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II - Mission Support Sensitive

Rules and Groups employed by this XCCDF Profile

  • SRG-OS-000480-GPOS-00227

    Group
  • The local initialization file lists of preloaded libraries must contain only absolute paths on AIX.

    The library preload list environment variable contains a list of libraries for the dynamic linker to load before loading the libraries required by the binary. If this list contains paths to librari...
    Rule Medium Severity
  • SRG-OS-000480-GPOS-00227

    Group
  • AIX package management tool must be used daily to verify system software.

    Verification using the system package management tool can be used to determine that system software has not been tampered with. This requirement is not applicable to systems not using package manag...
    Rule Medium Severity
  • SRG-OS-000480-GPOS-00227

    Group
  • The AIX DHCP client must not send dynamic DNS updates.

    Dynamic DNS updates transmit unencrypted information about a system including its name and address and should not be used unless needed.
    Rule Medium Severity
  • SRG-OS-000480-GPOS-00227

    Group
  • AIX must not run any routing protocol daemons unless the system is a router.

    Routing protocol daemons are typically used on routers to exchange network topology information with other routers. If this software is used when not required, system network information may be unn...
    Rule Medium Severity
  • SRG-OS-000480-GPOS-00227

    Group
  • AIX must not process ICMP timestamp requests.

    The processing of Internet Control Message Protocol (ICMP) timestamp requests increases the attack surface of the system.
    Rule Medium Severity
  • SRG-OS-000480-GPOS-00227

    Group
  • AIX must not respond to ICMPv6 echo requests sent to a broadcast address.

    Responding to broadcast ICMP echo requests facilitates network mapping and provides a vector for amplification attacks.
    Rule Medium Severity
  • SRG-OS-000480-GPOS-00228

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

    Setting the most restrictive default permissions ensures that when new accounts are created they do not have unnecessary access.
    Rule Medium Severity
  • SRG-OS-000480-GPOS-00229

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

    Trust files are convenient, but when used in conjunction with the remote login services, they can allow unauthenticated access to a system.
    Rule Medium Severity
  • SRG-OS-000480-GPOS-00229

    Group
  • The .rhosts file must not be supported in AIX PAM.

    .rhosts files are used to specify a list of hosts permitted remote access to a particular account without authenticating. The use of such a mechanism defeats strong identification and authenticatio...
    Rule Medium Severity
  • SRG-OS-000480-GPOS-00230

    Group
  • The AIX root user home directory must not be the root directory (/).

    Changing the root home directory to something other than / and assigning it a 0700 protection makes it more difficult for intruders to manipulate the system by reading the files that root places in...
    Rule Medium Severity

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