the number of users and user sessions that use a SLEM 5. Limiting the numbe...
    Rule Low Severity
    Show

  • SRG-OS-000134-GPOS-00068

    <GroupDescription></GroupDescription>
    Group
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  • SLEM 5 must reauthenticate users when changing authenticators, roles, or escalating privileges.

    &lt;VulnDiscussion&gt;Without reauthentication, users may access resources or perform tasks for which they do not have authorization. When SLEM 5 ...
    Rule Medium Severity
    Show

  • SRG-OS-000373-GPOS-00156

    <GroupDescription></GroupDescription>
    Group
    Show

  • SLEM 5 must have policycoreutils package installed.

    &lt;VulnDiscussion&gt;Without verification of the security functions, security functions may not operate correctly and the failure may go unnoticed...
    Rule Low Severity
    Show

  • SRG-OS-000134-GPOS-00068

    <GroupDescription></GroupDescription>
    Group
    Show

  • SLEM 5 must use a Linux Security Module configured to enforce limits on system services.

    &lt;VulnDiscussion&gt;Without verification of the security functions, security functions may not operate correctly and the failure may go unnoticed...
    Rule High Severity
    Show

  • SRG-OS-000445-GPOS-00199

    <GroupDescription></GroupDescription>
    Group
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  • SLEM 5 must enable the SELinux targeted policy.

    &lt;VulnDiscussion&gt;Without verification of the security functions, security functions may not operate correctly and the failure may go unnoticed...
    Rule Medium Severity
    Show

  • SRG-OS-000324-GPOS-00125

    <GroupDescription></GroupDescription>
    Group
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  • SLEM 5 must prevent nonprivileged users from executing privileged functions, including disabling, circumventing, or altering implemented security safeguards/countermeasures.

    &lt;VulnDiscussion&gt;Preventing nonprivileged users from executing privileged functions mitigates the risk that unauthorized individuals or proces...
    Rule Medium Severity
    Show

  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
    Show

  • SLEM 5 must use the invoking user's password for privilege escalation when using "sudo".

    &lt;VulnDiscussion&gt;The sudoers security policy requires that users authenticate themselves before they can use sudo. When sudoers requires authe...
    Rule Medium Severity
    Show

  • SRG-OS-000373-GPOS-00156

    <GroupDescription></GroupDescription>
    Group
    Show

  • SLEM 5 must configure the Linux Pluggable Authentication Modules (PAM) to only store encrypted representations of passwords.

    &lt;VulnDiscussion&gt;Passwords need to be protected at all times, and encryption is the standard method for protecting passwords. If passwords are...
    Rule Medium Severity
    Show

  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
    Show

  • SLEM 5 must require reauthentication when using the "sudo" command.

    &lt;VulnDiscussion&gt;Without reauthentication, users may access resources or perform tasks for which they do not have authorization. When operati...
    Rule Medium Severity
    Show

  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
    Show

  • SLEM 5 must restrict privilege elevation to authorized personnel.

    &lt;VulnDiscussion&gt;The sudo command allows a user to execute programs with elevated (administrator) privileges. It prompts the user for their pa...
    Rule Medium Severity
    Show

  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
    Show

  • SLEM 5 must specify the default "include" directory for the /etc/sudoers file.

    &lt;VulnDiscussion&gt;The "sudo" command allows authorized users to run programs (including shells) as other users, system users, and root. The "/e...
    Rule Medium Severity
    Show

  • SRG-OS-000069-GPOS-00037

    <GroupDescription></GroupDescription>
    Group
    Show

  • SLEM 5 must enforce passwords that contain at least one uppercase character.

    &lt;VulnDiscussion&gt;Use of a complex password helps increase the time and resources required to compromise the password. Password complexity, or ...
    Rule Medium Severity
    Show

  • SRG-OS-000070-GPOS-00038

    <GroupDescription></GroupDescription>
    Group
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  • SLEM 5 must enforce passwords that contain at least one lowercase character.

    &lt;VulnDiscussion&gt;Use of a complex password helps increase the time and resources required to compromise the password. Password complexity, or ...
    Rule Medium Severity
    Show

  • SRG-OS-000071-GPOS-00039

    <GroupDescription></GroupDescription>
    Group
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  • SLEM 5 must enforce passwords that contain at least one numeric character.

    &lt;VulnDiscussion&gt;Use of a complex password helps increase the time and resources required to compromise the password. Password complexity, or ...
    Rule Medium Severity
    Show

  • SRG-OS-000266-GPOS-00101

    <GroupDescription></GroupDescription>
    Group
    Show

  • SLEM 5 must enforce passwords that contain at least one special character.

    &lt;VulnDiscussion&gt;Use of a complex password helps increase the time and resources required to compromise the password. Password complexity or s...
    Rule Medium Severity
    Show

  • SRG-OS-000480-GPOS-00225

    <GroupDescription></GroupDescription>
    Group
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  • SLEM 5 must prevent the use of dictionary words for passwords.

    &lt;VulnDiscussion&gt;If SLEM 5 allows the user to select passwords based on dictionary words, this increases the chances of password compromise by...
    Rule Medium Severity
    Show

  • SRG-OS-000078-GPOS-00046

    <GroupDescription></GroupDescription>
    Group
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  • SLEM 5 must employ passwords with a minimum of 15 characters.

    &lt;VulnDiscussion&gt;The shorter the password, the lower the number of possible combinations that need to be tested before the password is comprom...
    Rule Medium Severity
    Show

  • SRG-OS-000072-GPOS-00040

    <GroupDescription></GroupDescription>
    Group
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  • SLEM 5 must require the change of at least eight of the total number of characters when passwords are changed.

    &lt;VulnDiscussion&gt;If SLEM 5 allows the user to consecutively reuse extensive portions of passwords, this increases the chances of password comp...
    Rule Medium Severity
    Show

  • SRG-OS-000077-GPOS-00045

    <GroupDescription></GroupDescription>
    Group
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  • SLEM 5 must not allow passwords to be reused for a minimum of five generations.

    &lt;VulnDiscussion&gt;Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute...
    Rule Medium Severity
    Show

  • SRG-OS-000073-GPOS-00041

    <GroupDescription></GroupDescription>
    Group
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  • SLEM 5 must not be configured to allow blank or null passwords.

    &lt;VulnDiscussion&gt;Passwords need to be protected at all times, and encryption is the standard method for protecting passwords. If passwords are...
    Rule High Severity
    Show

  • SLEM 5 must not have accounts configured with blank or null passwords.

    &lt;VulnDiscussion&gt;If an account has an empty password, anyone could log on and run commands with the privileges of that account. Accounts with ...
    Rule High Severity
    Show

  • SRG-OS-000075-GPOS-00043

    <GroupDescription></GroupDescription>
    Group
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