Oracle Linux 8 Security Technical Implementation Guide
Rules, Groups, and Values defined within the XCCDF Benchmark
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SRG-OS-000206-GPOS-00084
<GroupDescription></GroupDescription>Group -
The OL 8 "/var/log" directory must be group-owned by root.
<VulnDiscussion>Only authorized personnel should be aware of errors and the details of the errors. Error messages are an indicator of an orga...Rule Medium Severity -
SRG-OS-000250-GPOS-00093
<GroupDescription></GroupDescription>Group -
OL 8 must disable virtual syscalls.
<VulnDiscussion>Syscalls are special routines in the Linux kernel, which userspace applications ask to do privileged tasks. Invoking a system...Rule Medium Severity -
SRG-OS-000134-GPOS-00068
<GroupDescription></GroupDescription>Group -
OL 8 must clear SLUB/SLAB objects to prevent use-after-free attacks.
<VulnDiscussion>Some adversaries launch attacks with the intent of executing code in non-executable regions of memory or in memory locations ...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
OL 8 must not let Meltdown and Spectre exploit critical vulnerabilities in modern processors.
<VulnDiscussion>Hardware vulnerabilities allow programs to steal data that is currently processed on the computer. While programs are typical...Rule Medium Severity -
SRG-OS-000433-GPOS-00193
<GroupDescription></GroupDescription>Group -
OL 8 must be able to initiate directly a session lock for all connection types using smartcard when the smartcard is removed.
<VulnDiscussion>A session lock is a temporary action taken when a user stops work and moves away from the immediate physical vicinity of the ...Rule Medium Severity -
SRG-OS-000029-GPOS-00010
<GroupDescription></GroupDescription>Group -
OL 8 must automatically lock graphical user sessions after 15 minutes of inactivity.
<VulnDiscussion>A session time-out lock is a temporary action taken when a user stops work and moves away from the immediate physical vicinit...Rule Medium Severity -
SRG-OS-000029-GPOS-00010
<GroupDescription></GroupDescription>Group -
OL 8 must automatically lock command line user sessions after 15 minutes of inactivity.
<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-000029-GPOS-00010
<GroupDescription></GroupDescription>Group -
OL 8 must prevent a user from overriding the session lock-delay setting for the graphical user interface.
<VulnDiscussion>A session time-out lock is a temporary action taken when a user stops work and moves away from the immediate physical vicinit...Rule Medium Severity -
SRG-OS-000029-GPOS-00010
<GroupDescription></GroupDescription>Group -
OL 8 must prevent a user from overriding the session idle-delay setting for the graphical user interface.
<VulnDiscussion>A session time-out lock is a temporary action taken when a user stops work and moves away from the immediate physical vicinit...Rule Medium Severity -
SRG-OS-000029-GPOS-00010
<GroupDescription></GroupDescription>Group -
OL 8 must prevent a user from overriding the session lock-enabled setting for the graphical user interface.
<VulnDiscussion>A session time-out lock is a temporary action taken when a user stops work and moves away from the immediate physical vicinit...Rule Medium Severity -
SRG-OS-000068-GPOS-00036
<GroupDescription></GroupDescription>Group -
OL 8 must map the authenticated identity to the user or group account for PKI-based authentication.
<VulnDiscussion>Without mapping the certificate used to authenticate to the user account, the ability to determine the identity of the indivi...Rule Medium Severity -
SRG-OS-000069-GPOS-00037
<GroupDescription></GroupDescription>Group -
OL 8 must ensure the password complexity module is enabled in the password-auth file.
<VulnDiscussion>Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, ...Rule Medium Severity -
SRG-OS-000069-GPOS-00037
<GroupDescription></GroupDescription>Group -
OL 8 must enforce password complexity by requiring that at least one uppercase character be used.
<VulnDiscussion>Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, ...Rule Low Severity -
SRG-OS-000070-GPOS-00038
<GroupDescription></GroupDescription>Group -
OL 8 must enforce password complexity by requiring that at least one lowercase character be used.
<VulnDiscussion>Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, ...Rule Low Severity -
SRG-OS-000071-GPOS-00039
<GroupDescription></GroupDescription>Group -
OL 8 must enforce password complexity by requiring that at least one numeric character be used.
<VulnDiscussion>Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, ...Rule Low Severity -
SRG-OS-000072-GPOS-00040
<GroupDescription></GroupDescription>Group -
OL 8 must require the maximum number of repeating characters of the same character class be limited to four when passwords are changed.
<VulnDiscussion>Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, ...Rule Medium Severity -
SRG-OS-000072-GPOS-00040
<GroupDescription></GroupDescription>Group -
OL 8 must require the maximum number of repeating characters be limited to three when passwords are changed.
<VulnDiscussion>Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, ...Rule Medium Severity -
SRG-OS-000072-GPOS-00040
<GroupDescription></GroupDescription>Group -
OL 8 must require the change of at least four character classes when passwords are changed.
<VulnDiscussion>Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, ...Rule Medium Severity -
SRG-OS-000072-GPOS-00040
<GroupDescription></GroupDescription>Group -
OL 8 must require the change of at least 8 characters when passwords are changed.
<VulnDiscussion>Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, ...Rule Low Severity -
SRG-OS-000075-GPOS-00043
<GroupDescription></GroupDescription>Group -
OL 8 passwords for new users or password changes must have a 24 hours/1 day minimum password lifetime restriction in "/etc/shadow".
<VulnDiscussion>Enforcing a minimum password lifetime helps to prevent repeated password changes to defeat the password reuse or history enfo...Rule Medium Severity -
SRG-OS-000075-GPOS-00043
<GroupDescription></GroupDescription>Group -
OL 8 passwords for new users or password changes must have a 24 hours/1 day minimum password lifetime restriction in "/etc/login.defs".
<VulnDiscussion>Enforcing a minimum password lifetime helps to prevent repeated password changes to defeat the password reuse or history enfo...Rule Medium Severity -
SRG-OS-000076-GPOS-00044
<GroupDescription></GroupDescription>Group -
OL 8 user account passwords must have a 60-day maximum password lifetime restriction.
<VulnDiscussion>Any password, no matter how complex, can eventually be cracked. Therefore, passwords need to be changed periodically. If OL 8...Rule Medium Severity -
SRG-OS-000076-GPOS-00044
<GroupDescription></GroupDescription>Group -
OL 8 user account passwords must be configured so that existing passwords are restricted to a 60-day maximum lifetime.
<VulnDiscussion>Any password, no matter how complex, can eventually be cracked. Therefore, passwords need to be changed periodically. If OL 8...Rule Medium Severity -
SRG-OS-000077-GPOS-00045
<GroupDescription></GroupDescription>Group -
OL 8 must be configured in the password-auth file to prohibit password reuse for a minimum of five generations.
<VulnDiscussion>Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute...Rule Low Severity -
SRG-OS-000078-GPOS-00046
<GroupDescription></GroupDescription>Group -
OL 8 passwords must have a minimum of 15 characters.
<VulnDiscussion>Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute...Rule Medium Severity
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