Audit tools must be group-owned by root.

From Canonical Ubuntu 16.04 Security Technical Implementation Guide

Associated with: CCI-001493 CCI-001494 CCI-001495

SV-90337r2_rule Audit tools must be group-owned by root.

Vulnerability discussion

Protecting audit information also includes identifying and protecting the tools used to view and manipulate log data. Therefore, protecting audit tools is necessary to prevent unauthorized operation on audit information.Ubuntu operating systems providing tools to interface with audit information will leverage user permissions and roles identifying the user accessing the tools and the corresponding rights the user enjoys in order to make access decisions regarding the access to audit tools.Audit tools include, but are not limited to, vendor-provided and open source audit tools needed to successfully view and manipulate audit information system activity and records. Audit tools include custom queries and report generators.Satisfies: SRG-OS-000256-GPOS-00097, SRG-OS-000257-GPOS-00098, SRG-OS-000258-GPOS-00099

Check content

Verify the audit tools are group-owned by "root" to prevent any unauthorized access, deletion, or modification. Check the owner of each audit tool by running the following commands: # ls -la /sbin/auditctl /sbin/aureport /sbin/ausearch /sbin/autrace /sbin/auditd /sbin/audispd /sbin/augenrules -rwxr-xr-x 1 root root 97128 Jan 18 2016 /sbin/augenrules If any of the audit tools are not group-owned by "root", this is a finding.

Fix text

Configure the audit tools to be group-owned by "root", by running the following command: # sudo chgrp root [audit_tool] Replace "[audit_tool]" with each audit tool not group-owned by "root".

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