The SLES for vRealize must audit all account modifications.

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

Associated with: CCI-001403

SV-100391r1_rule The SLES for vRealize must audit all account modifications.

Vulnerability discussion

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.

Check content

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

Configure execute auditing of the usermod and groupmod executables run the dodscript with the following command as root: # /etc/dodscript.sh OR.... 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

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