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CCE
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CCE-90643-8

Platform: cpe:/o:centos:centos:7, cpe:/o:redhat:enterprise_linux:7Date: (C)2017-06-29   (M)2023-07-04



If the 'auditd' daemon is configured to use the 'augenrules' program to read audit rules during daemon startup (the default), add the following line to a file with suffix '.rules' in the directory '/etc/audit/rules.d': '-a always,exit -F arch=b32 -S adjtimex -k audit_time_rules' If the system is 64 bit then also add the following line: '-a always,exit -F arch=b64 -S adjtimex -k audit_time_rules' If the 'auditd' daemon is configured to use the 'auditctl' utility to read audit rules during daemon startup, add the following line to '/etc/audit/audit.rules' file: '-a always,exit -F arch=b32 -S adjtimex -k audit_time_rules' If the system is 64 bit then also add the following line: '-a always,exit -F arch=b64 -S adjtimex -k audit_time_rules' The -k option allows for the specification of a key in string form that can be used for better reporting capability through ausearch and aureport. Multiple system calls can be defined on the same line to save space if desired, but is not required. See an example of multiple combined syscalls: '-a always,exit -F arch=b64 -S adjtimex -S settimeofday -S clock_settime -k audit_time_rules'


Parameter:

[yes/no]


Technical Mechanism:

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.

CCSS Severity:CCSS Metrics:
CCSS Score : 7.3Attack Vector: NETWORK
Exploit Score: 3.9Attack Complexity: LOW
Impact Score: 3.4Privileges Required: NONE
Severity: HIGHUser Interaction: NONE
Vector: AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:LScope: UNCHANGED
 Confidentiality: LOW
 Integrity: LOW
 Availability: LOW
  

References:
Resource IdReference
SCAP Repo OVAL Definitionoval:org.secpod.oval:def:31057
SCAP Repo OVAL Definitionoval:org.secpod.oval:def:30334


OVAL    2
oval:org.secpod.oval:def:30334
oval:org.secpod.oval:def:31057
XCCDF    4
xccdf_org.secpod_benchmark_SecPod_RHEL_7
xccdf_org.secpod_benchmark_SecPod_CentOS_7
xccdf_org.secpod_benchmark_general_CENTOS_7
xccdf_org.secpod_benchmark_general_RHEL_7
...

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