I - Mission Critical Sensitive
Rules and Groups employed by this XCCDF Profile
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SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
The global initialization file lists of preloaded libraries must contain only absolute paths on AIX.
<VulnDiscussion>The library preload list environment variable contains a list of libraries for the dynamic linker to load before loading the ...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
The local initialization file library search paths must contain only absolute paths on AIX.
<VulnDiscussion>The library search path environment variable(s) contain a list of directories for the dynamic linker to search to find librar...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
The local initialization file lists of preloaded libraries must contain only absolute paths on AIX.
<VulnDiscussion>The library preload list environment variable contains a list of libraries for the dynamic linker to load before loading the ...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
AIX package management tool must be used daily to verify system software.
<VulnDiscussion>Verification using the system package management tool can be used to determine that system software has not been tampered wit...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
The AIX DHCP client must not send dynamic DNS updates.
<VulnDiscussion>Dynamic DNS updates transmit unencrypted information about a system including its name and address and should not be used unl...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
AIX must not run any routing protocol daemons unless the system is a router.
<VulnDiscussion>Routing protocol daemons are typically used on routers to exchange network topology information with other routers. If this s...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
AIX must not process ICMP timestamp requests.
<VulnDiscussion>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
<GroupDescription></GroupDescription>Group -
AIX must not respond to ICMPv6 echo requests sent to a broadcast address.
<VulnDiscussion>Responding to broadcast ICMP echo requests facilitates network mapping and provides a vector for amplification attacks.</V...Rule Medium Severity -
SRG-OS-000480-GPOS-00228
<GroupDescription></GroupDescription>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.
<VulnDiscussion>Setting the most restrictive default permissions ensures that when new accounts are created they do not have unnecessary acce...Rule Medium Severity -
SRG-OS-000480-GPOS-00229
<GroupDescription></GroupDescription>Group -
There must be no .rhosts, .shosts, hosts.equiv, or shosts.equiv files on the AIX system.
<VulnDiscussion>Trust files are convenient, but when used in conjunction with the remote login services, they can allow unauthenticated acces...Rule Medium Severity -
SRG-OS-000480-GPOS-00229
<GroupDescription></GroupDescription>Group -
The .rhosts file must not be supported in AIX PAM.
<VulnDiscussion>.rhosts files are used to specify a list of hosts permitted remote access to a particular account without authenticating. The...Rule Medium Severity -
SRG-OS-000480-GPOS-00230
<GroupDescription></GroupDescription>Group -
The AIX root user home directory must not be the root directory (/).
<VulnDiscussion>Changing the root home directory to something other than / and assigning it a 0700 protection makes it more difficult for int...Rule Medium Severity -
SRG-OS-000480-GPOS-00230
<GroupDescription></GroupDescription>Group -
All AIX interactive users must be assigned a home directory in the passwd file and the directory must exist.
<VulnDiscussion>All users must be assigned a home directory in the passwd file. Failure to have a home directory may result in the user being...Rule Medium Severity -
SRG-OS-000105-GPOS-00052
<GroupDescription></GroupDescription>Group -
The AIX operating system must use Multi Factor Authentication.
<VulnDiscussion>To assure accountability and prevent unauthenticated access, privileged and non-privileged users must utilize multifactor aut...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
The AIX operating system must be configured to authenticate using Multi Factor Authentication.
<VulnDiscussion>To assure accountability and prevent unauthenticated access, privileged and non-privileged users must utilize multifactor aut...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
The AIX operating system must be configured to use Multi Factor Authentication for remote connections.
<VulnDiscussion>To assure accountability and prevent unauthenticated access, privileged and non-privileged users must utilize multifactor aut...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
AIX must have the have the PowerSC Multi Factor Authentication Product configured.
<VulnDiscussion>To assure accountability and prevent unauthenticated access, privileged and non-privileged users must utilize multifactor aut...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
The AIX operating system must be configured to use a valid server_ca.pem file.
<VulnDiscussion>To assure accountability and prevent unauthenticated access, privileged and non-privileged users must utilize multifactor aut...Rule Medium Severity -
SRG-OS-000376-GPOS-00161
<GroupDescription></GroupDescription>Group -
The AIX operating system must accept and verify Personal Identity Verification (PIV) credentials.
<VulnDiscussion>The use of PIV credentials facilitates standardization and reduces the risk of unauthorized access. DoD has mandated the use...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
AIX must employ a deny-all, allow-by-exception firewall policy for allowing connections to other systems.
<VulnDiscussion>Failure to restrict network connectivity only to authorized systems permits inbound connections from malicious systems. It al...Rule Medium Severity -
SRG-OS-000342-GPOS-00133
<GroupDescription></GroupDescription>Group -
AIX must be configured so that the audit system takes appropriate action when the audit storage volume is full.
<VulnDiscussion>Taking appropriate action in case of a filled audit storage volume will minimize the possibility of losing audit records.<...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
The AIX /etc/hosts file must be owned by root.
<VulnDiscussion>Unauthorized ownership of the /etc/hosts file can lead to the ability for a malicious actor to redirect traffic to servers of...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
The AIX /etc/hosts file must be group-owned by system.
<VulnDiscussion>Unauthorized group ownership of the /etc/hosts file can lead to the ability for a malicious actor to redirect traffic to serv...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
The AIX /etc/hosts file must have a mode of 0640 or less permissive.
<VulnDiscussion>Unauthorized permissions of the /etc/hosts file can lead to the ability for a malicious actor to redirect traffic to servers ...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
AIX cron and crontab directories must have a mode of 0640 or less permissive.
<VulnDiscussion>Incorrect permissions of the cron or crontab directories could permit unauthorized users the ability to alter cron jobs and r...Rule Medium Severity
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