The Photon operating system must audit all account creations.

Severity	Group ID	Group Title	Version	Rule ID	Date	STIG Version
medium	V-258801	SRG-OS-000004-GPOS-00004	PHTN-40-000003	SV-258801r958368_rule	2024-07-11	2

Description
Once an attacker establishes access to a system, the attacker often attempts to create a persistent method of reestablishing access. One way to accomplish this is for the attacker to create an account. Auditing account creation actions provides logging that can be used for forensic purposes. Satisfies: SRG-OS-000004-GPOS-00004, SRG-OS-000476-GPOS-00221

ℹ️ Check
At the command line, run the following command to verify an audit rule exists to audit account creations: # auditctl -l \| grep -E "(useradd\|groupadd)" Example result: -w /usr/sbin/useradd -p x -k useradd -w /usr/sbin/groupadd -p x -k groupadd If either "useradd" or "groupadd" are not listed with a permissions filter of at least "x", this is a finding. Note: This check depends on the "auditd" service to be in a running state for accurate results. The "auditd" service is enabled in control PHTN-40-000016.

ℹ️ Check

At the command line, run the following command to verify an audit rule exists to audit account creations: # auditctl -l | grep -E "(useradd|groupadd)" Example result: -w /usr/sbin/useradd -p x -k useradd -w /usr/sbin/groupadd -p x -k groupadd If either "useradd" or "groupadd" are not listed with a permissions filter of at least "x", this is a finding. Note: This check depends on the "auditd" service to be in a running state for accurate results. The "auditd" service is enabled in control PHTN-40-000016.

✔️ Fix
Navigate to and open: /etc/audit/rules.d/audit.STIG.rules Add or update the following lines: -w /usr/sbin/useradd -p x -k useradd -w /usr/sbin/groupadd -p x -k groupadd At the command line, run the following command to load the new audit rules: # /sbin/augenrules --load Note: An "audit.STIG.rules" file is provided with this guidance for placement in "/etc/audit/rules.d" that contains all rules needed for auditd. Note: An older "audit.STIG.rules" may exist and may reference older "GEN" SRG IDs. This file can be removed and replaced as necessary with an updated one.

✔️ Fix

Navigate to and open: /etc/audit/rules.d/audit.STIG.rules Add or update the following lines: -w /usr/sbin/useradd -p x -k useradd -w /usr/sbin/groupadd -p x -k groupadd At the command line, run the following command to load the new audit rules: # /sbin/augenrules --load Note: An "audit.STIG.rules" file is provided with this guidance for placement in "/etc/audit/rules.d" that contains all rules needed for auditd. Note: An older "audit.STIG.rules" may exist and may reference older "GEN" SRG IDs. This file can be removed and replaced as necessary with an updated one.