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The at daemon must not execute programs in, or subordinate to, world-writable directories.


Overview

Finding ID Version Rule ID IA Controls Severity
V-989 GEN003380 SV-989r6_rule DCSL-1 Medium
Description
If at programs are located in, or subordinate, to world-writable directories, they become vulnerable to removal and replacement by malicious users or system intruders.
STIG Date
Draft AIX Security Technical Implementation Guide 2011-08-17

Details

Check Text ( C-802r3_chk )
List any at jobs on the system.
Procedure:
# ls /var/spool/cron/atjobs /var/spool/atjobs

For each at job, determine which programs are executed by at.
Procedure:
# more

Check the directory containing each program executed by at for world-writable permissions.
Procedure:
# ls –la

If at executes programs in world-writable directories, this is a finding.
Fix Text (F-1143r3_fix)
Remove the world-writable permission from directories containing programs executed by at.

Procedure:
# chmod o-w