From VMware vRealize Operations Manager 6.x SLES Security Technical Implementation Guide
Part of SRG-OS-000476-GPOS-00221
Associated with: CCI-000172
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.
Determine if execution of the "usermod" and "groupmod" executable are audited: # auditctl -l | egrep '(usermod|groupmod)' 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 "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.
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 audit.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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