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IBM AIX 7.x Security Technical Implementation Guide

Rules, Groups, and Values defined within the XCCDF Benchmark

  • SRG-OS-000073-GPOS-00041

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  • In the event of a system failure, AIX must preserve any information necessary to determine cause of failure and any information necessary to return to operations with least disruption to mission processes.

    &lt;VulnDiscussion&gt;Failure to a known state can address safety or security in accordance with the mission/business needs of the organization. Fa...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00227

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  • The /etc/shells file must exist on AIX systems.

    &lt;VulnDiscussion&gt;The shells file (or equivalent) lists approved default shells. It helps provide layered defense to the security approach by e...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00227

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  • AIX public directories must be the only world-writable directories and world-writable files must be located only in public directories.

    &lt;VulnDiscussion&gt;World-writable files and directories make it easy for a malicious user to place potentially compromising files on the system....
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00227

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  • AIX must be configured to only boot from the system boot device.

    &lt;VulnDiscussion&gt;The ability to boot from removable media is the same as being able to boot into single user or maintenance mode without a pas...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00227

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  • AIX must not use removable media as the boot loader.

    &lt;VulnDiscussion&gt;Malicious users with removable boot media can gain access to a system configured to use removable media as the boot loader.&l...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00227

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  • If the AIX host is running an SMTP service, the SMTP greeting must not provide version information.

    &lt;VulnDiscussion&gt;The version of the SMTP service can be used by attackers to plan an attack based on vulnerabilities present in the specific v...
    Rule Low Severity
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  • SRG-OS-000480-GPOS-00227

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  • SMTP service must not have the EXPN or VRFY features active on AIX systems.

    &lt;VulnDiscussion&gt;The SMTP EXPN function allows an attacker to determine if an account exists on a system, providing significant assistance to ...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00227

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  • All global initialization file executable search paths must contain only absolute paths.

    &lt;VulnDiscussion&gt;Failure to restrict system access to authenticated users negatively impacts operating system security.&lt;/VulnDiscussion&gt;...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00227

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  • The SMTP service HELP command must not be enabled on AIX.

    &lt;VulnDiscussion&gt;The HELP command should be disabled to mask version information. The version of the SMTP service software could be used by at...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00227

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  • NIS maps must be protected through hard-to-guess domain names on AIX.

    &lt;VulnDiscussion&gt;The use of hard-to-guess NIS domain names provides additional protection from unauthorized access to the NIS directory inform...
    Rule Medium Severity
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