Details
Setting the sticky bit on world writable directories prevents users from deleting or renaming files in that directory that are not owned by them.
Rationale:
This feature prevents the ability to delete or rename files in world writable directories (such as /tmp ) that are owned by another user.
Solution
Run the following command to set the sticky bit on all world writable directories:
# df –local -P | awk ‘{if (NR!=1) print $6}’ | xargs -I ‘{}’ find ‘{}’ -xdev -type d ( -perm -0002 -a ! -perm -1000 ) 2>/dev/null | xargs -I ‘{}’ chmod a+t ‘{}’
Notes:
Some distributions may not support the –local option to df.
Supportive Information
The following resource is also helpful.
This security hardening control applies to the following category of controls within NIST 800-53: Configuration Management.This control applies to the following type of system Unix.