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V-22369

CAT II (Medium)

All system audit files must not have extended ACLs.

Rule ID

SV-45211r1_rule

STIG

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

Version

V1R12

CCIs

CCI-000163

Discussion

If a user can write to the audit logs, then audit trails can be modified or destroyed and system intrusion may not be detected.

Check Content

Check the system audit log files for extended ACLs.

Procedure:
# grep "^log_file" /etc/audit/auditd.conf|sed s/^[^\/]*//|xargs ls -l

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 system audit file(s).   

# setfacl --remove-all [audit file]