I - Mission Critical Public
Rules and Groups employed by this XCCDF Profile
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SRG-OS-000373-GPOS-00158
<GroupDescription></GroupDescription>Group -
TOSS must require reauthentication when using the "sudo" command.
<VulnDiscussion>Without reauthentication, users may access resources or perform tasks for which they do not have authorization. When operat...Rule Medium Severity -
SRG-OS-000375-GPOS-00160
<GroupDescription></GroupDescription>Group -
TOSS must have the packages required for multifactor authentication installed.
<VulnDiscussion>Using an authentication device, such as a DOD Common Access Card (CAC) or token that is separate from the information system,...Rule Medium Severity -
SRG-OS-000383-GPOS-00166
<GroupDescription></GroupDescription>Group -
TOSS must prohibit the use of cached authentications after one day.
<VulnDiscussion>If cached authentication information is out of date, the validity of the authentication information may be questionable. TOS...Rule Medium Severity -
SRG-OS-000423-GPOS-00187
<GroupDescription></GroupDescription>Group -
All TOSS networked systems must have and implement SSH to protect the confidentiality and integrity of transmitted and received information, as well as information during preparation for transmission.
<VulnDiscussion>Without protection of the transmitted information, confidentiality and integrity may be compromised because unprotected commu...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
For TOSS systems using Domain Name Servers (DNS) resolution, at least two name servers must be configured.
<VulnDiscussion>To provide availability for name resolution services, multiple redundant name servers are mandated. A failure in name resolut...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
The debug-shell systemd service must be disabled on TOSS.
<VulnDiscussion>The debug-shell requires no authentication and provides root privileges to anyone who has physical access to the machine. Whi...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
The root account must be the only account having unrestricted access to the TOSS system.
<VulnDiscussion>If an account other than root also has a User Identifier (UID) of "0", it has root authority, giving that account unrestricte...Rule High Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
The systemd Ctrl-Alt-Delete burst key sequence in TOSS must be disabled.
<VulnDiscussion>A locally logged-on user who presses Ctrl-Alt-Delete when at the console can reboot the system. If accidentally pressed, as c...Rule High Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
There must be no ".shosts" files on The TOSS operating system.
<VulnDiscussion>The ."shosts" files are used to configure host-based authentication for individual users or the system via SSH. Host-based au...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
TOSS must not allow blank or null passwords in the system-auth file.
<VulnDiscussion>If an account has an empty password, anyone could log on and run commands with the privileges of that account. Accounts with ...Rule High Severity
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