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The SLES for vRealize must audit all account modifications.


Finding ID Version Rule ID IA Controls Severity
V-89741 VRAU-SL-000870 SV-100391r1_rule Medium
Once an attacker establishes initial 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 simply modify an existing account. Auditing of account modification is one method for mitigating this risk. To address access requirements, many operating systems can be integrated with enterprise-level authentication/access/auditing mechanisms that meet or exceed access control policy requirements.
VMware vRealize Automation 7.x SLES Security Technical Implementation Guide 2018-10-12


Check Text ( C-89433r2_chk )
Determine if execution of the usermod and groupmod executable are audited.

# auditctl -l | egrep '(usermod|groupmod)' | grep perm=x

If either usermod or groupmod are not listed with a permissions filter of at least 'x', this is a finding.
Fix Text (F-96483r1_fix)
Configure execute auditing of the usermod and groupmod executables run the dodscript with the following command as root:

# /etc/dodscript.sh


Configure execute auditing of the usermod and groupmod executables. Add the following to the audit.rules file:
-w /usr/sbin/usermod -p x -k usermod
-w /usr/sbin/groupmod -p x -k groupmod

Restart the auditd service.
# service auditd restart