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commit 5d498096c3

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Author: Robert Kaussow <mail@thegeeklab.de>
Date:   Sun Sep 25 13:08:42 2022 +0200

    chore: update default rules
This commit is contained in:
Robert Kaussow 2022-09-25 11:14:10 +00:00
parent d9ffea8a8f
commit 5a1b53aad5
1 changed files with 69 additions and 68 deletions
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index.md
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@ -46,7 +46,7 @@ auditd_action_mail_acct: root
#### Default value
```YAML
auditd_admin_space_left_action: SUSPEND
auditd_admin_space_left_action: halt
```
### auditd_buffer_size
@ -143,89 +143,90 @@ auditd_filter_rules_extra:
```YAML
auditd_main_rules_default:
- comment: CIS 4.1.4 - Changes to the time
- comment: CIS 4.1.3.1 - Changes to system administration scope
rule:
- -a always,exit -F arch=b64 -S adjtimex -S settimeofday -k time-change
- -a always,exit -F arch=b32 -S adjtimex -S settimeofday -S stime -k time-change
- -a always,exit -F arch=b64 -S clock_settime -k time-change
- -a always,exit -F arch=b32 -S clock_settime -k time-change
- -w /etc/sudoers -p wa -k actions
- -w /etc/sudoers.d/ -p wa -k actions
- comment: CIS 4.1.3.4 - Events that modify date and time information
rule:
- -a always,exit -F arch=b64 -S adjtimex,settimeofday,clock_settime -k time_change
- -a always,exit -F arch=b32 -S adjtimex,settimeofday,clock_settime,stime -k
time_change
- -w /etc/localtime -p wa -k time-change
- comment: CIS 4.1.5 - Changes to user/group information
- comment: CIS 4.1.3.5 - Changes to the network environment
rule:
- -a always,exit -F arch=b64 -S sethostname,setdomainname -k system-locale
- -a always,exit -F arch=b32 -S sethostname,setdomainname -k system-locale
- -w /etc/issue -p wa -k system-locale
- -w /etc/issue.net -p wa -k system-locale
- -w /etc/hosts -p wa -k system-locale
- -w /etc/sysconfig/network -p wa -k system-locale
- -w /etc/sysconfig/network-scripts/ -p wa -k system-locale
- comment: CIS 4.1.3.7 - Unsuccessful file access attempts
rule:
- -a always,exit -F arch=b64 -S creat,open,openat,truncate,ftruncate -F exit=-EACCES
-F auid>=1000 -F auid!=unset -k access
- -a always,exit -F arch=b64 -S creat,open,openat,truncate,ftruncate -F exit=-EPERM
-F auid>=1000 -F auid!=unset -k access
- -a always,exit -F arch=b32 -S creat,open,openat,truncate,ftruncate -F exit=-EACCES
-F auid>=1000 -F auid!=unset -k access
- -a always,exit -F arch=b32 -S creat,open,openat,truncate,ftruncate -F exit=-EPERM
-F auid>=1000 -F auid!=unset -k access
- comment: CIS 4.1.3.8 - Modify user/group information
rule:
- -w /etc/group -p wa -k identity
- -w /etc/passwd -p wa -k identity
- -w /etc/gshadow -p wa -k identity
- -w /etc/shadow -p wa -k identity
- -w /etc/security/opasswd -p wa -k identity
- comment: CIS 4.1.6 - Changes to the network environment
- comment: CIS 4.1.3.9 - Discretionary access control permission modifications
rule:
- -a exit,always -F arch=b64 -S sethostname -S setdomainname -k system-locale
- -a exit,always -F arch=b32 -S sethostname -S setdomainname -k system-locale
- -w /etc/issue -p wa -k system-locale
- -w /etc/issue.net -p wa -k system-locale
- -w /etc/hosts -p wa -k system-locale
- -w /etc/network -p wa -k system-locale
- comment: CIS 4.1.7 - Changes to system's Mandatory Access Controls
- -a always,exit -F arch=b64 -S chmod,fchmod,fchmodat -F auid>=1000 -F auid!=unset
-F key=perm_mod
- -a always,exit -F arch=b64 -S chown,fchown,lchown,fchownat -F auid>=1000 -F
auid!=unset -F key=perm_mod
- -a always,exit -F arch=b32 -S chmod,fchmod,fchmodat -F auid>=1000 -F auid!=unset
-F key=perm_mod
- -a always,exit -F arch=b32 -S lchown,fchown,chown,fchownat -F auid>=1000 -F
auid!=unset -F key=perm_mod
- -a always,exit -F arch=b64 -S setxattr,lsetxattr,fsetxattr,removexattr,lremovexattr,fremovexattr
-F auid>=1000 -F auid!=unset -F key=perm_mod
- -a always,exit -F arch=b32 -S setxattr,lsetxattr,fsetxattr,removexattr,lremovexattr,fremovexattr
-F auid>=1000 -F auid!=unset -F key=perm_mod
- comment: CIS 4.1.3.10 - Successful file system mounts
rule:
- -w /etc/apparmor/ -p wa -k MAC-policy
- -w /etc/apparmor.d/ -p wa -k MAC-policy
- comment: CIS 4.1.8 - Log login/logout events
rule:
- -w /var/log/faillog -p wa -k logins
- -w /var/log/lastlog -p wa -k logins
- -w /var/log/tallylog -p wa -k logins
- comment: CIS 4.1.9 - Log session initiation information
- -a always,exit -F arch=b64 -S mount -F auid>=1000 -F auid!=4294967295 -k mounts
- -a always,exit -F arch=b32 -S mount -F auid>=1000 -F auid!=4294967295 -k mounts
- comment: CIS 4.1.3.11 - Session initiation information
rule:
- -w /var/run/utmp -p wa -k session
- -w /var/log/wtmp -p wa -k logins
- -w /var/log/btmp -p wa -k logins
- comment: CIS 4.1.10 - Log Discretionary Access Control modifications
- comment: CIS 4.1.3.12 - Login and logout events
rule:
- -a always,exit -F arch=b64 -S chmod -S fchmod -S fchmodat -F auid>=1000 -F
auid!=4294967295 -k perm_mod
- -a always,exit -F arch=b32 -S chmod -S fchmod -S fchmodat -F auid>=1000 -F
auid!=4294967295 -k perm_mod
- -a always,exit -F arch=b64 -S chown -S fchown -S fchownat -S lchown -F auid>=1000
-F auid!=4294967295 -k perm_mod
- -a always,exit -F arch=b32 -S chown -S fchown -S fchownat -S lchown -F auid>=1000
-F auid!=4294967295 -k perm_mod
- -a always,exit -F arch=b64 -S setxattr -S lsetxattr -S fsetxattr -S removexattr
-S lremovexattr -S fremovexattr -F auid>=1000 -F auid!=4294967295 -k perm_mod
- -a always,exit -F arch=b32 -S setxattr -S lsetxattr -S fsetxattr -S removexattr
-S lremovexattr -S fremovexattr -F auid>=1000 -F auid!=4294967295 -k perm_mod
- comment: CIS 4.1.11 - Log unsuccessful unauthorized file access attempts
- -w /var/log/lastlog -p wa -k logins
- -w /var/log/tallylog -p wa -k logins
- -w /var/run/faillock -p wa -k logins
- comment: CIS 4.1.3.13 - File deletion events by users
rule:
- -a always,exit -F arch=b64 -S creat -S open -S openat -S truncate -S ftruncate
-F exit=-EACCES -F auid>=1000 -F auid!=4294967295 -k access
- -a always,exit -F arch=b32 -S creat -S open -S openat -S truncate -S ftruncate
-F exit=-EACCES -F auid>=1000 -F auid!=4294967295 -k access
- -a always,exit -F arch=b64 -S creat -S open -S openat -S truncate -S ftruncate
-F exit=-EPERM -F auid>=1000 -F auid!=4294967295 -k access
- -a always,exit -F arch=b32 -S creat -S open -S openat -S truncate -S ftruncate
-F exit=-EPERM -F auid>=1000 -F auid!=4294967295 -k access
- comment: CIS 4.1.13 - Log successful file system mounts
- -a always,exit -F arch=b64 -S unlink,unlinkat,rename,renameat -F auid>=1000
-F auid!=unset -k delete
- -a always,exit -F arch=b32 -S unlink,unlinkat,rename,renameat -F auid>=1000
-F auid!=unset -k delete
- comment: CIS 4.1.3.14 - Changes to the Mandatory Access Controls
rule:
- -a always,exit -F arch=b64 -S mount -F auid>=1000 -F auid!=4294967295 -k mounts
- -a always,exit -F arch=b32 -S mount -F auid>=1000 -F auid!=4294967295 -k mounts
- comment: CIS 4.1.14 - Log file deletion Events by User
- -w /etc/selinux/ -p wa -k MAC-policy
- -w /usr/share/selinux/ -p wa -k MAC-policy
- comment: CIS 4.1.3.19 - Kernel module loading unloading and modification
rule:
- -a always,exit -F arch=b64 -S unlink -S unlinkat -S rename -S renameat -F
auid>=1000 -F auid!=4294967295 -k delete
- -a always,exit -F arch=b32 -S unlink -S unlinkat -S rename -S renameat -F
auid>=1000 -F auid!=4294967295 -k delete
- comment: CIS 4.1.15 - Log changes to sudoers
rule:
- -w /etc/sudoers -p wa -k scope
- -w /etc/sudoers.d/ -p wa -k scope
- comment: CIS 4.1.16 - Log sudolog
rule:
- -w /var/log/sudo.log -p wa -k actions
- comment: CIS 4.1.17 - Log kernel module actions
rule:
- -w /sbin/insmod -p x -k modules
- -w /sbin/rmmod -p x -k modules
- -w /sbin/modprobe -p x -k modules
- -a always,exit -F arch=b64 -S init_module -S delete_module -k modules
- -a always,exit -F arch=b64 -S finit_module,create_module,query_module -F auid>=1000
-F auid!=unset -k kernel_modules
- -a always,exit -F arch=b32 -S finit_module,create_module,query_module -F auid>=1000
-F auid!=unset -k kernel_modules
- -a always,exit -F arch=b64 -S init_module,delete_module -k kernel_modules
- -a always,exit -F arch=b32 -S init_module,delete_module -k kernel_modules
- -a always,exit -F path=/usr/bin/kmod -F perm=x -F auid>=1000 -F auid!=unset
-k kernel_modules
```
### auditd_main_rules_extra
@ -251,7 +252,7 @@ auditd_max_log_file: 10
#### Default value
```YAML
auditd_max_log_file_action: ROTATE
auditd_max_log_file_action: rotate
```
### auditd_num_logs
@ -295,7 +296,7 @@ auditd_refuse_manual_stop: true
#### Default value
```YAML
auditd_space_left_action: SYSLOG
auditd_space_left_action: email
```