Check: GEN003360
AIX 6.1 SECURITY TECHNICAL IMPLEMENTATION GUIDE:
GEN003360
(in versions v1 r14 through v1 r10)
Title
The at daemon must not execute group-writable or world-writable programs. (Cat II impact)
Discussion
If the at facility executes world-writable or group-writable programs, it is possible for the programs to be accidentally or maliciously changed or replaced without the owner's intent or knowledge. This would cause a system security breach.
Check Content
List the "at" jobs on the system. Procedure: # ls -la /var/spool/cron/atjobs /var/spool/atjobs For each "at" job file, determine which programs are executed. Procedure: # more <at job file> Check each program executed by "at" for group- or world-writable permissions. Procedure: # ls -la <at program file> If "at" executes group- or world-writable programs, this is a finding.
Fix Text
Remove group-write and world-write permissions from files executed by "at" jobs. Procedure: # chmod go-w <file>
Additional Identifiers
Rule ID: SV-988r2_rule
Vulnerability ID: V-988
Group Title: GEN003360
Expert Comments
CCIs
| Number | Definition |
|---|---|
| CCI-000225 |
The organization employs the concept of least privilege, allowing only authorized accesses for users (and processes acting on behalf of users) which are necessary to accomplish assigned tasks in accordance with organizational missions and business functions. |
Controls
| Number | Title |
|---|---|
| AC-6 |
Least Privilege |