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IBM AIX 7.x 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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  • The AIX root accounts list of preloaded libraries must be empty.

    &lt;VulnDiscussion&gt;The library preload list environment variable contains a list of libraries for the dynamic linker to load before loading the ...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00229

    <GroupDescription></GroupDescription>
    Group
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  • AIX must not have accounts configured with blank or null passwords.

    &lt;VulnDiscussion&gt;If an account is configured for password authentication but does not have an assigned password, it may be possible to log int...
    Rule High Severity
    Show

  • SRG-OS-000480-GPOS-00230

    <GroupDescription></GroupDescription>
    Group
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  • The AIX root accounts home directory (other than /) must have mode 0700.

    &lt;VulnDiscussion&gt;Users' home directories/folders may contain information of a sensitive nature. Non-privileged users should coordinate any sha...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00230

    <GroupDescription></GroupDescription>
    Group
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  • The AIX root accounts home directory must not have an extended ACL.

    &lt;VulnDiscussion&gt;Excessive permissions on root home directories allow unauthorized access to root user files.&lt;/VulnDiscussion&gt;&lt;FalseP...
    Rule Medium Severity
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  • SRG-OS-000023-GPOS-00006

    <GroupDescription></GroupDescription>
    Group
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  • AIX must display the Standard Mandatory DoD Notice and Consent Banner before granting local or remote login access to the system.

    &lt;VulnDiscussion&gt;Display of a standardized and approved use notification before granting access to the operating system ensures privacy and se...
    Rule Medium Severity
    Show

  • SRG-OS-000023-GPOS-00006

    <GroupDescription></GroupDescription>
    Group
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  • The Department of Defense (DoD) login banner must be displayed immediately prior to, or as part of, graphical desktop environment login prompts on AIX.

    &lt;VulnDiscussion&gt;Display of a standardized and approved use notification before granting access to the operating system ensures privacy and se...
    Rule Medium Severity
    Show

  • SRG-OS-000023-GPOS-00006

    <GroupDescription></GroupDescription>
    Group
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  • The Department of Defense (DoD) login banner must be displayed during SSH, sftp, and scp login sessions on AIX.

    &lt;VulnDiscussion&gt;Display of a standardized and approved use notification before granting access to the operating system ensures privacy and se...
    Rule Medium Severity
    Show

  • SRG-OS-000228-GPOS-00088

    <GroupDescription></GroupDescription>
    Group
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  • Any publically accessible connection to AIX operating system must display the Standard Mandatory DoD Notice and Consent Banner before granting access to the system.

    &lt;VulnDiscussion&gt;Display of a standardized and approved use notification before granting access to the publicly accessible operating system en...
    Rule Medium Severity
    Show

  • SRG-OS-000074-GPOS-00042

    <GroupDescription></GroupDescription>
    Group
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  • IF LDAP is used, AIX LDAP client must use SSL to authenticate with LDAP server.

    &lt;VulnDiscussion&gt;While LDAP client's authentication type is ldap_auth (server-side authentication), the client sends password to the server in...
    Rule High Severity
    Show

  • SRG-OS-000383-GPOS-00166

    <GroupDescription></GroupDescription>
    Group
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  • If LDAP authentication is required, AIX must setup LDAP client to refresh user and group caches less than a day.

    &lt;VulnDiscussion&gt;If cached authentication information is out-of-date, the validity of the authentication information may be questionable.&lt;/...
    Rule Medium Severity
    Show

  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
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  • The AIX /etc/passwd, /etc/security/passwd, and/or /etc/group files must not contain a plus (+) without defining entries for NIS+ netgroups or LDAP netgroups.

    &lt;VulnDiscussion&gt;A plus (+) in system accounts files causes the system to lookup the specified entry using NIS. If the system is not using NIS...
    Rule Medium Severity
    Show

  • SRG-OS-000185-GPOS-00079

    <GroupDescription></GroupDescription>
    Group
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  • AIX must protect the confidentiality and integrity of all information at rest.

    &lt;VulnDiscussion&gt;Information at rest refers to the state of information when it is located on a secondary storage device (e.g., disk drive and...
    Rule Medium Severity
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  • SRG-OS-000355-GPOS-00143

    <GroupDescription></GroupDescription>
    Group
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  • AIX must provide time synchronization applications that can synchronize the system clock to external time sources at least every 24 hours.

    &lt;VulnDiscussion&gt;Inaccurate time stamps make it more difficult to correlate events and can lead to an inaccurate analysis. Determining the cor...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
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  • All AIX NFS anonymous UIDs and GIDs must be configured to values without permissions.

    &lt;VulnDiscussion&gt;When an NFS server is configured to deny remote root access, a selected UID and GID are used to handle requests from the remo...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
    Show

  • AIX nosuid option must be enabled on all NFS client mounts.

    &lt;VulnDiscussion&gt;Enabling the nosuid mount option prevents the system from granting owner or group-owner privileges to programs with the suid ...
    Rule Medium Severity
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  • SRG-OS-000030-GPOS-00011

    <GroupDescription></GroupDescription>
    Group
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  • AIX must be configured to allow users to directly initiate a session lock for all connection types.

    &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-000031-GPOS-00012

    <GroupDescription></GroupDescription>
    Group
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  • AIX CDE must conceal, via the session lock, information previously visible on the display with a publicly viewable image.

    &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-000125-GPOS-00065

    <GroupDescription></GroupDescription>
    Group
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  • AIX must employ strong authenticators in the establishment of nonlocal maintenance and diagnostic sessions.

    &lt;VulnDiscussion&gt;If maintenance tools are used by unauthorized personnel, they may accidentally or intentionally damage or compromise the syst...
    Rule High Severity
    Show

  • SRG-OS-000250-GPOS-00093

    <GroupDescription></GroupDescription>
    Group
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  • If LDAP authentication is required on AIX, SSL must be used between LDAP clients and the LDAP servers to protect the integrity of remote access sessions.

    &lt;VulnDiscussion&gt;If LDAP authentication is used, SSL must be used between LDAP clients and the LDAP servers to protect the integrity of remote...
    Rule Medium Severity
    Show

  • SRG-OS-000403-GPOS-00182

    <GroupDescription></GroupDescription>
    Group
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  • AIX must only allow the use of DoD PKI-established certificate authorities for verification of the establishment of protected sessions.

    &lt;VulnDiscussion&gt;Untrusted Certificate Authorities (CA) can issue certificates, but they may be issued by organizations or individuals that se...
    Rule Medium Severity
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  • SRG-OS-000120-GPOS-00061

    <GroupDescription></GroupDescription>
    Group
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  • AIX must implement NIST FIPS-validated cryptography for the following: to provision digital signatures, to generate cryptographic hashes, and to protect unclassified information requiring confidentiality and cryptographic protection in accordance with applicable federal laws, Executive Orders, directives, policies, regulations, and standards.

    &lt;VulnDiscussion&gt;FIPS 140-2 is the current standard for validating that mechanisms used to access cryptographic modules utilize authentication...
    Rule Medium Severity
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  • SRG-OS-000069-GPOS-00037

    <GroupDescription></GroupDescription>
    Group
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  • AIX must enforce password complexity by requiring that at least one upper-case character be used.

    &lt;VulnDiscussion&gt;Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, ...
    Rule High Severity
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  • SRG-OS-000070-GPOS-00038

    <GroupDescription></GroupDescription>
    Group
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  • AIX must enforce password complexity by requiring that at least one lower-case character be used.

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

  • SRG-OS-000071-GPOS-00039

    <GroupDescription></GroupDescription>
    Group
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  • AIX must enforce password complexity by requiring that at least one numeric character be used.

    &lt;VulnDiscussion&gt;Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, ...
    Rule High Severity
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  • SRG-OS-000072-GPOS-00040

    <GroupDescription></GroupDescription>
    Group
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  • AIX must require the change of at least 50% of the total number of characters when passwords are changed.

    &lt;VulnDiscussion&gt;If the operating system allows the user to consecutively reuse extensive portions of passwords, this increases the chances of...
    Rule High Severity
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