The SLES for vRealize must generate audit records for all account creations, modifications, disabling, and termination events.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-240540	VRAU-SL-001480	SV-240540r671361_rule		Medium

Description
Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit records can be generated from various components within the information system (e.g., module or policy filter).

STIG	Date
VMware vRealize Automation 7.x SLES Security Technical Implementation Guide	2021-06-24

Details

Check Text ( C-43773r671359_chk )
Determine if execution of the "usermod" and "groupmod" executable are audited: # auditctl -l \| egrep '(usermod\|groupmod)' If either "usermod" or "groupmod" are not listed with a permissions filter of at least "x", this is a finding. Determine if execution of the "userdel" and "groupdel" executable are audited: # auditctl -l \| egrep '(userdel\|groupdel)' If either "userdel" or "groupdel" are not listed with a permissions filter of at least "x", this is a finding. Determine if execution of "useradd" and "groupadd" are audited: # auditctl -l \| egrep '(useradd\|groupadd)' If either "useradd" or "groupadd" are not listed with a permissions filter of at least "x", this is a finding. Determine if execution of the "passwd" executable is audited: # auditctl -l \| grep “/usr/bin/passwd” If "/usr/bin/passwd" is not listed with a permissions filter of at least "x", this is a finding. Determine if /etc/passwd, /etc/shadow, /etc/group, and /etc/security/opasswd are audited for writing: # auditctl -l \| egrep '(/etc/passwd\|/etc/shadow\|/etc/group\|/etc/security/opasswd)' If any of these are not listed with a permissions filter of at least "w", this is a finding.

Check Text ( C-43773r671359_chk )

Determine if execution of the "usermod" and "groupmod" executable are audited:

# auditctl -l | egrep '(usermod|groupmod)'

If either "usermod" or "groupmod" are not listed with a permissions filter of at least "x", this is a finding.

Determine if execution of the "userdel" and "groupdel" executable are audited:

# auditctl -l | egrep '(userdel|groupdel)'

If either "userdel" or "groupdel" are not listed with a permissions filter of at least "x", this is a finding.

Determine if execution of "useradd" and "groupadd" are audited:

# auditctl -l | egrep '(useradd|groupadd)'

If either "useradd" or "groupadd" are not listed with a permissions filter of at least "x", this is a finding.

Determine if execution of the "passwd" executable is audited:

# auditctl -l | grep “/usr/bin/passwd”

If "/usr/bin/passwd" is not listed with a permissions filter of at least "x", this is a finding.

Determine if /etc/passwd, /etc/shadow, /etc/group, and /etc/security/opasswd are audited for writing:

# auditctl -l | egrep '(/etc/passwd|/etc/shadow|/etc/group|/etc/security/opasswd)'

If any of these are not listed with a permissions filter of at least "w", this is a finding.

Fix Text (F-43732r671360_fix)
Configure "execute" auditing of the "usermod" and "groupmod" executables. Add the following to the /etc/audit/audit.rules file: -w /usr/sbin/usermod -p x -k usermod -w /usr/sbin/groupmod -p x -k groupmod Configure "execute" auditing of the "userdel" and "groupdel" executables. Add the following to the /etc/audit/audit.rules file: -w /usr/sbin/userdel -p x -k userdel -w /usr/sbin/groupdel -p x -k groupdel Configure "execute" auditing of the "useradd" and "groupadd" executables. Add the following to audit.rules: -w /usr/sbin/useradd -p x -k useradd -w /usr/sbin/groupadd -p x -k groupadd Configure "execute" auditing of the "passwd" executable. Add the following to the aud.rules: -w /usr/bin/passwd -p x -k passwd Configure "write" auditing of the "passwd", "shadow", "group", and "opasswd" files. Add the following to the /etc/audit/audit.rules file: -w /etc/passwd -p wa -k passwd -w /etc/shadow -p wa -k shadow -w /etc/group -p wa -k group -w /etc/security/opasswd -p wa -k opasswd Restart the auditd service: # service auditd restart OR # /etc/dodscript.sh

Fix Text (F-43732r671360_fix)

Configure "execute" auditing of the "usermod" and "groupmod" executables. Add the following to the /etc/audit/audit.rules file:

-w /usr/sbin/usermod -p x -k usermod
-w /usr/sbin/groupmod -p x -k groupmod

Configure "execute" auditing of the "userdel" and "groupdel" executables. Add the following to the /etc/audit/audit.rules file:

-w /usr/sbin/userdel -p x -k userdel
-w /usr/sbin/groupdel -p x -k groupdel

Configure "execute" auditing of the "useradd" and "groupadd" executables. Add the following to audit.rules:

-w /usr/sbin/useradd -p x -k useradd
-w /usr/sbin/groupadd -p x -k groupadd

Configure "execute" auditing of the "passwd" executable. Add the following to the aud.rules:

-w /usr/bin/passwd -p x -k passwd

Configure "write" auditing of the "passwd", "shadow", "group", and "opasswd" files. Add the following to the /etc/audit/audit.rules file:

-w /etc/passwd -p wa -k passwd
-w /etc/shadow -p wa -k shadow
-w /etc/group -p wa -k group
-w /etc/security/opasswd -p wa -k opasswd

Restart the auditd service:

# service auditd restart

OR

# /etc/dodscript.sh