III - Administrative Sensitive
Rules and Groups employed by this XCCDF Profile
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SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
RHEL 9 must not have unauthorized accounts.
<VulnDiscussion>Accounts providing no operational purpose provide additional opportunities for system compromise. Unnecessary accounts includ...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
The root account must be the only account having unrestricted access to RHEL 9 system.
<VulnDiscussion>An account has root authority if it has a user identifier (UID) of "0". Multiple accounts with a UID of "0" afford more oppor...Rule High Severity -
SRG-OS-000021-GPOS-00005
<GroupDescription></GroupDescription>Group -
RHEL 9 must ensure account lockouts persist.
<VulnDiscussion>Having lockouts persist across reboots ensures that account is only unlocked by an administrator. If the lockouts did not per...Rule Medium Severity -
SRG-OS-000104-GPOS-00051
<GroupDescription></GroupDescription>Group -
RHEL 9 groups must have unique Group ID (GID).
<VulnDiscussion>To ensure accountability and prevent unauthenticated access, groups must be identified uniquely to prevent potential misuse a...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
Local RHEL 9 initialization files must not execute world-writable programs.
<VulnDiscussion>If user start-up files execute world-writable programs, especially in unprotected directories, they could be maliciously modi...Rule Medium Severity -
SRG-OS-000163-GPOS-00072
<GroupDescription></GroupDescription>Group -
RHEL 9 must automatically exit interactive command shell user sessions after 15 minutes of inactivity.
<VulnDiscussion>Terminating an idle interactive command shell user session within a short time period reduces the window of opportunity for u...Rule Medium Severity -
SRG-OS-000027-GPOS-00008
<GroupDescription></GroupDescription>Group -
RHEL 9 must limit the number of concurrent sessions to ten for all accounts and/or account types.
<VulnDiscussion>Operating system management includes the ability to control the number of users and user sessions that utilize an operating s...Rule Low Severity -
SRG-OS-000021-GPOS-00005
<GroupDescription></GroupDescription>Group -
RHEL 9 must log username information when unsuccessful logon attempts occur.
<VulnDiscussion>Without auditing of these events, it may be harder or impossible to identify what an attacker did after an attack.</VulnDi...Rule Medium Severity -
SRG-OS-000480-GPOS-00226
<GroupDescription></GroupDescription>Group -
RHEL 9 must enforce a delay of at least four seconds between logon prompts following a failed logon attempt.
<VulnDiscussion>Increasing the time between a failed authentication attempt and reprompting to enter credentials helps to slow a single-threa...Rule Medium Severity -
SRG-OS-000480-GPOS-00228
<GroupDescription></GroupDescription>Group -
RHEL 9 must define default permissions for the bash shell.
<VulnDiscussion>The umask controls the default access mode assigned to newly created files. A umask of 077 limits new files to mode 600 or le...Rule Medium Severity -
SRG-OS-000480-GPOS-00228
<GroupDescription></GroupDescription>Group -
RHEL 9 must define default permissions for the c shell.
<VulnDiscussion>The umask controls the default access mode assigned to newly created files. A umask of 077 limits new files to mode 600 or le...Rule Medium Severity -
SRG-OS-000480-GPOS-00228
<GroupDescription></GroupDescription>Group -
RHEL 9 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-00228
<GroupDescription></GroupDescription>Group -
RHEL 9 must define default permissions for the system default profile.
<VulnDiscussion>The umask controls the default access mode assigned to newly created files. A umask of 077 limits new files to mode 600 or le...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
RHEL 9 must display the date and time of the last successful account logon upon logon.
<VulnDiscussion>Users need to be aware of activity that occurs regarding their account. Providing users with information regarding the number...Rule Low Severity -
SRG-OS-000163-GPOS-00072
<GroupDescription></GroupDescription>Group -
RHEL 9 must terminate idle user sessions.
<VulnDiscussion>Terminating an idle session within a short time period reduces the window of opportunity for unauthorized personnel to take c...Rule Medium Severity -
SRG-OS-000445-GPOS-00199
<GroupDescription></GroupDescription>Group -
RHEL 9 must use a Linux Security Module configured to enforce limits on system services.
<VulnDiscussion>Without verification of the security functions, security functions may not operate correctly and the failure may go unnoticed...Rule High Severity -
SRG-OS-000445-GPOS-00199
<GroupDescription></GroupDescription>Group -
RHEL 9 must enable the SELinux targeted policy.
<VulnDiscussion>Setting the SELinux policy to "targeted" or a more specialized policy ensures the system will confine processes that are like...Rule Medium Severity -
SRG-OS-000021-GPOS-00005
<GroupDescription></GroupDescription>Group -
RHEL 9 must configure SELinux context type to allow the use of a nondefault faillock tally directory.
<VulnDiscussion>Not having the correct SELinux context on the faillock directory may lead to unauthorized access to the directory.</VulnDi...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
RHEL 9 must have policycoreutils package installed.
<VulnDiscussion>Without verification of the security functions, security functions may not operate correctly and the failure may go unnoticed...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
RHEL 9 policycoreutils-python-utils package must be installed.
<VulnDiscussion>The policycoreutils-python-utils package is required to operate and manage an SELinux environment and its policies. It provid...Rule Medium Severity -
SRG-OS-000324-GPOS-00125
<GroupDescription></GroupDescription>Group -
RHEL 9 must have the sudo package installed.
<VulnDiscussion>"sudo" is a program designed to allow a system administrator to give limited root privileges to users and log root activity. ...Rule Medium Severity -
SRG-OS-000373-GPOS-00156
<GroupDescription></GroupDescription>Group -
RHEL 9 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-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
RHEL 9 must use the invoking user's password for privilege escalation when using "sudo".
<VulnDiscussion>If the rootpw, targetpw, or runaspw flags are defined and not disabled, by default the operating system will prompt the invok...Rule Medium Severity -
SRG-OS-000373-GPOS-00156
<GroupDescription></GroupDescription>Group -
RHEL 9 must require users to reauthenticate for privilege escalation.
<VulnDiscussion>Without reauthentication, users may access resources or perform tasks for which they do not have authorization. When operati...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
RHEL 9 must restrict privilege elevation to authorized personnel.
<VulnDiscussion>If the "sudoers" file is not configured correctly, any user defined on the system can initiate privileged actions on the targ...Rule Medium Severity
Node 2
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