The sticky bit must be set on all world writable directories.

From Solaris 11 SPARC Security Technical Implementation Guide

Associated with: CCI-000366

SV-61009r1_rule The sticky bit must be set on all world writable directories.

Vulnerability discussion

Files in directories that have had the "sticky bit" enabled can only be deleted by users that have both write permissions for the directory in which the file resides, as well as ownership of the file or directory, or have sufficient privileges. As this prevents users from overwriting each others' files, whether it be accidental or malicious, it is generally appropriate for most world-writable directories (e.g., /tmp).

Check content

The root role is required. Identify all world-writable directories without the "sticky bit" set. # find / \( -fstype nfs -o -fstype cachefs -o -fstype autofs \ -o -fstype ctfs -o -fstype mntfs -o -fstype objfs \ -o -fstype proc \) -prune -o -type d \( -perm -0002 \ -a ! -perm -1000 \) -ls Output of this command identifies world-writable directories without the "sticky bit" set. If output is created, this is a finding.

Fix text

The root role is required. Ensure that the "sticky bit" is set on any directories identified during the check steps. # chmod +t [directory name]

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