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

From VMware vRealize Automation 7.x SLES Security Technical Implementation Guide

Part of SRG-OS-000476-GPOS-00221

Associated with: CCI-000172

SV-100507r1_rule The SLES for vRealize must generate audit records for all account creations, modifications, disabling, and termination events.

Vulnerability discussion

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).

Check content

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

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

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