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IBM AIX 7.x Security Technical Implementation Guide

Rules, Groups, and Values defined within the XCCDF Benchmark

  • All accounts on AIX must be assigned unique User Identification Numbers (UIDs) and must authenticate organizational and non-organizational users (or processes acting on behalf of these users).

    <VulnDiscussion>To assure accountability and prevent unauthenticated access, organizational users must be identified and authenticated to pre...
    Rule High Severity
    Show

  • SRG-OS-000104-GPOS-00051

    <GroupDescription></GroupDescription>
    Group
    Show

  • The AIX SYSTEM attribute must not be set to NONE for any account.

    &lt;VulnDiscussion&gt;To assure accountability and prevent unauthenticated access, organizational users must be identified and authenticated to pre...
    Rule High Severity
    Show

  • SRG-OS-000109-GPOS-00056

    <GroupDescription></GroupDescription>
    Group
    Show

  • Direct logins to the AIX system must not be permitted to shared accounts, default accounts, application accounts, and utility accounts.

    &lt;VulnDiscussion&gt;Shared accounts (accounts where two or more people log in with the same user identification) do not provide identification an...
    Rule Medium Severity
    Show

  • SRG-OS-000112-GPOS-00057

    <GroupDescription></GroupDescription>
    Group
    Show

  • AIX must use the SSH server to implement replay-resistant authentication mechanisms for network access to privileged and non-privileged accounts.

    &lt;VulnDiscussion&gt;A replay attack may enable an unauthorized user to gain access to the operating system. Authentication sessions between the a...
    Rule High Severity
    Show

  • The AIX system must automatically remove or disable emergency accounts after the crisis is resolved or 72 hours.

    &lt;VulnDiscussion&gt;Emergency accounts are privileged accounts that are established in response to crisis situations where the need for rapid acc...
    Rule Medium Severity
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  • SRG-OS-000001-GPOS-00001

    <GroupDescription></GroupDescription>
    Group
    Show

  • The shipped /etc/security/mkuser.sys file on AIX must not be customized directly.

    &lt;VulnDiscussion&gt;The "/etc/security/mkuser.sys" script customizes the new user account when a new user is created, or a user is logging into t...
    Rule Medium Severity
    Show

  • SRG-OS-000001-GPOS-00001

    <GroupDescription></GroupDescription>
    Group
    Show

  • The regular users default primary group must be staff (or equivalent) on AIX.

    &lt;VulnDiscussion&gt;The /usr/lib/security/mkuser.default file contains the default primary groups for regular and admin users. Setting a system g...
    Rule Medium Severity
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  • SRG-OS-000259-GPOS-00100

    <GroupDescription></GroupDescription>
    Group
    Show

  • All system files, programs, and directories must be owned by a system account.

    &lt;VulnDiscussion&gt;Restricting permissions will protect the files from unauthorized modification.&lt;/VulnDiscussion&gt;&lt;FalsePositives&gt;&l...
    Rule Medium Severity
    Show

  • SRG-OS-000259-GPOS-00100

    <GroupDescription></GroupDescription>
    Group
    Show

  • AIX device files and directories must only be writable by users with a system account or as configured by the vendor.

    &lt;VulnDiscussion&gt;System device files in writable directories could be modified, removed, or used by an unprivileged user to control system har...
    Rule Medium Severity
    Show

  • SRG-OS-000114-GPOS-00059

    <GroupDescription></GroupDescription>
    Group
    Show

  • AIX must configure the ttys value for all interactive users.

    &lt;VulnDiscussion&gt;A user's "ttys" attribute controls from which device(s) the user can authenticate and log in. If the "ttys" attribute is not ...
    Rule Medium Severity
    Show

  • SRG-OS-000028-GPOS-00009

    <GroupDescription></GroupDescription>
    Group
    Show

  • AIX system must prevent the root account from directly logging in except from the system console.

    &lt;VulnDiscussion&gt;Limiting the root account direct logins to only system consoles protects the root account from direct unauthorized access fro...
    Rule Medium Severity
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