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

V-22326

CAT II (Medium)

The /etc/hosts file must not have an extended ACL.

Rule ID

SV-44984r1_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

Verify /etc/hosts has no extended ACL.
# ls -l /etc/hosts
If the permissions include a '+', the file has an extended ACL. If the file has an extended ACL and it has not been documented with the IAO, this is a finding.

Fix Text

Remove the extended ACL from the file.
# setfacl --remove-all /etc/hosts