Red Hat Enterprise Linux 5 Security Technical Implementation Guide

The Red Hat Enterprise Linux 5 Security Technical Implementation Guide (V1 R18) has 571 STIG checks. New to STIG checklists? Read What is a STIG checklist?, CKL vs CKLB, and STIG vs SCAP benchmark.

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Severity

Version

V1 · R18

CurrentPublished Fri Apr 28 2017

The at.deny file must not have an extended ACL.

Red Hat Enterprise Linux 5 Security Technical Implementation Guide

Assessment Title

Rule Text

The at.deny file must not have an extended ACL.

Description

Discussion Text

The "at" daemon control files restrict access to scheduled job manipulation and must be protected. Unauthorized modification of the at.deny file could result in Denial of Service to authorized "at" users or provide unauthorized users with the ability to run "at" jobs.

New to STIG checklists? Read What is a STIG checklist? and CKL vs CKLB.

Objective

V-22393

Rule

SV-26558r1_rule

Severity

medium

Rule Version

GEN003255

Documentable

false

IA Controls

NIST SP 800-53

Rev 5

Assessment Procedure

Check Text

Check the permissions of the file.
# ls -lL /etc/at.deny
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.

Implementation Procedure

Fix Text

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

STIG check 174 of 571 in the Red Hat Enterprise Linux 5 STIG checklist

← Previous · V-22392The at.deny file must have mode 0600 or less permissive.Next · V-22394 →The cron.deny file must be group-owned by root, bin, or sys.