SLEM 5 must prevent unauthorized users from accessing system error messages.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-261308	SLEM-05-232115	SV-261308r996395_rule		Medium

Description
Only authorized personnel should be aware of errors and the details of the errors. Error messages are an indicator of an organization's operational state or can identify SLEM 5 or platform. Additionally, Personally Identifiable Information (PII) and operational information must not be revealed through error messages to unauthorized personnel or their designated representatives. The structure and content of error messages must be carefully considered by the organization and development team. The extent to which the information system is able to identify and handle error conditions is guided by organizational policy and operational requirements.

Description

Only authorized personnel should be aware of errors and the details of the errors. Error messages are an indicator of an organization's operational state or can identify SLEM 5 or platform. Additionally, Personally Identifiable Information (PII) and operational information must not be revealed through error messages to unauthorized personnel or their designated representatives. The structure and content of error messages must be carefully considered by the organization and development team. The extent to which the information system is able to identify and handle error conditions is guided by organizational policy and operational requirements.

STIG	Date
SUSE Linux Enterprise Micro (SLEM) 5 Security Technical Implementation Guide	2024-06-04

Details

Check Text ( C-65037r996393_chk )
Verify SLEM 5 prevents unauthorized users from accessing system error messages. Check the "/var/log/messages" file permissions with the following command: > sudo stat -c "%n %U:%G %a" /var/log/messages /var/log/messages root:root 640 Check that "permissions.local" file contains the correct permissions rules with the following command: > grep -i messages /etc/permissions.local /var/log/messages root:root 640 If the effective permissions do not match the "permissions.local" file, the command does not return any output, or is commented out, this is a finding.

Check Text ( C-65037r996393_chk )

Verify SLEM 5 prevents unauthorized users from accessing system error messages.

Check the "/var/log/messages" file permissions with the following command:

> sudo stat -c "%n %U:%G %a" /var/log/messages
/var/log/messages root:root 640

Check that "permissions.local" file contains the correct permissions rules with the following command:

> grep -i messages /etc/permissions.local
/var/log/messages root:root 640

If the effective permissions do not match the "permissions.local" file, the command does not return any output, or is commented out, this is a finding.

Fix Text (F-64945r996394_fix)
Configure SLEM 5 to prevent unauthorized users from accessing system error messages. Add or update the following rules in "/etc/permissions.local": /var/log/messages root:root 640 Set the correct permissions with the following command: > sudo chkstat --set --system