The sticky bit must be set on all public directories.

From Apple OS X 10.10 (Yosemite) Workstation Security Technical Implementation Guide

Associated with: CCI-000366

SV-74161r2_rule The sticky bit must be 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: sudo 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: sudo find / -type d \( -perm -0002 -a ! -perm -1000 \) -exec chmod +t {} \;

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