Check: GEN000253
SUSE Linux Enterprise Server v11 for System z STIG:
GEN000253
(in versions v1 r12 through v1 r9)
Title
The time synchronization configuration file (such as /etc/ntp.conf) must not have an extended ACL. (Cat II impact)
Discussion
A synchronized system clock is critical for the enforcement of time-based policies and the correlation of logs and audit records with other systems. If an illicit time source is used for synchronization, the integrity of system logs and the security of the system could be compromised. If the configuration files controlling time synchronization are not protected, unauthorized modifications could result in the failure of time synchronization.
Check Content
Check the NTP configuration file has no extended ACL. # ls -l /etc/ntp.conf If the permissions include a '+', the file has an extended ACL. If the file has an extended ACL and it has not been documented with the IAO, this is a finding.
Fix Text
Remove the extended ACL from the NTP configuration file. # setfacl --remove-all /etc/ntp.conf
Additional Identifiers
Rule ID: SV-44788r1_rule
Vulnerability ID: V-22297
Group Title: GEN000253
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 |