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← Back to SUSE Linux Enterprise Server v11 for System z Security Technical Implementation Guide

V-22324

CAT II (Medium)

The /etc/hosts file must be group-owned by root, bin, sys or system.

Rule ID

SV-44982r1_rule

STIG

SUSE Linux Enterprise Server v11 for System z Security Technical Implementation Guide

Version

V1R12

CCIs

CCI-000225

Discussion

The /etc/hosts file (or equivalent) configures local host name to IP address mappings that typically take precedence over DNS resolution. If this file is maliciously modified, it could cause the failure or compromise of security functions requiring name resolution, which may include time synchronization, centralized authentication, and remote system logging.

Check Content

Check the /etc/hosts file's group ownership.

Procedure:
# ls -lL /etc/hosts

If the file is not group-owned by root, bin, sys, or system, this is a finding.

Fix Text

Change the group-owner of the /etc/hosts file to root, sys, bin, or system.

Procedure:
# chgrp root /etc/hosts