II - Mission Support Classified
Rules and Groups employed by this XCCDF Profile
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SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
All TOSS local interactive user home directories must be group-owned by the home directory owner's primary group.
<VulnDiscussion>If the Group Identifier (GID) of a local interactive user's home directory is not the same as the primary GID of the user, th...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
All TOSS local interactive users must have a home directory assigned in the /etc/passwd file.
<VulnDiscussion>If local interactive users are not assigned a valid home directory, there is no place for the storage and control of files th...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
The x86 Ctrl-Alt-Delete key sequence in TOSS must be disabled if a graphical user interface is installed.
<VulnDiscussion>A locally logged-on user, who presses Ctrl-Alt-Delete when at the console, can reboot the system. If accidentally pressed, as...Rule High Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
TOSS must disable the user list at logon for graphical user interfaces.
<VulnDiscussion>Leaving the user list enabled is a security risk since it allows anyone with physical access to the system to enumerate known...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
TOSS must display the date and time of the last successful account logon upon an SSH logon.
<VulnDiscussion>Providing users with feedback on when account accesses via SSH last occurred facilitates user recognition and reporting of un...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
TOSS must not allow accounts configured with blank or null passwords.
<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 -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
TOSS must not have unnecessary accounts.
<VulnDiscussion>Accounts providing no operational purpose provide additional opportunities for system compromise. Unnecessary accounts includ...Rule Medium Severity -
SRG-OS-000480-GPOS-00228
<GroupDescription></GroupDescription>Group -
TOSS 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 acc...Rule Medium Severity -
SRG-OS-000480-GPOS-00230
<GroupDescription></GroupDescription>Group -
All TOSS local interactive user home directories must have mode 0770 or less permissive.
<VulnDiscussion>Users' home directories/folders may contain information of a sensitive nature. Non-privileged users should coordinate any sha...Rule Medium Severity -
SRG-OS-000480-GPOS-00230
<GroupDescription></GroupDescription>Group -
All TOSS local interactive user home directories must be owned by root.
<VulnDiscussion>Users' home directories/folders may contain information of a sensitive nature. Non-privileged users should coordinate any sha...Rule Medium Severity
Node 2
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