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I - Mission Critical Classified

Rules and Groups employed by this XCCDF Profile

  • SRG-OS-000074-GPOS-00042

    <GroupDescription></GroupDescription>
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  • AIX root passwords must never be passed over a network in clear text form.

    &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
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  • SRG-OS-000075-GPOS-00043

    <GroupDescription></GroupDescription>
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  • AIX Operating systems must enforce 24 hours/1 day as the minimum password lifetime.

    &lt;VulnDiscussion&gt;Enforcing a minimum password lifetime helps to prevent repeated password changes to defeat the password reuse or history enfo...
    Rule Medium Severity
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  • SRG-OS-000076-GPOS-00044

    <GroupDescription></GroupDescription>
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  • AIX Operating systems must enforce a 60-day maximum password lifetime restriction.

    &lt;VulnDiscussion&gt;Any password, no matter how complex, can eventually be cracked. Therefore, passwords need to be changed periodically. If the ...
    Rule Medium Severity
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  • SRG-OS-000078-GPOS-00046

    <GroupDescription></GroupDescription>
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  • AIX must use Loadable Password Algorithm (LPA) password hashing algorithm.

    &lt;VulnDiscussion&gt;The default legacy password hashing algorithm, crypt(), uses only the first 8 characters from the password string, meaning th...
    Rule High Severity
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  • SRG-OS-000078-GPOS-00046

    <GroupDescription></GroupDescription>
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  • AIX must enforce a minimum 15-character password length.

    &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 High Severity
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  • SRG-OS-000266-GPOS-00101

    <GroupDescription></GroupDescription>
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  • AIX must enforce password complexity by requiring that at least one special 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 o...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00225

    <GroupDescription></GroupDescription>
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  • AIX must prevent the use of dictionary words for passwords.

    &lt;VulnDiscussion&gt;If the operating system allows the user to select passwords based on dictionary words, then this increases the chances of pas...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
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  • The password hashes stored on AIX system must have been generated using a FIPS 140-2 approved cryptographic hashing algorithm.

    &lt;VulnDiscussion&gt;Systems must employ cryptographic hashes for passwords using the SHA-2 family of algorithms or FIPS 140-2 approved successors...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
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  • If SNMP service is enabled on AIX, the default SNMP password must not be used in the /etc/snmpd.conf config file.

    &lt;VulnDiscussion&gt;Use default SNMP password increases the chance of security vulnerability on SNMP service.&lt;/VulnDiscussion&gt;&lt;FalsePosi...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
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  • AIX must require passwords to contain no more than three consecutive repeating characters.

    &lt;VulnDiscussion&gt;Passwords with excessive repeating characters may be more vulnerable to password-guessing attacks.&lt;/VulnDiscussion&gt;&lt;...
    Rule Medium Severity
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  • SRG-OS-000297-GPOS-00115

    <GroupDescription></GroupDescription>
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  • AIX must be able to control the ability of remote login for users.

    &lt;VulnDiscussion&gt;Remote access services, such as those providing remote access to network devices and information systems, which lack automate...
    Rule High Severity
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  • SRG-OS-000326-GPOS-00126

    <GroupDescription></GroupDescription>
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  • NFS file systems on AIX must be mounted with the nosuid option unless the NFS file systems contain approved setuid or setgid programs.

    &lt;VulnDiscussion&gt;The nosuid mount option causes the system to not execute setuid files with owner privileges. This option must be used for mou...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
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  • AIX removable media, remote file systems, and any file system not containing approved device files must be mounted with the nodev option.

    &lt;VulnDiscussion&gt;The nodev (or equivalent) mount option causes the system to not handle device files as system devices. This option must be us...
    Rule Medium Severity
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  • SRG-OS-000037-GPOS-00015

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  • AIX must produce audit records containing information to establish what the date, time, and type of events that occurred.

    &lt;VulnDiscussion&gt;Without establishing what type of events occurred, it would be difficult to establish, correlate, and investigate the events ...
    Rule Medium Severity
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  • SRG-OS-000039-GPOS-00017

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  • AIX must produce audit records containing information to establish where the events occurred.

    &lt;VulnDiscussion&gt;Without establishing where events occurred, it is impossible to establish, correlate, and investigate the events leading up t...
    Rule Medium Severity
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  • SRG-OS-000040-GPOS-00018

    <GroupDescription></GroupDescription>
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  • AIX must produce audit records containing information to establish the source and the identity of any individual or process associated with an event.

    &lt;VulnDiscussion&gt;Without establishing the source of the event, it is impossible to establish, correlate, and investigate the events leading up...
    Rule Medium Severity
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  • SRG-OS-000041-GPOS-00019

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  • AIX must produce audit records containing information to establish the outcome of the events.

    &lt;VulnDiscussion&gt;Without information about the outcome of events, security personnel cannot make an accurate assessment as to whether an attac...
    Rule Medium Severity
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  • SRG-OS-000042-GPOS-00020

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  • AIX must produce audit records containing the full-text recording of privileged commands.

    &lt;VulnDiscussion&gt;Reconstruction of harmful events or forensic analysis is not possible if audit records do not contain enough information. At...
    Rule Medium Severity
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  • SRG-OS-000046-GPOS-00022

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  • AIX must be configured to generate an audit record when 75% of the audit file system is full.

    &lt;VulnDiscussion&gt;It is critical for the appropriate personnel to be aware if a system is at risk of failing to process audit logs as required....
    Rule Medium Severity
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  • SRG-OS-000054-GPOS-00025

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  • AIX must provide the function to filter audit records for events of interest based upon all audit fields within audit records, support on-demand reporting requirements, and an audit reduction function that supports on-demand audit review and analysis and after-the-fact investigations of security incidents.

    &lt;VulnDiscussion&gt;The ability to specify the event criteria that are of interest provides the individuals reviewing the logs with the ability t...
    Rule Medium Severity
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  • SRG-OS-000057-GPOS-00027

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  • Audit logs on the AIX system must be owned by root.

    &lt;VulnDiscussion&gt;Unauthorized disclosure of audit records can reveal system and configuration data to attackers, thus compromising its confide...
    Rule Medium Severity
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  • SRG-OS-000057-GPOS-00027

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  • Audit logs on the AIX system must be group-owned by system.

    &lt;VulnDiscussion&gt;Unauthorized disclosure of audit records can reveal system and configuration data to attackers, thus compromising its confide...
    Rule Medium Severity
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  • SRG-OS-000057-GPOS-00027

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  • Audit logs on the AIX system must be set to 660 or less permissive.

    &lt;VulnDiscussion&gt;Unauthorized disclosure of audit records can reveal system and configuration data to attackers, thus compromising its confide...
    Rule Medium Severity
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  • SRG-OS-000062-GPOS-00031

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  • AIX must provide audit record generation functionality for DoD-defined auditable events.

    &lt;VulnDiscussion&gt;Without the capability to generate audit records, it would be difficult to establish, correlate, and investigate the events r...
    Rule Medium Severity
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  • SRG-OS-000254-GPOS-00095

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  • AIX must start audit at boot.

    &lt;VulnDiscussion&gt;If auditing is enabled late in the start-up process, the actions of some start-up processes may not be audited. Some audit sy...
    Rule Medium Severity
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