Check: OL6-00-000167
Oracle Linux 6 STIG:
OL6-00-000167
(in versions v2 r7 through v1 r16)
Title
The audit system must be configured to audit all attempts to alter system time through settimeofday. (Cat III impact)
Discussion
Arbitrary changes to the system time can be used to obfuscate nefarious activities in log files, as well as to confuse network services that are highly dependent upon an accurate system time (such as sshd). All changes to the system time should be audited.
Check Content
To determine if the system is configured to audit calls to the "settimeofday" system call, run the following command: $ sudo grep -w "settimeofday" /etc/audit/audit.rules -a always,exit -F arch=b32 -S settimeofday -k audit_time_rules -a always,exit -F arch=b64 -S settimeofday -k audit_time_rules If the system is 64-bit and does not return a rule for both "b32" and "b64" architectures, this is a finding. If the system is not configured to audit the "settimeofday" system call, this is a finding.
Fix Text
On a 32-bit system, add the following to "/etc/audit/audit.rules": # audit_time_rules -a always,exit -F arch=b32 -S settimeofday -k audit_time_rules If the system is 64-bit, then also add the following: # audit_time_rules -a always,exit -F arch=b64 -S settimeofday -k audit_time_rules
Additional Identifiers
Rule ID: SV-208883r793668_rule
Vulnerability ID: V-208883
Group Title: SRG-OS-000062
Expert Comments
CCIs
Number | Definition |
---|---|
CCI-000169 |
The information system provides audit record generation capability for the auditable events defined in AU-2 a. at organization-defined information system components. |
Controls
Number | Title |
---|---|
AU-12 |
Audit Generation |