The OS X system must be configured with the sticky bit set on all public directories.

From Apple OS X 10.12 Security Technical Implementation Guide

Associated with: CCI-000366

SV-90813r1_rule The OS X system must be configured with the sticky bit set on all public directories.

Vulnerability discussion

The sticky bit must be set on all public directories, as it prevents users with write access to the directory from deleting or renaming files that belong to other users inside it.

Check content

Run the following command to view all world-writable directories that do not have the "sticky bit" set: /usr/bin/sudo /usr/bin/find / -type d \( -perm -0002 -a ! -perm -1000 \) If anything is returned, this is a finding.

Fix text

Run the following command to set the "sticky bit" on all world-writable directories: /usr/bin/sudo /usr/bin/find / -type d \( -perm -0002 -a ! -perm -1000 \) -exec chmod +t {} \;

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