Guide to the Secure Configuration of Ubuntu 22.04
Rules, Groups, and Values defined within the XCCDF Benchmark
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Record Events that Modify the System's Discretionary Access Controls - fremovexattr
At a minimum, the audit system should collect file permission changes for all users and root. <br> <br> If the <code>auditd</code> daemon is configured to use the <code>augenrules</code> pr...Rule Medium Severity -
Record Events that Modify the System's Discretionary Access Controls - fsetxattr
At a minimum, the audit system should collect file permission changes for all users and root. If the <code>auditd</code> daemon is configured to use the <code>augenrules</code> program to read audi...Rule Medium Severity -
Record Events that Modify the System's Discretionary Access Controls - lchown
At a minimum, the audit system should collect file permission changes for all users and root. If the <code>auditd</code> daemon is configured to use the <code>augenrules</code> program to read audi...Rule Medium Severity -
Record Events that Modify the System's Discretionary Access Controls - lremovexattr
At a minimum, the audit system should collect file permission changes for all users and root. <br> <br> If the <code>auditd</code> daemon is configured to use the <code>augenrules</code> pr...Rule Medium Severity -
Record Events that Modify the System's Discretionary Access Controls - removexattr
At a minimum, the audit system should collect file permission changes for all users and root. <br> <br> If the <code>auditd</code> daemon is configured to use the <code>augenrules</code> pr...Rule Medium Severity -
Record Events that Modify the System's Discretionary Access Controls - umount
At a minimum, the audit system should collect file system umount changes. If the <code>auditd</code> daemon is configured to use the <code>augenrules</code> program to read audit rules during daemo...Rule Medium Severity -
Record Events that Modify the System's Discretionary Access Controls - umount2
At a minimum, the audit system should collect file system umount2 changes. If the <code>auditd</code> daemon is configured to use the <code>augenrules</code> program to read audit rules during daem...Rule Medium Severity -
Record Any Attempts to Run setfacl
At a minimum, the audit system should collect any execution attempt of the <code>setfacl</code> command for all users and root. If the <code>auditd</code> daemon is configured to use the <code>auge...Rule Medium Severity -
Ensure auditd Collects File Deletion Events by User - rename
At a minimum, the audit system should collect file deletion events for all users and root. If the <code>auditd</code> daemon is configured to use the <code>augenrules</code> program to read audit r...Rule Medium Severity -
Ensure auditd Collects File Deletion Events by User - renameat
At a minimum, the audit system should collect file deletion events for all users and root. If the <code>auditd</code> daemon is configured to use the <code>augenrules</code> program to read audit r...Rule Medium Severity -
Ensure auditd Collects File Deletion Events by User - unlink
At a minimum, the audit system should collect file deletion events for all users and root. If the <code>auditd</code> daemon is configured to use the <code>augenrules</code> program to read audit r...Rule Medium Severity -
Ensure auditd Collects File Deletion Events by User - unlinkat
At a minimum, the audit system should collect file deletion events for all users and root. If the <code>auditd</code> daemon is configured to use the <code>augenrules</code> program to read audit r...Rule Medium Severity -
Record Unsuccessful Access Attempts to Files - ftruncate
At a minimum, the audit system should collect unauthorized file accesses for all users and root. If the <code>auditd</code> daemon is configured to use the <code>augenrules</code> program to read a...Rule Medium Severity -
Record Unsuccessful Access Attempts to Files - open_by_handle_at
At a minimum, the audit system should collect unauthorized file accesses for all users and root. If the <code>auditd</code> daemon is configured to use the <code>augenrules</code> program to read a...Rule Medium Severity -
Record Unsuccessful Access Attempts to Files - truncate
At a minimum, the audit system should collect unauthorized file accesses for all users and root. If the <code>auditd</code> daemon is configured to use the <code>augenrules</code> program to read a...Rule Medium Severity -
Ensure auditd Collects Information on the Use of Privileged Commands - init
At a minimum, the audit system should collect the execution of privileged commands for all users and root. If the <code>auditd</code> daemon is configured to use the <code>augenrules</code> program...Rule Medium Severity -
Ensure auditd Collects Information on Kernel Module Loading - init_module
To capture kernel module loading events, use following line, setting ARCH to either b32 for 32-bit system, or having two lines for both b32 and b64 in case your system is 64-bit: <pre>-a always,ex...Rule Medium Severity -
Ensure auditd Collects Information on Kernel Module Unloading - delete_module
To capture kernel module unloading events, use following line, setting ARCH to either b32 for 32-bit system, or having two lines for both b32 and b64 in case your system is 64-bit: <pre>-a always,...Rule Medium Severity -
Record Attempts to Alter Logon and Logout Events - faillog
The audit system already collects login information for all users and root. If the <code>auditd</code> daemon is configured to use the <code>augenrules</code> program to read audit rules during dae...Rule Medium Severity -
Ensure auditd Collects Information on the Use of Privileged Commands - reboot
At a minimum, the audit system should collect the execution of privileged commands for all users and root. If the <code>auditd</code> daemon is configured to use the <code>augenrules</code> program...Rule Medium Severity -
Ensure auditd Collects Information on the Use of Privileged Commands - shutdown
At a minimum, the audit system should collect the execution of privileged commands for all users and root. If the <code>auditd</code> daemon is configured to use the <code>augenrules</code> program...Rule Medium Severity -
Record Any Attempts to Run apparmor_parser
At a minimum, the audit system should collect any execution attempt of the <code>apparmor_parser</code> command for all users and root. If the <code>auditd</code> daemon is configured to use the <c...Rule Medium Severity -
Ensure auditd Collects Information on the Use of Privileged Commands - rmmod
At a minimum, the audit system should collect the execution of privileged commands for all users and root. If the <code>auditd</code> daemon is configured to use the <code>augenrules</code> program...Rule Medium Severity -
Ensure auditd Collects Information on the Use of Privileged Commands - chage
At a minimum, the audit system should collect the execution of privileged commands for all users and root. If the <code>auditd</code> daemon is configured to use the <code>augenrules</code> program...Rule Medium Severity -
Ensure auditd Collects Information on the Use of Privileged Commands - chfn
At a minimum, the audit system should collect the execution of privileged commands for all users and root. If the <code>auditd</code> daemon is configured to use the <code>augenrules</code> program...Rule Medium Severity -
Ensure auditd Collects Information on the Use of Privileged Commands - chsh
At a minimum, the audit system should collect the execution of privileged commands for all users and root. If the <code>auditd</code> daemon is configured to use the <code>augenrules</code> program...Rule Medium Severity -
Record Any Attempts to Run ssh-agent
At a minimum, the audit system should collect any execution attempt of the <code>ssh-agent</code> command for all users and root. If the <code>auditd</code> daemon is configured to use the <code>au...Rule Medium Severity -
Ensure auditd Collects Information on the Use of Privileged Commands - fdisk
Configure the operating system to audit the execution of the partition management program "fdisk".Rule Medium Severity -
Ensure auditd Collects Information on the Use of Privileged Commands - gpasswd
At a minimum, the audit system should collect the execution of privileged commands for all users and root. If the <code>auditd</code> daemon is configured to use the <code>augenrules</code> program...Rule Medium Severity -
Ensure auditd Collects Information on the Use of Privileged Commands - insmod
At a minimum, the audit system should collect the execution of privileged commands for all users and root. If the <code>auditd</code> daemon is configured to use the <code>augenrules</code> program...Rule Medium Severity -
Ensure auditd Collects Information on the Use of Privileged Commands - modprobe
At a minimum, the audit system should collect the execution of privileged commands for all users and root. If the <code>auditd</code> daemon is configured to use the <code>augenrules</code> program...Rule Medium Severity -
Enable auditd Service
The <code>auditd</code> service is an essential userspace component of the Linux Auditing System, as it is responsible for writing audit records to disk. The <code>auditd</code> service can be ena...Rule Medium Severity -
Ensure auditd Collects Information on the Use of Privileged Commands - newgidmap
At a minimum, the audit system should collect the execution of privileged commands for all users and root. If the <code>auditd</code> daemon is configured to use the <code>augenrules</code> program...Rule Medium Severity -
Ensure auditd Collects Information on the Use of Privileged Commands - newgrp
At a minimum, the audit system should collect the execution of privileged commands for all users and root. If the <code>auditd</code> daemon is configured to use the <code>augenrules</code> program...Rule Medium Severity -
Configure auditd space_left Action on Low Disk Space
The <code>auditd</code> service can be configured to take an action when disk space <i>starts</i> to run low. Edit the file <code>/etc/audit/auditd.conf</code>. Modify the following line, substitut...Rule Medium Severity -
Ensure auditd Collects Information on the Use of Privileged Commands - passwd
At a minimum, the audit system should collect the execution of privileged commands for all users and root. If the <code>auditd</code> daemon is configured to use the <code>augenrules</code> program...Rule Medium Severity -
Ensure auditd Collects Information on the Use of Privileged Commands - postdrop
At a minimum, the audit system should collect the execution of privileged commands for all users and root. If the <code>auditd</code> daemon is configured to use the <code>augenrules</code> program...Rule Medium Severity -
Ensure auditd Collects Information on the Use of Privileged Commands - postqueue
At a minimum, the audit system should collect the execution of privileged commands for all users and root. If the <code>auditd</code> daemon is configured to use the <code>augenrules</code> program...Rule Medium Severity -
Set number of records to cause an explicit flush to audit logs
To configure Audit daemon to issue an explicit flush to disk command after writing <xccdf-1.2:sub idref="xccdf_org.ssgproject.content_value_var_auditd_freq" use="legacy"></xccdf-1.2:sub> records, s...Rule Medium Severity -
Ensure auditd Collects Information on the Use of Privileged Commands - sudoedit
At a minimum, the audit system should collect the execution of privileged commands for all users and root. If the <code>auditd</code> daemon is configured to use the <code>augenrules</code> program...Rule Medium Severity -
Record Attempts to Alter the localtime File
If the <code>auditd</code> daemon is configured to use the <code>augenrules</code> program to read audit rules during daemon startup (the default), add the following line to a file with suffix <cod...Rule Medium Severity -
Ensure auditd Collects Information on the Use of Privileged Commands - unix_update
At a minimum, the audit system should collect the execution of privileged commands for all users and root. If the <code>auditd</code> daemon is configured to use the <code>augenrules</code> program...Rule Medium Severity -
Record Attempts to Alter Time Through stime
If the <code>auditd</code> daemon is configured to use the <code>augenrules</code> program to read audit rules during daemon startup (the default), add the following line to a file with suffix <cod...Rule Medium Severity -
Record attempts to alter time through adjtimex
If the <code>auditd</code> daemon is configured to use the <code>augenrules</code> program to read audit rules during daemon startup (the default), add the following line to a file with suffix <cod...Rule Medium Severity -
Record Attempts to Alter Time Through clock_settime
If the <code>auditd</code> daemon is configured to use the <code>augenrules</code> program to read audit rules during daemon startup (the default), add the following line to a file with suffix <cod...Rule Medium Severity -
Record attempts to alter time through settimeofday
If the <code>auditd</code> daemon is configured to use the <code>augenrules</code> program to read audit rules during daemon startup (the default), add the following line to a file with suffix <cod...Rule Medium Severity -
The percentage remaining in disk space before prompting admin_space_left_action
The setting for admin_space_left as a percentage in /etc/audit/auditd.confValue -
Action for auditd to take when disk errors
'The setting for disk_error_action in /etc/audit/auditd.conf, if multiple values are allowed write them separated by pipes as in "syslog|single|halt", for remediations the first value will be taken'Value -
Number of Record to Retain Before Flushing to Disk
The setting for freq in /etc/audit/auditd.confValue -
Configure auditd to use audispd's syslog plugin
To configure the <code>auditd</code> service to use the <code>syslog</code> plug-in of the <code>audispd</code> audit event multiplexor, set the <code>active</code> line in <code>/etc/audit/plugins...Rule Medium Severity
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