Merge pull request #15875 from Security-Onion-Solutions/3/sigma-fp-os

proc_creation per OS type

salt/elastic-fleet-package-registry/enabled.sls

@@ -51,6 +51,16 @@ so-elastic-fleet-package-registry:
       - {{ ULIMIT.name }}={{ ULIMIT.soft }}:{{ ULIMIT.hard }}
     {%   endfor %}
     {% endif %}
+
+wait_for_so-elastic-fleet-package-registry:
+  http.wait_for_successful_query:
+    - name: "http://localhost:8080/health"
+    - status: 200
+    - wait_for: 300
+    - request_interval: 15
+    - require:
+      - docker_container: so-elastic-fleet-package-registry
+
 delete_so-elastic-fleet-package-registry_so-status.disabled:
   file.uncomment:
     - name: /opt/so/conf/so-status/so-status.conf

salt/elasticsearch/files/ingest/common

@@ -63,7 +63,8 @@
     { "set":             { "if": "ctx.event?.dataset != null && !ctx.event.dataset.contains('.')", "field": "event.dataset", "value": "{{event.module}}.{{event.dataset}}" } },
     { "split":           { "if": "ctx.event?.dataset != null && ctx.event.dataset.contains('.')", "field": "event.dataset", "separator": "\\.", "target_field": "dataset_tag_temp" } },
     { "append":          { "if": "ctx.dataset_tag_temp != null", "field": "tags", "value": "{{dataset_tag_temp.1}}"  } },
-    { "grok":            { "if": "ctx.http?.response?.status_code != null", "field": "http.response.status_code", "patterns": ["%{NUMBER:http.response.status_code:long} %{GREEDYDATA}"]} },
+    { "grok":            { "if": "ctx.http?.response?.status_code instanceof String", "field": "http.response.status_code", "patterns": ["%{NUMBER:http.response.status_code:long}(?:\\s+%{GREEDYDATA})?"], "ignore_failure": true } },
+    { "convert":         { "if": "ctx.http?.response?.status_code != null && !(ctx.http.response.status_code instanceof Number)", "field": "http.response.status_code", "type": "long", "ignore_failure": true } },
     { "set":             { "if": "ctx?.metadata?.kafka != null" , "field": "kafka.id", "value": "{{metadata.kafka.partition}}{{metadata.kafka.offset}}{{metadata.kafka.timestamp}}", "ignore_failure": true } },
     { "remove":          { "field": [ "message2", "type", "fields", "category", "module", "dataset", "dataset_tag_temp", "event.dataset_temp" ], "ignore_missing": true, "ignore_failure": true } },
     { "pipeline": { "name": "global@custom", "ignore_missing_pipeline": true, "description": "[Fleet] Global pipeline for all data streams" } }

salt/orch/delete_hypervisor.sls

@@ -3,7 +3,14 @@
 # https://securityonion.net/license; you may not use this file except in compliance with the
 # Elastic License 2.0.
 
-{% set hypervisor = pillar.minion_id %}
+{% set hypervisor = pillar.get('minion_id', '') %}
+
+{% if not hypervisor|regex_match('^([A-Za-z0-9._-]{1,253})$') %}
+{%   do salt.log.error('delete_hypervisor_orch: refusing unsafe minion_id=' ~ hypervisor) %}
+delete_hypervisor_invalid_minion_id:
+  test.fail_without_changes:
+    - name: delete_hypervisor_invalid_minion_id
+{% else %}
 
 ensure_hypervisor_mine_deleted:
   salt.function:
@@ -20,3 +27,5 @@ update_salt_cloud_profile:
     - sls:
       - salt.cloud.config
     - concurrent: True
+
+{% endif %}

salt/orch/vm_pillar_clean.sls

@@ -12,7 +12,14 @@
 {% if 'vrt' in salt['pillar.get']('features', []) %}
 
 {%   do salt.log.debug('vm_pillar_clean_orch: Running') %}
-{%   set vm_name = pillar.get('vm_name') %}
+{%   set vm_name = pillar.get('vm_name', '') %}
+
+{%   if not vm_name|regex_match('^([A-Za-z0-9._-]{1,253})$') %}
+{%     do salt.log.error('vm_pillar_clean_orch: refusing unsafe vm_name=' ~ vm_name) %}
+vm_pillar_clean_invalid_name:
+  test.fail_without_changes:
+    - name: vm_pillar_clean_invalid_name
+{%   else %}
 
 delete_adv_{{ vm_name }}_pillar:
   module.run:
@@ -24,6 +31,8 @@ delete_{{ vm_name }}_pillar:
     - file.remove:
       - path: /opt/so/saltstack/local/pillar/minions/{{ vm_name }}.sls
 
+{%   endif %}
+
 {% else %}
 
 {%   do salt.log.error(

salt/reactor/check_hypervisor.sls

@@ -3,12 +3,15 @@
 # https://securityonion.net/license; you may not use this file except in compliance with the
 # Elastic License 2.0.
 
-{% if data['id'].endswith('_hypervisor') and data['result'] == True %}
+{% set hid = data['id'] %}
+{% if hid|regex_match('^([A-Za-z0-9._-]{1,253})$')
+   and hid.endswith('_hypervisor')
+   and data['result'] == True %}
 
 {%   if data['act'] == 'accept' %}
 check_and_trigger:
   runner.setup_hypervisor.setup_environment:
-    - minion_id: {{ data['id'] }}
+    - minion_id: {{ hid }}
 {%   endif %}
 
 {%   if data['act'] == 'delete' %}
@@ -17,8 +20,7 @@ delete_hypervisor:
     - args:
       - mods: orch.delete_hypervisor
       - pillar:
-          minion_id: {{ data['id'] }}
+          minion_id: {{ hid }}
 {%   endif %}
 
 {% endif %}
-

salt/reactor/createEmptyPillar.sls

@@ -1,7 +1,7 @@
 #!py
 
 # Copyright Security Onion Solutions LLC and/or licensed to Security Onion Solutions LLC under one
-# or more contributor license agreements. Licensed under the Elastic License 2.0 as shown at 
+# or more contributor license agreements. Licensed under the Elastic License 2.0 as shown at
 # https://securityonion.net/license; you may not use this file except in compliance with the
 # Elastic License 2.0.
 
@@ -9,30 +9,42 @@ import logging
 import os
 import pwd
 import grp
+import re
+
+log = logging.getLogger(__name__)
+
+PILLAR_ROOT = '/opt/so/saltstack/local/pillar/minions/'
+_VMNAME_RE = re.compile(r'^[A-Za-z0-9._-]{1,253}$')
+
 
 def run():
-  vm_name = data['kwargs']['name']
+  vm_name = data.get('kwargs', {}).get('name', '')
-  logging.error("createEmptyPillar reactor: vm_name: %s" % vm_name)
+  if not _VMNAME_RE.match(str(vm_name)):
-  pillar_root = '/opt/so/saltstack/local/pillar/minions/'
+    log.error("createEmptyPillar reactor: refusing unsafe vm_name=%r", vm_name)
+    return {}
+
+  log.info("createEmptyPillar reactor: vm_name: %s", vm_name)
   pillar_files = ['adv_' + vm_name + '.sls', vm_name + '.sls']
 
   try:
-    # Get socore user and group IDs
     socore_uid = pwd.getpwnam('socore').pw_uid
     socore_gid = grp.getgrnam('socore').gr_gid
+    pillar_root_real = os.path.realpath(PILLAR_ROOT)
 
     for f in pillar_files:
-      full_path = pillar_root + f
+      full_path = os.path.join(PILLAR_ROOT, f)
-      if not os.path.exists(full_path):
+      resolved = os.path.realpath(full_path)
-        # Create empty file
+      if os.path.dirname(resolved) != pillar_root_real:
-        os.mknod(full_path)
+        log.error("createEmptyPillar reactor: refusing path outside pillar root: %s", resolved)
-        # Set ownership to socore:socore
+        continue
-        os.chown(full_path, socore_uid, socore_gid)
+      if os.path.exists(resolved):
-        # Set mode to 644 (rw-r--r--)
+        continue
-        os.chmod(full_path, 0o640)
+      os.mknod(resolved)
-        logging.error("createEmptyPillar reactor: created %s with socore:socore ownership and mode 644" % f)
+      os.chown(resolved, socore_uid, socore_gid)
+      os.chmod(resolved, 0o640)
+      log.info("createEmptyPillar reactor: created %s with socore:socore ownership and mode 0640", f)
 
   except (KeyError, OSError) as e:
-    logging.error("createEmptyPillar reactor: Error setting ownership/permissions: %s" % str(e))
+    log.error("createEmptyPillar reactor: Error setting ownership/permissions: %s", e)
 
   return {}

salt/reactor/deleteKey.sls

@@ -1,18 +1,40 @@
+#!py
+
 # Copyright Security Onion Solutions LLC and/or licensed to Security Onion Solutions LLC under one
 # or more contributor license agreements. Licensed under the Elastic License 2.0 as shown at
 # https://securityonion.net/license; you may not use this file except in compliance with the
 # Elastic License 2.0.
 
-remove_key:
+import logging
-  wheel.key.delete:
+import re
-    - args:
-      - match: {{ data['name'] }}
 
-{{ data['name'] }}_pillar_clean:
+log = logging.getLogger(__name__)
-  runner.state.orchestrate:
-    - args:
-      - mods: orch.vm_pillar_clean
-      - pillar:
-          vm_name: {{ data['name'] }}
 
-{% do salt.log.info('deleteKey reactor: deleted minion key: %s' % data['name']) %}
+_VMNAME_RE = re.compile(r'^[A-Za-z0-9._-]{1,253}$')
+
+
+def run():
+  name = data.get('name', '')
+  if not _VMNAME_RE.match(str(name)):
+    log.error("deleteKey reactor: refusing unsafe name=%r", name)
+    return {}
+
+  log.info("deleteKey reactor: deleted minion key: %s", name)
+
+  return {
+    'remove_key': {
+      'wheel.key.delete': [
+        {'args': [
+          {'match': name},
+        ]},
+      ],
+    },
+    '%s_pillar_clean' % name: {
+      'runner.state.orchestrate': [
+        {'args': [
+          {'mods': 'orch.vm_pillar_clean'},
+          {'pillar': {'vm_name': name}},
+        ]},
+      ],
+    },
+  }

salt/soc/files/soc/sigma_so_pipeline.yaml

@@ -126,15 +126,36 @@ transformations:
           fields:
           - event.code
     # Maps process_creation rules to endpoint process creation logs
-    # This is an OS-agnostic mapping, to account for logs that don't specify source OS
     - id: endpoint_process_create_windows_add-fields
       type: add_condition
       conditions:
         event.category: 'process'
         event.type: 'start'
+        host.os.type: 'windows'
       rule_conditions:
       - type: logsource
         category: process_creation
+        product: windows
+    - id: endpoint_process_create_macos_add-fields
+      type: add_condition
+      conditions:
+        event.category: 'process'
+        event.type: 'start'
+        host.os.type: 'macos'
+      rule_conditions:
+      - type: logsource
+        category: process_creation
+        product: macos
+    - id: endpoint_process_create_linux_add-fields
+      type: add_condition
+      conditions:
+        event.category: 'process'
+        event.type: 'start'
+        host.os.type: 'linux'
+      rule_conditions:
+      - type: logsource
+        category: process_creation
+        product: linux
     # Maps file_event rules to endpoint file creation logs
     # This is an OS-agnostic mapping, to account for logs that don't specify source OS
     - id: endpoint_file_create_add-fields

salt/strelka/filecheck/filecheck

@@ -15,7 +15,7 @@ from watchdog.observers import Observer
 from watchdog.events import FileSystemEventHandler
 
 with open("/opt/so/conf/strelka/filecheck.yaml", "r") as ymlfile:
-    cfg = yaml.load(ymlfile, Loader=yaml.Loader)
+    cfg = yaml.safe_load(ymlfile)
 
 extract_path = cfg["filecheck"]["extract_path"]
 historypath = cfg["filecheck"]["historypath"]

setup/so-functions

@@ -1756,6 +1756,24 @@ remove_package() {
 	fi
 }
 
+ensure_pyyaml() {
+	title "Ensuring python3-pyyaml is installed"
+	if rpm -q python3-pyyaml >/dev/null 2>&1; then
+		info "python3-pyyaml already installed"
+		return 0
+	fi
+	info "python3-pyyaml not found, attempting to install"
+	set -o pipefail
+	dnf -y install python3-pyyaml 2>&1 | tee -a "$setup_log"
+	local result=$?
+	set +o pipefail
+	if [[ $result -ne 0 ]] || ! rpm -q python3-pyyaml >/dev/null 2>&1; then
+		error "Failed to install python3-pyyaml (exit=$result)"
+		fail_setup
+	fi
+	info "python3-pyyaml installed successfully"
+}
+
 # When updating the salt version, also update the version in securityonion-builds/images/iso-task/Dockerfile and salt/salt/master.defaults.yaml and salt/salt/minion.defaults.yaml
 # CAUTION! SALT VERSION UDDATES - READ BELOW
 # When updating the salt version, also update the version in:

setup/so-setup

@@ -66,6 +66,9 @@ set_timezone
 # Let's see what OS we are dealing with here
 detect_os
 
+# Ensure python3-pyyaml is available before any code that may need so-yaml/PyYAML
+ensure_pyyaml
+
 
 # Check to see if this is the setup type of "desktop".
 is_desktop=