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|
#
# ex:ts=4:sw=4:sts=4:et
# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
#
# Security Response Tool Implementation
#
# Copyright (C) 2013-2015 Intel Corp.
# Copyright (C) 2017-2018 Wind River Systems
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
from django.core.management.base import BaseCommand
from django.core.exceptions import ObjectDoesNotExist
from orm.models import SrtSetting, DataSource, Vulnerability, Investigation
from orm.models import Cve, CveSet, CveToCveSet, VulnerabilityProduct
from orm.models import CveReference, CweTable, Product, CveToCwe
from orm.models import CpeToCve, CpeTable
from orm.models import CpeFilter, Product, Jira, InvestigationToJira, CveToVulnerablility
from orm.models import Keywords
import os
import sys
import re
import json
import xml.etree.ElementTree as ET
import csv
import logging
import threading
import time
logger = logging.getLogger("srt")
import urllib
def _log(msg):
f1=open('/tmp/srt.log', 'a')
f1.write("|" + msg + "|\n" )
f1.close()
# === Debugging limited database loading support ===
debug_cve_list = [] # empty list for any
#debug_cve_list = [
# 'CVE-2017-0001','CVE-2017-1000135','CVE-2017-10604','CVE-2017-0290',
# 'CVE-2017-8361','CVE-2017-8362','CVE-2017-8363','CVE-2017-8365','CVE-2017-8392','CVE-2017-8779',
# ]
#debug_cve_count = 0 # 0 for all
#debug_cve_count = 10 # 0 for any
#debug_include_id_prefix = 'CVE-2018' # always include CVEs with this prefix
#debug_include_id_prefix = 'XXX' # always include CVEs with this prefix
#status_sustaining_limit = 0 # 0 for all
#status_sustaining_limit = 10
#debug_jira_limit = 0 # 0 for all
#debug_jira_limit = 10
#cpe_limit = 0
#cpe_limit = 10
class Spinner(threading.Thread):
""" A simple progress spinner to indicate download/parsing is happening"""
def __init__(self, *args, **kwargs):
super(Spinner, self).__init__(*args, **kwargs)
self.setDaemon(True)
self.signal = True
def run(self):
os.system('setterm -cursor off')
while self.signal:
for char in ["/", "-", "\\", "|"]:
sys.stdout.write("\r" + char)
sys.stdout.flush()
time.sleep(0.25)
os.system('setterm -cursor on')
def stop(self):
self.signal = False
class Command(BaseCommand):
args = ""
help = "Updates locally cached information from the registered data sources"
# === Debugging limited database loading support ===
debug_cve_list = [] # empty list for any
debug_cve_count = 0 # 0 for all
debug_include_id_prefix = 'XXX' # always include CVEs with this prefix
status_sustaining_limit = 0 # 0 for all
debug_jira_limit = 0 # 0 for all
cpe_limit = 0
def mini_progress(self, what, i, total):
i = i + 1
pec = (float(i)/float(total))*100
sys.stdout.write("\rUpdating %s %d%%" %
(what,
pec))
sys.stdout.flush()
if int(pec) is 100:
sys.stdout.write("\n")
sys.stdout.flush()
def nist_scan_configuration_or(self, cve, cpe_or_node, name, and_enum):
cpe_list = '<or>|'
for cpe in cpe_or_node['cpe']:
cpe23Uri = cpe['cpe23Uri']
if 'cpeMatchString' in cpe:
cpeMatchString = cpe['cpeMatchString']
else:
cpeMatchString = ''
if 'versionEndIncluding' in cpe:
versionEndIncluding = cpe['versionEndIncluding']
else:
versionEndIncluding = ''
cpe_list += '%s,%s,%s,%s|' % (cpe['vulnerable'],cpe23Uri,cpeMatchString,versionEndIncluding)
cpe_list += '</or>|'
return cpe_list
def nist_jason(self, dct):
CVE_Items = dct['CVE_Items']
total = len(CVE_Items)
for i, CVE_Item in enumerate(CVE_Items):
cve = CVE_Item['cve']
references = cve['references']['reference_data']
CVE_data_meta = cve['CVE_data_meta']['ID']
# DEBUGGING SUPPORT !!! TODO
scan = True
status = Cve.NOT_VULNERABLE
if (Command.debug_cve_count or len(debug_cve_list)) and not CVE_data_meta.startswith(Command.debug_include_id_prefix):
scan = False
if Command.debug_cve_count:
if i < Command.debug_cve_count:
scan = True
if len(debug_cve_list):
for debug_cve in debug_cve_list:
if cve['CVE_data_meta']['ID'].startswith(debug_cve):
scan = True
status = Cve.INVESTIGATE
if not scan:
continue
if False:
print(" publishedDate: %s" % CVE_Item['publishedDate'])
print(" lastModifiedDate: %s" % CVE_Item['lastModifiedDate'])
print(" publishedDate: %s" % re.sub('T.*','',CVE_Item['publishedDate']))
print(" lastModifiedDate: %s" % re.sub('T.*','',CVE_Item['lastModifiedDate']))
print(" data_type: %s" % cve['data_type'])
print(" data_format: %s" % cve['data_format'])
print(" CVE_data_meta: %s" % cve['CVE_data_meta']['ID'])
print(" problemtype: %s" % cve['problemtype']['problemtype_data'][0]['description'][0]['value'])
print(" description: '%s'" % cve['description']['description_data'][0]['value'])
references = cve['references']['reference_data']
print(" References = %d" % len(references))
for ref in references:
print(" reference: %s" % ref['url'])
if CVE_Item['impact'] and CVE_Item['impact']['baseMetricV3']:
baseMetricV3 = CVE_Item['impact']['baseMetricV3']
print(" cvssV3 : %s,%s" % (baseMetricV3['exploitabilityScore'],baseMetricV3['impactScore']))
print(" vectorString = %s" % baseMetricV3['cvssV3']['vectorString'])
print(" attackVector = %s" % baseMetricV3['cvssV3']['attackVector'])
print(" attackComplexity = %s" % baseMetricV3['cvssV3']['attackComplexity'])
print(" privilegesRequired = %s" % baseMetricV3['cvssV3']['privilegesRequired'])
print(" userInteraction = %s" % baseMetricV3['cvssV3']['userInteraction'])
print(" scope = %s" % baseMetricV3['cvssV3']['scope'])
print(" confidentialityImpact = %s" % baseMetricV3['cvssV3']['confidentialityImpact'])
print(" integrityImpact = %s" % baseMetricV3['cvssV3']['integrityImpact'])
print(" availabilityImpact = %s" % baseMetricV3['cvssV3']['availabilityImpact'])
print(" baseScore = %s" % baseMetricV3['cvssV3']['baseScore'])
print(" baseSeverity = %s" % baseMetricV3['cvssV3']['baseSeverity'])
if CVE_Item['impact'] and CVE_Item['impact']['baseMetricV2']:
baseMetricV2 = CVE_Item['impact']['baseMetricV2']
print(" cvssV2 : %s,%s" % (baseMetricV2['exploitabilityScore'],baseMetricV2['exploitabilityScore']))
print(" vectorString = %s" % baseMetricV2['cvssV2']['vectorString'])
print(" accessVector = %s" % baseMetricV2['cvssV2']['accessVector'])
print(" accessComplexity = %s" % baseMetricV2['cvssV2']['accessComplexity'])
print(" authentication = %s" % baseMetricV2['cvssV2']['authentication'])
print(" confidentialityImpact = %s" % baseMetricV2['cvssV2']['confidentialityImpact'])
print(" integrityImpact = %s" % baseMetricV2['cvssV2']['integrityImpact'])
print(" availabilityImpact = %s" % baseMetricV2['cvssV2']['availabilityImpact'])
print(" baseScore = %s" % baseMetricV2['cvssV2']['baseScore'])
print(" severity = %s" % baseMetricV2['severity'])
try:
CVE_data_meta = cve['CVE_data_meta']['ID']
v, created = Cve.objects.get_or_create(name=CVE_data_meta)
v.name = CVE_data_meta
v.source = 'NIST'
status = Cve.NOT_VULNERABLE
# Debugging support
# if v.name.startswith("CVE-2018"):
# status = Cve.NEW
# v.status = status
v.tags = ''
v.tags_private = ''
v.cve_data_type = cve['data_type']
v.cve_data_format = cve['data_format']
v.cve_data_version = cve['data_version']
v.description = cve['description']['description_data'][0]['value']
v.publishedDate = re.sub('T.*','',CVE_Item['publishedDate'])
v.lastModifiedDate = re.sub('T.*','',CVE_Item['lastModifiedDate'])
v.public = True
v.publish = Cve.PUBLISH_PUBLISHED
v.publish_date = v.publishedDate
#v.problemtype = cve['problemtype']['problemtype_data'][0]['description'][0]['value']
problem_list = cve['problemtype']['problemtype_data']
CveToCwe.objects.filter(cve=v).delete()
for problem_Item in problem_list:
description_list = problem_Item['description']
for description_Item in description_list:
value = description_Item['value']
cwe, created = CweTable.objects.get_or_create(name=value)
if created:
print("WARNING Missing CWE = '%s'"% value)
cwe.save()
cve2cwe, created = CveToCwe.objects.get_or_create(cve=v,cwe=cwe)
if created:
cve2cwe.save()
# if CVE_Item['impact'] and CVE_Item['impact']['baseMetricV3']:
if ('impact' in CVE_Item) and ('baseMetricV3' in CVE_Item['impact']):
baseMetricV3 = CVE_Item['impact']['baseMetricV3']
v.cvssV3_baseScore = baseMetricV3['cvssV3']['baseScore']
v.cvssV3_baseSeverity = baseMetricV3['cvssV3']['baseSeverity']
v.cvssV3_vectorString = baseMetricV3['cvssV3']['vectorString']
v.cvssV3_exploitabilityScore = baseMetricV3['exploitabilityScore']
v.cvssV3_impactScore = baseMetricV3['impactScore']
v.cvssV3_attackVector = baseMetricV3['cvssV3']['attackVector']
v.cvssV3_attackComplexity = baseMetricV3['cvssV3']['attackComplexity']
v.cvssV3_privilegesRequired = baseMetricV3['cvssV3']['privilegesRequired']
v.cvssV3_userInteraction = baseMetricV3['cvssV3']['userInteraction']
v.cvssV3_scope = baseMetricV3['cvssV3']['scope']
v.cvssV3_confidentialityImpact = baseMetricV3['cvssV3']['confidentialityImpact']
v.cvssV3_integrityImpact = baseMetricV3['cvssV3']['integrityImpact']
v.cvssV3_availabilityImpact = baseMetricV3['cvssV3']['availabilityImpact']
if ('impact' in CVE_Item) and ('baseMetricV2' in CVE_Item['impact']):
baseMetricV2 = CVE_Item['impact']['baseMetricV2']
v.cvssV2_baseScore = baseMetricV2['cvssV2']['baseScore']
v.cvssV2_severity = baseMetricV2['severity']
v.cvssV2_vectorString = baseMetricV2['cvssV2']['vectorString']
v.cvssV2_exploitabilityScore = baseMetricV2['exploitabilityScore']
v.cvssV2_impactScore = baseMetricV2['exploitabilityScore']
v.cvssV2_accessVector = baseMetricV2['cvssV2']['accessVector']
v.cvssV2_accessComplexity = baseMetricV2['cvssV2']['accessComplexity']
v.cvssV2_authentication = baseMetricV2['cvssV2']['authentication']
v.cvssV2_confidentialityImpact = baseMetricV2['cvssV2']['confidentialityImpact']
v.cvssV2_integrityImpact = baseMetricV2['cvssV2']['integrityImpact']
## v.save()
CveReference.objects.filter(cve=v).delete()
for ref in references:
r, created = CveReference.objects.get_or_create(cve=v,
hyperlink=ref['url'])
r.resource = ''
r.type = ''
r.source = ''
r.name = ''
r.save()
# print(" reference: %s,%s" % (ref['url'],created))
configurations = CVE_Item['configurations']
v.cpe_list = ''
is_first_and = True
for i, config in enumerate(configurations['nodes']):
v.cpe_list += '<config>|'
v.cpe_list += '<and>|'
if "AND" == config['operator']:
# create AND record
if not is_first_and:
v.cpe_list += '</and>|'
v.cpe_list += '<and>|'
for j, cpe_or_node in enumerate(config['children']):
if "OR" == cpe_or_node['operator']:
v.cpe_list += self.nist_scan_configuration_or(v,cpe_or_node, CVE_data_meta, j)
else:
print("ERROR CONFIGURE:OR_OP?:%s" % cpe_or_node['operator'])
elif "OR" == config['operator']:
v.cpe_list += self.nist_scan_configuration_or(v,config, CVE_data_meta, 0)
else:
print("ERROR CONFIGURE:OP?:%s" % config_rec['operator'])
v.cpe_list += '</and>|'
v.cpe_list += '</config>|'
# # create a parent CveSet if needed
# cve_set, created = CveSet.objects.get_or_create(name=v.name)
# if created:
# cve_set.name = v.name
# cve_set.description = v.description
# cve_set.cvssV3_baseScore = v.cvssV3_baseScore
# cve_set.cvssV3_baseSeverity = v.cvssV3_baseSeverity
# cve_set.publishedDate = v.publishedDate
# cve_set.lastModifiedDate = v.lastModifiedDate
# cve_set.save()
#
# # connect the Cve with the CveSet
# cve2cveset, created = CveToCveSet.objects.get_or_create(cve=v, cveset=cve_set)
# cve2cveset.save()
# save the final CVE content
v.recommend = v.recommendation()
v.save()
except Exception as e:
logger.warning("Failed saving CVE %s (%s)", (cve['CVE_data_meta']['ID'],e))
return
self.mini_progress("CVE's", i, total)
def nist_cwe(self, content):
# <td nowrap><span id="cweIdEntry-CWE-123">CWE-123</span></td>
# <td nowrap><a href="http://cwe.mitre.org/data/definitions/123.html" target="_blank"> Write-what-where Condition</a></td>
# <td>Any condition where the attacker has the ability to write an arbitrary value to an arbitrary location, often as the result of a buffer overflow.</td>
state = 0
for line in content.split('\n'):
if (0 == state) and (0 < line.find('cweIdEntry')):
# <td nowrap><span id="cweIdEntry-CWE-613">CWE-613</span></td>
m = re.search('cweIdEntry.*>(.+?)<', line)
if m:
name = m.group(1)
else:
print("ERROR ID:%s" % line)
continue
state = 1
elif (1 == state) and (0 < line.find('href')):
# <td nowrap><a href="http://cwe.mitre.org/data/definitions/613.html" target="_blank"> Insufficient Session Expiration</a></td>
m = re.search('href="(.+?)"', line)
if m:
href = m.group(1)
else:
print("ERROR HREF:%s" % line)
continue
m = re.search('href.*>(.+?)<', line)
if m:
summary = m.group(1)
else:
print("ERROR Summary:%s" % line)
continue
state = 2
elif (1 == state) and (0 < line.find('<td nowrap>')):
# <td nowrap>Insufficient Information</td>
href = ''
m = re.search('nowrap>(.+?)<', line)
if m:
summary = m.group(1)
else:
print("ERROR Summary:%s" % line)
continue
state = 2
elif (2 == state) and (0 < line.find('<td>')):
# <td>Weaknesses in this category are related to improper calculation or conversion of numbers.</td>
m = re.search('<td>(.*?)</td>', line)
if m:
description = m.group(1)
else:
print("ERROR Desc:%s" % line)
continue
cwe, created = CweTable.objects.get_or_create(name=name)
index = name.find('-')
if name[index+1].isdigit():
cwe.name_sort = '%s-%04d' % (name[0:index],int(name[index+1:]))
else:
cwe.name_sort = name
cwe.href = href
cwe.summary = summary
cwe.description = description
cwe.save()
state = 0
def nist_cpe(self, root):
#<cpe-list
# <cpe-item name="cpe:/a:1024cms:1024_cms:0.7">
# <title xml:lang="en-US">1024cms.org 1024 CMS 0.7</title>
# <cpe-23:cpe23-item name="cpe:2.3:a:1024cms:1024_cms:0.7:*:*:*:*:*:*:*"/>
# </cpe-item>
i = 1
last_key_prime = ''
last_key_sub = ''
for child_1 in root:
if 'cpe-item' in child_1.tag:
for child_2 in child_1:
if 'cpe23-item' in child_2.tag:
cpe23Uri = child_2.attrib['name']
# Add to general CPE Table
if not cpe23Uri:
cpe23Uri = 'cpe:2.3:o:missing:missing:*:*:*:*:*:*:*:*'
cpe_fields = cpe23Uri.split(':')
key_prime = cpe_fields[3]
key_sub = cpe_fields[4]
if (key_prime == last_key_prime) and (key_sub == last_key_sub):
continue
last_key_prime = key_prime
last_key_sub = key_sub
# add top-level key_prime
cpe_filter, created = CpeFilter.objects.get_or_create(key_prime=key_prime,key_sub='')
if created:
cpe_filter.save()
# add full key_prime:key_sub
cpe_filter, created = CpeFilter.objects.get_or_create(key_prime=key_prime,key_sub=key_sub)
if created:
cpe_filter.save()
print("[%d]cpe23Uri='%s',%s,%s" % (i,cpe23Uri,key_prime,key_sub))
i += 1
def nist_cpe_csv(self, csvfile_name):
# Status,Company,Product,Auto
i=0
with open(csvfile_name, newline='') as csvfile:
CPE_reader = csv.reader(csvfile, delimiter=',', quotechar='"')
last_company = ''
last_product = ''
for row in CPE_reader:
i += 1
if (i>1) and len(row):
if 'i' == row[0]:
status = CpeFilter.INCLUDE
elif 'x' == row[0]:
status = CpeFilter.EXCLUDE
elif 'r' == row[0]:
status = CpeFilter.UNDECIDED
else:
status = CpeFilter.UNDECIDED
company = row[1]
product = row[2]
if 'a' == row[3]:
auto = True
else:
auto = False
if (last_company == company) and (last_product == product):
continue
last_company = company
last_product = product
# add top-level last_company
cpe_filter, created = CpeFilter.objects.get_or_create(key_prime=company,key_sub='')
cpe_filter.status = status
cpe_filter.automatic = auto
cpe_filter.save()
# add full last_company:product
cpe_filter, created = CpeFilter.objects.get_or_create(key_prime=company,key_sub=product)
cpe_filter.status = status
cpe_filter.automatic = auto
cpe_filter.save()
if 0 == i % 10:
print('%04d: %20s\r' % (i,company), end='')
# print("[%d]cpe23Uri=%s,%s" % (i,company,product))
def debug_set_cve(self,key,public,vulnerability,wr_comments,wr_comments_private):
try:
c = Cve.objects.get(name=key)
c.public = public
c.wr_comments = wr_comments
c.wr_comments_private = wr_comments_private
c.save()
if vulnerability:
v = Vulnerability.objects.get(name=vulnerability)
cv, created = CveToVulnerablility.objects.get_or_create(vulnerability=v,cve=c)
cv.save()
except ObjectDoesNotExist:
print("Cve %s not found" % key)
def update(self):
"""
Fetches CVE data from the registered data sources
"""
os.system('setterm -cursor off')
logger.info("***LS UPDATES***")
try:
from urllib.request import urlopen, URLError
from urllib.parse import urlparse
except ImportError:
from urllib2 import urlopen, URLError
from urlparse import urlparse
data_sources=DataSource.objects.all()
for source in data_sources:
if source.loaded:
logger.info("Skipping source data from %s",source.file_path)
print("Skipping CVE data for %s (already loaded)" % (source.description))
continue
else:
logger.info("Fetching source data from %s",source.file_path)
print("Fetching source data for '%s'" % (source.description))
file_path = source.file_path
url_path = source.url
dct = None
root = None
content = None
source_doc = None
# prefer the file path before the url
if file_path:
# load the file
source_doc = source.file_path
if not source.file_path.startswith('/'):
file_path = os.path.join(os.getenv('SRT_BASE_DIR'), source.file_path)
source.loaded = True
source.save()
if not os.path.isfile(file_path):
logger.error("Data file not found '%s'" % (file_path))
continue
if 'json' == source.type:
with open(file_path) as json_data:
dct = json.load(json_data)
elif 'xml' == source.type:
tree = ET.parse(file_path)
root = tree.getroot()
elif 'csv' == source.type:
csvfile_name = file_path
else:
with open(file_path) as text_data:
content = text_data.read()
elif url_path:
# load the HTML page
source_doc = source.url
try:
f = urlopen(href)
content = f.read().decode('UTF-8')
f.close()
except URLError as e:
raise Exception("Failed to open %s: %s" % (href, e.reason))
continue
else:
# no data source path to load
logger.error("Unknown data source path for '%s' (%s,%s) " % (source.source.description,source.file_path,source.url))
continue
# testing shortcut
if ('nist' == source.source) and ('yes' == SrtSetting.objects.get(name='TEST_SKIP_NIST_IMPORT').value):
continue
# Common Vulnerabilities and Exposures
if 'cve' == source.data:
if 'nist' == source.source and 'json' == source.type:
self.nist_jason(dct)
source.loaded = True
source.save()
continue
# Common Weakness Enumeration
if 'cwe' == source.data:
if 'nist' == source.source and 'html' == source.type:
self.nist_cwe(content)
source.loaded = True
source.save()
continue
# Common Product Enumeration
if 'cpe' == source.data:
if 'nist' == source.source and 'xml' == source.type:
self.nist_cpe(root)
source.loaded = True
source.save()
continue
if 'nist' == source.source and 'csv' == source.type:
self.nist_cpe_csv(csvfile_name)
source.loaded = True
source.save()
continue
# data source not handled
logger.error("Unknown data source type for '%s' (%s,%s,%s) " % (source.file_path,source.data,source.source,source.type))
# TEST DEBUG
# self.debug_set_cve('CVE-2017-0002',False,'','','')
# self.debug_set_cve('CVE-2017-0010',False,'','','')
self.debug_set_cve('CVE-2017-5753',True,'V0000','Spectre Variant 1: Bounds check bypass','community calling this "spectre"')
self.debug_set_cve('CVE-2017-5715',True,'V0000','Spectre Variant 2: Branch target injection','see if this will required compiler changes')
self.debug_set_cve('CVE-2017-5754',True,'V0000','Meltdown: Rogue data cache load, memory access permission check performed after kernel memory read','mostly for Intel parts')
os.system('setterm -cursor on')
def handle(self, **options):
# testing shortcuts
if 'yes' == SrtSetting.objects.get(name='TEST_MINIMAL_DB').value:
print("TEST: MINIMAL DATABASE LOADING")
Command.debug_cve_count = 10 # 0 for any
Command.debug_include_id_prefix = 'XXX' # always include CVEs with this prefix
Command.status_sustaining_limit = 10
Command.debug_jira_limit = 10
Command.cpe_limit = 10
self.update()
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