SLES-12-020220 - The SUSE operating system must generate audit records for all account creations, modifications, disabling, and termination events that affect /etc/shadow.

Information

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 create a new account. Auditing of account creation mitigates this risk.

To address access requirements, many SUSE operating systems may be integrated with enterprise-level authentication/access/auditing mechanisms that meet or exceed access control policy requirements.

Satisfies: SRG-OS-000004-GPOS-00004, SRG-OS-000239-GPOS-00089, SRG-OS-000240-GPOS-00090, SRG-OS-000241-GPOS-00091, SRG-OS-000303-GPOS-00120, SRG-OS-000476-GPOS-00221

Solution

Configure the SUSE operating system to generate an audit record when all modifications to the '/etc/shadow' file occur.

Add or update the following rule to '/etc/audit/rules.d/audit.rules':

-w /etc/shadow -p wa -k account_mod

The audit daemon must be restarted for any changes to take effect.

# sudo systemctl restart auditd.service

Item Details

Audit Name: DISA SLES 12 STIG v3r4

Category: ACCESS CONTROL, AUDIT AND ACCOUNTABILITY

Plugin: Unix

Control ID: af919d0aa6f37583046f14e244bde85a054f914aed1962ddb0757ae6ee3c31f5

Detections

Analytics

SLES-12-020220 - The SUSE operating system must generate audit records for all account creations, modifications, disabling, and termination events that affect /etc/shadow.

Information

Solution

See Also

Item Details