The Ubuntu operating system must configure audit tools with a mode of 0755 or less permissive.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-238300	UBTU-20-010199	SV-238300r654075_rule		Medium

Description
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. 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

Description

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. 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

STIG	Date
Canonical Ubuntu 20.04 LTS Security Technical Implementation Guide	2022-12-06

Details

Check Text ( C-41510r654073_chk )
Verify the Ubuntu operating system configures the audit tools to have a file permission of 0755 or less to prevent unauthorized access by running the following command: $ stat -c "%n %a" /sbin/auditctl /sbin/aureport /sbin/ausearch /sbin/autrace /sbin/auditd /sbin/audispd /sbin/augenrules /sbin/auditctl 755 /sbin/aureport 755 /sbin/ausearch 755 /sbin/autrace 755 /sbin/auditd 755 /sbin/audispd 755 /sbin/augenrules 755 If any of the audit tools have a mode more permissive than 0755, this is a finding.

Check Text ( C-41510r654073_chk )

Verify the Ubuntu operating system configures the audit tools to have a file permission of 0755 or less to prevent unauthorized access by running the following command:

$ stat -c "%n %a" /sbin/auditctl /sbin/aureport /sbin/ausearch /sbin/autrace /sbin/auditd /sbin/audispd /sbin/augenrules

/sbin/auditctl 755
/sbin/aureport 755
/sbin/ausearch 755
/sbin/autrace 755
/sbin/auditd 755
/sbin/audispd 755
/sbin/augenrules 755

If any of the audit tools have a mode more permissive than 0755, this is a finding.

Fix Text (F-41469r654074_fix)
Configure the audit tools on the Ubuntu operating system to be protected from unauthorized access by setting the correct permissive mode using the following command: $ sudo chmod 0755 [audit_tool] Replace "[audit_tool]" with the audit tool that does not have the correct permissions.