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Commit: dac76ab332cb6f7ca5cdbec311d2754a26f6d91e
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From ac5a43653e418d52ecba4f1469388615620cd731 Mon Sep 17 00:00:00 2001
From: Vojtech Polasek <vpolasek@redhat.com>
Date: Wed, 29 Apr 2020 11:54:04 +0200
Subject: [PATCH 1/3] add ansible remediation

---
 .../ansible/shared.yml                         | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100644 linux_os/guide/system/auditing/auditd_configure_rules/audit_rules_networkconfig_modification/ansible/shared.yml

diff --git a/linux_os/guide/system/auditing/auditd_configure_rules/audit_rules_networkconfig_modification/ansible/shared.yml b/linux_os/guide/system/auditing/auditd_configure_rules/audit_rules_networkconfig_modification/ansible/shared.yml
new file mode 100644
index 0000000000..3708226e66
--- /dev/null
+++ b/linux_os/guide/system/auditing/auditd_configure_rules/audit_rules_networkconfig_modification/ansible/shared.yml
@@ -0,0 +1,18 @@
+# platform = multi_platform_rhel,multi_platform_fedora,multi_platform_ol,multi_platform_rhv
+# reboot = true
+# strategy = restrict
+# complexity = low
+# disruption = low
+# remediate syscalls
+{{{ ansible_audit_augenrules_add_syscall_rule(syscalls=["sethostname", "setdomainname"], key="audit_rules_networkconfig_modification") }}}
+{{{ ansible_audit_auditctl_add_syscall_rule(syscalls=["sethostname", "setdomainname"], key="audit_rules_networkconfig_modification") }}}
+
+# remediate watches
+{{{ ansible_audit_augenrules_add_watch_rule(path='/etc/issue', permissions='wa', key='audit_rules_networkconfig_modification') }}}
+{{{ ansible_audit_auditctl_add_watch_rule(path='/etc/issue', permissions='wa', key='audit_rules_networkconfig_modification') }}}
+{{{ ansible_audit_augenrules_add_watch_rule(path='/etc/issue.net', permissions='wa', key='audit_rules_networkconfig_modification') }}}
+{{{ ansible_audit_auditctl_add_watch_rule(path='/etc/issue.net', permissions='wa', key='audit_rules_networkconfig_modification') }}}
+{{{ ansible_audit_augenrules_add_watch_rule(path='/etc/hosts', permissions='wa', key='audit_rules_networkconfig_modification') }}}
+{{{ ansible_audit_auditctl_add_watch_rule(path='/etc/hosts', permissions='wa', key='audit_rules_networkconfig_modification') }}}
+{{{ ansible_audit_augenrules_add_watch_rule(path='/etc/sysconfig/network', permissions='wa', key='audit_rules_networkconfig_modification') }}}
+{{{ ansible_audit_auditctl_add_watch_rule(path='/etc/sysconfig/network', permissions='wa', key='audit_rules_networkconfig_modification') }}}

From 8de44a2ec24813affd51377bcaa8472b53b67e86 Mon Sep 17 00:00:00 2001
From: Vojtech Polasek <vpolasek@redhat.com>
Date: Wed, 29 Apr 2020 11:54:23 +0200
Subject: [PATCH 2/3] improve tests

---
 .../tests/auditctl_correct_rules.pass.sh        | 17 +++++++++++++++++
 ...ules.pass.sh => augen_correct_rules.pass.sh} |  0
 .../tests/partial_rules.fail.sh                 | 10 ++++++++++
 3 files changed, 27 insertions(+)
 create mode 100644 linux_os/guide/system/auditing/auditd_configure_rules/audit_rules_networkconfig_modification/tests/auditctl_correct_rules.pass.sh
 rename linux_os/guide/system/auditing/auditd_configure_rules/audit_rules_networkconfig_modification/tests/{correct_rules.pass.sh => augen_correct_rules.pass.sh} (100%)
 create mode 100644 linux_os/guide/system/auditing/auditd_configure_rules/audit_rules_networkconfig_modification/tests/partial_rules.fail.sh

diff --git a/linux_os/guide/system/auditing/auditd_configure_rules/audit_rules_networkconfig_modification/tests/auditctl_correct_rules.pass.sh b/linux_os/guide/system/auditing/auditd_configure_rules/audit_rules_networkconfig_modification/tests/auditctl_correct_rules.pass.sh
new file mode 100644
index 0000000000..ac5059f31c
--- /dev/null
+++ b/linux_os/guide/system/auditing/auditd_configure_rules/audit_rules_networkconfig_modification/tests/auditctl_correct_rules.pass.sh
@@ -0,0 +1,17 @@
+#!/bin/bash
+
+# profiles = xccdf_org.ssgproject.content_profile_pci-dss
+
+# use auditctl
+sed -i "s%^ExecStartPost=.*%ExecStartPost=-/sbin/auditctl%" /usr/lib/systemd/system/auditd.service
+
+
+rm -rf /etc/audit/rules.d/*
+rm /etc/audit/audit.rules
+
+echo "-a always,exit -F arch=b32 -S sethostname,setdomainname -F key=audit_rules_networkconfig_modification" >> /etc/audit/audit.rules
+echo "-a always,exit -F arch=b64 -S sethostname,setdomainname -F key=audit_rules_networkconfig_modification" >> /etc/audit/audit.rules
+echo "-w /etc/issue -p wa -k audit_rules_networkconfig_modification" >> /etc/audit/audit.rules
+echo "-w /etc/issue.net -p wa -k audit_rules_networkconfig_modification" >> /etc/audit/audit.rules
+echo "-w /etc/hosts -p wa -k audit_rules_networkconfig_modification" >> /etc/audit/audit.rules
+echo "-w /etc/sysconfig/network -p wa -k audit_rules_networkconfig_modification" >> /etc/audit/audit.rules
diff --git a/linux_os/guide/system/auditing/auditd_configure_rules/audit_rules_networkconfig_modification/tests/correct_rules.pass.sh b/linux_os/guide/system/auditing/auditd_configure_rules/audit_rules_networkconfig_modification/tests/augen_correct_rules.pass.sh
similarity index 100%
rename from linux_os/guide/system/auditing/auditd_configure_rules/audit_rules_networkconfig_modification/tests/correct_rules.pass.sh
rename to linux_os/guide/system/auditing/auditd_configure_rules/audit_rules_networkconfig_modification/tests/augen_correct_rules.pass.sh
diff --git a/linux_os/guide/system/auditing/auditd_configure_rules/audit_rules_networkconfig_modification/tests/partial_rules.fail.sh b/linux_os/guide/system/auditing/auditd_configure_rules/audit_rules_networkconfig_modification/tests/partial_rules.fail.sh
new file mode 100644
index 0000000000..4991b02369
--- /dev/null
+++ b/linux_os/guide/system/auditing/auditd_configure_rules/audit_rules_networkconfig_modification/tests/partial_rules.fail.sh
@@ -0,0 +1,10 @@
+#!/bin/bash
+
+# profiles = xccdf_org.ssgproject.content_profile_pci-dss
+
+echo "-a always,exit -F arch=b32 -S sethostname,setdomainname -F key=audit_rules_networkconfig_modification" >> /etc/audit/rules.d/some.rules
+echo "-a always,exit -F arch=b64 -S sethostname,setdomainname -F key=audit_rules_networkconfig_modification" >> /etc/audit/rules.d/some.rules
+echo "-w /etc/issue -p wa -k audit_rules_networkconfig_modification" >> /etc/audit/audit.rules
+echo "-w /etc/issue.net -p wa -k audit_rules_networkconfig_modification" >> /etc/audit/audit.rules
+echo "-w /etc/hosts -p wa -k audit_rules_networkconfig_modification" >> /etc/audit/audit.rules
+echo "-w /etc/sysconfig/network -p wa -k audit_rules_networkconfig_modification" >> /etc/audit/audit.rules

From f488ee2cef17f8c5764b53d551beabdb8cbf0e60 Mon Sep 17 00:00:00 2001
From: Vojtech Polasek <vpolasek@redhat.com>
Date: Wed, 29 Apr 2020 17:13:12 +0200
Subject: [PATCH 3/3] fix metadata and rewrite remediation to use newer macro

---
 .../ansible/shared.yml                        | 21 ++++++++++++++++---
 1 file changed, 18 insertions(+), 3 deletions(-)

diff --git a/linux_os/guide/system/auditing/auditd_configure_rules/audit_rules_networkconfig_modification/ansible/shared.yml b/linux_os/guide/system/auditing/auditd_configure_rules/audit_rules_networkconfig_modification/ansible/shared.yml
index 3708226e66..fa07d5bf94 100644
--- a/linux_os/guide/system/auditing/auditd_configure_rules/audit_rules_networkconfig_modification/ansible/shared.yml
+++ b/linux_os/guide/system/auditing/auditd_configure_rules/audit_rules_networkconfig_modification/ansible/shared.yml
@@ -1,11 +1,26 @@
 # platform = multi_platform_rhel,multi_platform_fedora,multi_platform_ol,multi_platform_rhv
-# reboot = true
+# reboot =false
 # strategy = restrict
 # complexity = low
 # disruption = low
 # remediate syscalls
-{{{ ansible_audit_augenrules_add_syscall_rule(syscalls=["sethostname", "setdomainname"], key="audit_rules_networkconfig_modification") }}}
-{{{ ansible_audit_auditctl_add_syscall_rule(syscalls=["sethostname", "setdomainname"], key="audit_rules_networkconfig_modification") }}}
+#
+# What architecture are we on?
+#
+- name: Set architecture for audit tasks
+  set_fact:
+    audit_arch: "b{{ ansible_architecture | regex_replace('.*(\\d\\d$)','\\1') }}"
+
+- name: Remediate audit rules for network configuration for x86
+  block:
+    {{{ ansible_audit_augenrules_add_syscall_rule(arch="b32", syscalls=["sethostname", "setdomainname"], key="audit_rules_networkconfig_modification")|indent(4) }}}
+    {{{ ansible_audit_auditctl_add_syscall_rule(arch="b32", syscalls=["sethostname", "setdomainname"], key="audit_rules_networkconfig_modification")|indent(4) }}}
+
+- name: Remediate audit rules for network configuration for x86_64
+  block:
+    {{{ ansible_audit_augenrules_add_syscall_rule(arch="b64", syscalls=["sethostname", "setdomainname"], key="audit_rules_networkconfig_modification")|indent(4) }}}
+    {{{ ansible_audit_auditctl_add_syscall_rule(arch="b64", syscalls=["sethostname", "setdomainname"], key="audit_rules_networkconfig_modification")|indent(4) }}}
+  when: audit_arch == "b64"
 
 # remediate watches
 {{{ ansible_audit_augenrules_add_watch_rule(path='/etc/issue', permissions='wa', key='audit_rules_networkconfig_modification') }}}
skyler / rpms / scap-security-guide

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