The at daemon must not execute group-writable or world-writable programs.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-988 | GEN003360 | SV-45668r1_rule | Medium |
| Description |
|---|
| 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. |
| STIG | Date |
|---|---|
| SUSE Linux Enterprise Server v11 for System z Security Technical Implementation Guide | 2018-09-19 |
Details
| Check Text ( C-43034r1_chk ) |
|---|
| List the "at" jobs on the system. Procedure: # ls -la /var/spool/at /var/spool/atjobs For each "at" job file, determine which programs are executed. Procedure: # more Check the each program executed by "at" for group- or world-writable permissions. Procedure: # ls -la If "at" executes group or world-writable programs, this is a finding. |
| Fix Text (F-39066r1_fix) |
|---|
| Remove group-write and world-write permissions from files executed by at jobs. Procedure: # chmod go-w |