The at.deny file must have mode 0600 or less permissive.

From Red Hat Enterprise Linux 5 Security Technical Implementation Guide

Associated with IA controls: ECLP-1

Associated with: CCI-000225

SV-26555r1_rule The at.deny file must have mode 0600 or less permissive.

Vulnerability discussion

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.

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Change the mode of the file. # chmod 0600 /etc/at.deny

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