Check: GEN002520
Title
All public directories must be owned by root or an application account. (Cat II impact)
Discussion
If a public directory has the sticky bit set and is not owned by a privileged UID, unauthorized users may be able to modify files created by others. 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
Check the ownership of all public directories. Procedure: # find / -type d -perm -1002 -exec ls -ld {} \; 2>/dev/null If any public directory is not owned by root or an application user, this is a finding.
Fix Text
Change the owner of public directories to root or an application account. Procedure: # chown root /tmp (Replace root with an application user and/or /tmp with another public directory as necessary.)
Additional Identifiers
Rule ID:
Vulnerability ID: V-807
Group Title:
Expert Comments
CCIs
| Number | Definition |
|---|---|
| CCI-000225 |
The organization employs the concept of least privilege, allowing only authorized accesses for users (and processes acting on behalf of users) which are necessary to accomplish assigned tasks in accordance with organizational missions and business functions. |
Controls
| Number | Title |
|---|---|
| AC-6 |
Least Privilege |