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IBM AIX 7.x Security Technical Implementation Guide

Rules, Groups, and Values defined within the XCCDF Benchmark

  • The talk daemon must be disabled on AIX.

    <VulnDiscussion>This talk service is used to establish an interactive two-way communication link between two UNIX users. Unless required the ...
    Rule Medium Severity
    Show

  • SRG-OS-000095-GPOS-00049

    <GroupDescription></GroupDescription>
    Group
    Show

  • The ntalk daemon must be disabled on AIX.

    &lt;VulnDiscussion&gt;This service establishes a two-way communication link between two users, either locally or remotely. Unless required the ntal...
    Rule High Severity
    Show

  • SRG-OS-000095-GPOS-00049

    <GroupDescription></GroupDescription>
    Group
    Show

  • The sprayd daemon must be disabled on AIX.

    &lt;VulnDiscussion&gt;The sprayd service is used as a tool to generate UDP packets for testing and diagnosing network problems. The service must be...
    Rule Medium Severity
    Show

  • SRG-OS-000095-GPOS-00049

    <GroupDescription></GroupDescription>
    Group
    Show

  • The finger daemon must be disabled on AIX.

    &lt;VulnDiscussion&gt;The fingerd daemon provides the server function for the finger command. This allows users to view real-time pertinent user lo...
    Rule Medium Severity
    Show

  • SRG-OS-000095-GPOS-00049

    <GroupDescription></GroupDescription>
    Group
    Show

  • The instsrv daemon must be disabled on AIX.

    &lt;VulnDiscussion&gt;The instsrv service is part of the Network Installation Tools, used for servicing servers running AIX 3.2. This service shoul...
    Rule Medium Severity
    Show

  • SRG-OS-000095-GPOS-00049

    <GroupDescription></GroupDescription>
    Group
    Show

  • The echo daemon must be disabled on AIX.

    &lt;VulnDiscussion&gt;The echo service can be used in Denial of Service or SMURF attacks. It can also be used by someone else to get through a fire...
    Rule Medium Severity
    Show

  • SRG-OS-000095-GPOS-00049

    <GroupDescription></GroupDescription>
    Group
    Show

  • AIX must provide xlock command in the CDE environment to let users retain their sessions lock until users are reauthenticated.

    &lt;VulnDiscussion&gt;All systems are vulnerable if terminals are left logged in and unattended. Leaving system terminals unsecure poses a potentia...
    Rule Medium Severity
    Show

  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
    Show

  • AIX must contain no .forward files.

    &lt;VulnDiscussion&gt;The .forward file allows users to automatically forward mail to another system. Use of .forward files could allow the unautho...
    Rule Low Severity
    Show

  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
    Show

  • The sendmail server must have the debug feature disabled on AIX systems.

    &lt;VulnDiscussion&gt;Debug mode is a feature present in older versions of Sendmail which, if not disabled, may allow an attacker to gain access to...
    Rule Medium Severity
    Show

  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
    Show

  • AIX must turn off TCP forwarding for the SSH daemon.

    &lt;VulnDiscussion&gt;SSH TCP connection forwarding provides a mechanism to establish TCP connections proxied by the SSH server. This function can ...
    Rule Medium Severity
    Show

  • SRG-OS-000480-GPOS-00229

    <GroupDescription></GroupDescription>
    Group
    Show

  • The AIX SSH daemon must be configured to disable empty passwords.

    &lt;VulnDiscussion&gt;When password authentication is allowed, PermitEmptyPasswords specifies whether the server allows login to accounts with empt...
    Rule Medium Severity
    Show

  • SRG-OS-000480-GPOS-00229

    <GroupDescription></GroupDescription>
    Group
    Show

  • The AIX SSH daemon must be configured to disable user .rhosts files.

    &lt;VulnDiscussion&gt;Trust .rhost file means a compromise on one host can allow an attacker to move trivially to other hosts.&lt;/VulnDiscussion&g...
    Rule Medium Severity
    Show

  • SRG-OS-000480-GPOS-00229

    <GroupDescription></GroupDescription>
    Group
    Show

  • The AIX SSH daemon must be configured to not use host-based authentication.

    &lt;VulnDiscussion&gt;SSH trust relationships mean a compromise on one host can allow an attacker to move trivially to other hosts.&lt;/VulnDiscuss...
    Rule Medium Severity
    Show

  • SRG-OS-000480-GPOS-00229

    <GroupDescription></GroupDescription>
    Group
    Show

  • The AIX SSH daemon must not allow RhostsRSAAuthentication.

    &lt;VulnDiscussion&gt;If SSH permits rhosts RSA authentication, a user may be able to log in based on the keys of the host originating the request ...
    Rule Medium Severity
    Show

  • SRG-OS-000480-GPOS-00232

    <GroupDescription></GroupDescription>
    Group
    Show

  • If AIX SSH daemon is required, the SSH daemon must only listen on the approved listening IP addresses.

    &lt;VulnDiscussion&gt;The SSH daemon should only listen on the approved listening IP addresses. Otherwise the SSH service could be subject to unaut...
    Rule Medium Severity
    Show

  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
    Show

  • AIX system must require authentication upon booting into single-user and maintenance modes.

    &lt;VulnDiscussion&gt;This prevents attackers with physical access from trivially bypassing security on the machine and gaining root access. Such a...
    Rule Medium Severity
    Show

  • SRG-OS-000281-GPOS-00111

    <GroupDescription></GroupDescription>
    Group
    Show

  • The control script lists of preloaded libraries must contain only absolute paths on AIX systems.

    &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
    Show

  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
    Show

  • AIX must define default permissions for all authenticated users in such a way that the user can only read and modify their own files.

    &lt;VulnDiscussion&gt;Setting the most restrictive default permissions ensures that when new accounts are created they do not have unnecessary acce...
    Rule Medium Severity
    Show

  • SRG-OS-000480-GPOS-00229

    <GroupDescription></GroupDescription>
    Group
    Show

  • There must be no .rhosts, .shosts, hosts.equiv, or shosts.equiv files on the AIX system.

    &lt;VulnDiscussion&gt;Trust files are convenient, but when used in conjunction with the remote login services, they can allow unauthenticated acces...
    Rule Medium Severity
    Show

  • SRG-OS-000480-GPOS-00229

    <GroupDescription></GroupDescription>
    Group
    Show

  • AIX run control scripts executable search paths must contain only absolute paths.

    &lt;VulnDiscussion&gt;The executable search path (typically the PATH environment variable) contains a list of directories for the shell to search t...
    Rule Medium Severity
    Show

  • SRG-OS-000074-GPOS-00042

    <GroupDescription></GroupDescription>
    Group
    Show

  • The AIX rsh daemon must be disabled.

    &lt;VulnDiscussion&gt;The rsh daemon permits username and passwords to be passed over the network in clear text.&lt;/VulnDiscussion&gt;&lt;FalsePos...
    Rule High Severity
    Show

  • SRG-OS-000074-GPOS-00042

    <GroupDescription></GroupDescription>
    Group
    Show

  • The AIX rlogind service must be disabled.

    &lt;VulnDiscussion&gt;The rlogin daemon permits username and passwords to be passed over the network in clear text.&lt;/VulnDiscussion&gt;&lt;False...
    Rule High Severity
    Show

  • SRG-OS-000095-GPOS-00049

    <GroupDescription></GroupDescription>
    Group
    Show

  • The AIX qdaemon must be disabled if local or remote printing is not required.

    &lt;VulnDiscussion&gt;The qdaemon program is the printing scheduling daemon that manages the submission of print jobs to the piobe service. To pre...
    Rule Medium Severity
    Show

  • SRG-OS-000095-GPOS-00049

    <GroupDescription></GroupDescription>
    Group
    Show

  • If AIX system does not act as a remote print server for other servers, the lpd daemon must be disabled.

    &lt;VulnDiscussion&gt;The lpd daemon accepts remote print jobs from other systems. To prevent remote attacks this daemon should not be enabled unl...
    Rule Medium Severity
    Show

  • SRG-OS-000095-GPOS-00049

    <GroupDescription></GroupDescription>
    Group
    Show

  • If AIX system does not support either local or remote printing, the piobe service must be disabled.

    &lt;VulnDiscussion&gt;The piobe daemon is the I/O back end for the printing process, handling the job scheduling and spooling. To prevent remote a...
    Rule Medium Severity
    Show

  • SRG-OS-000095-GPOS-00049

    <GroupDescription></GroupDescription>
    Group
    Show

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