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The Photon operating system must configure a secure umask for all shells.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-239153 | PHTN-67-000082 | SV-239153r675267_rule | Medium |
| Description |
|---|
| A user's umask influences the permissions assigned to files that a user creates. Setting an appropriate umask is important to make sure that information is not exposed to unprivileged users. |
| STIG | Date |
|---|---|
| VMware vSphere 6.7 Photon OS Security Technical Implementation Guide | 2021-04-15 |
Details
| Check Text ( C-42364r675265_chk ) |
|---|
| At the command line, execute the following command: # cat /etc/profile.d/umask.sh Expected result: # By default, the umask should be set. if [ "$(id -gn)" = "$(id -un)" -a $EUID -gt 99 ] ; then umask 002 else umask 027 fi If the output does not match the expected result, this is a finding. |
| Fix Text (F-42323r675266_fix) |
|---|
| Open /etc/profile.d/umask.sh with a text editor. Set the contents as follows: # By default, the umask should be set. if [ "$(id -gn)" = "$(id -un)" -a $EUID -gt 99 ] ; then umask 002 else umask 027 fi |