Check: GEN002540
AIX 6.1 SECURITY TECHNICAL IMPLEMENTATION GUIDE:
GEN002540
(in versions v1 r14 through v1 r10)
Title
All public directories must be group-owned by system or an application group. (Cat II impact)
Discussion
If a public directory has the sticky bit set and is not group-owned by a system GID, 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 group ownership of public directories. Procedure: # find / -type d -perm -1002 -exec ls -ld {} \; If any public directory is not group-owned by system, sys, bin, or an application group, this is a finding.
Fix Text
Change the group ownership of the public directory. Procedure: # chgrp system /tmp (Replace system with a different system group and/or /tmp with a different public directory as necessary.)
Additional Identifiers
Rule ID: SV-40066r1_rule
Vulnerability ID: V-11990
Group Title: GEN002540
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 |