Check: RHEL-06-000515
Red Hat Enterprise Linux 6 STIG:
RHEL-06-000515
(in versions v2 r2 through v1 r14)
Title
The NFS server must not have the all_squash option enabled. (Cat III impact)
Discussion
The "all_squash" option maps all client requests to a single anonymous uid/gid on the NFS server, negating the ability to track file access by user ID.
Check Content
If the NFS server is read-only, in support of unrestricted access to organizational content, this is not applicable. The related "root_squash" option provides protection against remote administrator-level access to NFS server content. Its use is not a finding. To verify the "all_squash" option has been disabled, run the following command: # grep all_squash /etc/exports If there is output, this is a finding.
Fix Text
Remove any instances of the "all_squash" option from the file "/etc/exports". Restart the NFS daemon for the changes to take effect. # service nfs restart
Additional Identifiers
Rule ID: SV-218095r603264_rule
Vulnerability ID: V-218095
Group Title: SRG-OS-000104
Expert Comments
CCIs
| Number | Definition |
|---|---|
| CCI-000764 |
Uniquely identify and authenticate organizational users and associate that unique identification with processes acting on behalf of those users. |
Controls
| Number | Title |
|---|---|
| IA-2 |
Identification and Authentication (organizational Users) |