Check: GEN000000-LNX00560
VMware ESX 3 Server:
GEN000000-LNX00560
(in version v1 r2)
Title
The Linux NFS Server must not have the insecure file locking option. (Cat I impact)
Discussion
Insecure file locking could allow for sensitive data to be viewed or edited by an unauthorized user.
Check Content
Determine if an NFS server is running on the system by: # ps –ef |grep nfsd If an NFS server is running, confirm that it is not configured with the insecure_locks option by: # exportfs –v The example below would be a finding: /misc/export speedy.example.com(rw,insecure_locks)
Fix Text
Remove the "insecure_locks" option from all NFS exports on the system. Procedure: Edit /etc/exports and remove all instances of the insecure_locks option. Re-export the file systems to make the setting take effect. # exportfs -a
Additional Identifiers
Rule ID: SV-4339r2_rule
Vulnerability ID: V-4339
Group Title: GEN000000-LNX00560
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. |
| CCI-000764 |
The information system uniquely identifies and authenticates organizational users (or processes acting on behalf of organizational users). |