Title

The SUSE operating system must generate audit records for all uses of the chmod command. (Cat II impact)

Discussion

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. Audit records can be generated from various components within the information system (e.g., module or policy filter). Satisfies: SRG-OS-000037-GPOS-00015, SRG-OS-000062-GPOS-00031, SRG-OS-000392-GPOS-00172, SRG-OS-000462-GPOS-00206, SRG-OS-000471-GPOS-00215

Check Content

Verify the SUSE operating system generates an audit record for all uses of the "chmod" command. Check that the following command call is being audited by performing the following command to check the file system rules in "/etc/audit/audit.rules": # sudo grep -i chmod /etc/audit/audit.rules -a always,exit -F path=/usr/bin/chmod -F perm=x -F auid>=1000 -F auid!=4294967295 -k prim_mod If the command does not return any output or the returned line is commented out, this is a finding.

Fix Text

Configure the SUSE operating system to generate an audit record for all uses of the "chmod" command. Add or update the following rules in the "/etc/audit/rules.d/audit.rules" file: -a always,exit -F path=/usr/bin/chmod -F perm=x -F auid>=1000 -F auid!=4294967295 -k prim_mod The audit daemon must be restarted for the changes to take effect. # sudo systemctl restart auditd.service

Additional Identifiers

Rule ID: SV-217241r958412_rule

Vulnerability ID: V-217241

Group Title: SRG-OS-000037-GPOS-00015

Expert Comments

CCIs tied to check.

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