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

From AIX 6.1 SECURITY TECHNICAL IMPLEMENTATION GUIDE

Associated with IA controls: DCSL-1

Associated with: CCI-000225

SV-989r2_rule The "at" daemon must not execute programs in, or subordinate to, world-writable directories.

Vulnerability discussion

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.

Check content

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. 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

Remove the world-writable permission from directories containing programs executed by "at". Procedure: # chmod o-w

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