Title

The sticky bit must be set on all public directories. (Cat III impact)

Discussion

Failing to set the sticky bit on the public directories allows unauthorized users to delete files in the directory structure. The only authorized public directories are those temporary directories supplied with the system or those designed to be temporary file repositories. The setting is normally reserved for directories used by the system and by users for temporary file storage (e.g., /tmp) and for directories requiring global read/write access.

Check Content

Enter the following command to search public directories. find / -type d -perm -002 -exec ls -ld {} \; Review the results. If any public directories do not have the sticky bit set, this is a finding.

Fix Text

Open a terminal session and enter the following command to set the sticky bit on all public directories. chmod 1777 <public directory missing the sticky bit>

Additional Identifiers

Rule ID: SV-37991r1_rule

Vulnerability ID: V-806

Group Title:

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.