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engine.py
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# -*- coding: utf-8 -*-
"""
engine
~~~~~~
Implements scan engine
:author: Feei <[email protected]>
:homepage: https://github.com/wufeifei/cobra
:license: MIT, see LICENSE for more details.
:copyright: Copyright (c) 2017 Feei. All rights reserved
"""
import json
import os
import re
import shutil
import asyncio
import traceback
import portalocker
from prettytable import PrettyTable
from core.core_engine.php.parser import scan_parser as php_scan_parser
from core.core_engine.php.engine import init_match_rule as php_init_match_rule
from core.core_engine.javascript.parser import scan_parser as js_scan_parser
from core.core_engine.javascript.engine import init_match_rule as js_init_match_rule
from .rule import Rule
from .cast import CAST
from rules.autorule import autorule
from Kunlun_M import const
from Kunlun_M.settings import RUNNING_PATH
from Kunlun_M.const import ext_dict
from Kunlun_M.const import VulnerabilityResult
from Kunlun_M.const import match_modes
from utils.utils import show_context
from utils.file import FileParseAll, get_line
from utils.log import logger
from utils.status import get_scan_id
from web.index.models import ScanResultTask, NewEvilFunc
from web.index.models import get_resultflow_class, check_update_or_new_scanresult
class Running:
def __init__(self, sid):
self.sid = sid
def init_list(self, data=None):
"""
Initialize asid_list file.
:param data: list or a string
:return:
"""
file_path = os.path.join(RUNNING_PATH, '{sid}_list'.format(sid=self.sid))
if not os.path.exists(file_path):
if isinstance(data, list):
with open(file_path, 'w') as f:
portalocker.lock(f, portalocker.LOCK_EX)
f.write(json.dumps({
'sids': {},
'total_target_num': len(data),
}))
else:
with open(file_path, 'w') as f:
portalocker.lock(f, portalocker.LOCK_EX)
f.write(json.dumps({
'sids': {},
'total_target_num': 1,
}))
def list(self, data=None):
file_path = os.path.join(RUNNING_PATH, '{sid}_list'.format(sid=self.sid))
if data is None:
with open(file_path, 'r') as f:
portalocker.lock(f, portalocker.LOCK_EX)
result = f.readline()
return json.loads(result)
else:
with open(file_path, 'r+') as f:
portalocker.lock(f, portalocker.LOCK_EX)
result = f.read()
if result == '':
result = {'sids': {}}
else:
result = json.loads(result)
result['sids'][data[0]] = data[1]
f.seek(0)
f.truncate()
f.write(json.dumps(result))
def status(self, data=None):
file_path = os.path.join(RUNNING_PATH, '{sid}_status'.format(sid=self.sid))
if data is None:
with open(file_path) as f:
portalocker.lock(f, portalocker.LOCK_EX)
result = f.readline()
return json.loads(result)
else:
data = json.dumps(data)
with open(file_path, 'w') as f:
portalocker.lock(f, portalocker.LOCK_EX)
f.writelines(data)
def data(self, data=None):
file_path = os.path.abspath(RUNNING_PATH + '/{sid}_data'.format(sid=self.sid))
if data is None:
with open(file_path) as f:
portalocker.lock(f, portalocker.LOCK_EX)
result = f.readline()
return json.loads(result)
else:
data = json.dumps(data, sort_keys=True)
with open(file_path, 'w+') as f:
portalocker.lock(f, portalocker.LOCK_EX)
f.writelines(data)
def is_file(self, is_data=False):
if is_data:
ext = 'data'
else:
ext = 'status'
file_path = os.path.join(RUNNING_PATH, '{sid}_{ext}'.format(sid=self.sid, ext=ext))
return os.path.isfile(file_path)
def score2level(score):
level_score = {
'CRITICAL': [9, 10],
'HIGH': [6, 7, 8],
'MEDIUM': [3, 4, 5],
'LOW': [1, 2]
}
score = int(score)
level = None
for l in level_score:
if score in level_score[l]:
level = l
if level is None:
return 'Unknown'
else:
if score < 10:
score_full = '0{s}'.format(s=score)
else:
score_full = score
a = '{s}{e}'.format(s=score * '■', e=(10 - score) * '□')
return '{l}-{s}: {ast}'.format(l=level[:1], s=score_full, ast=a)
def scan_single(target_directory, single_rule, files=None, language=None, tamper_name=None, is_unconfirm=False,
newcore_function_list=[]):
try:
return SingleRule(target_directory, single_rule, files, language, tamper_name, is_unconfirm,
newcore_function_list).process()
except Exception:
raise
def scan(target_directory, a_sid=None, s_sid=None, special_rules=None, language=None, framework=None, file_count=0,
extension_count=0, files=None, tamper_name=None, is_unconfirm=False):
r = Rule(language)
vulnerabilities = r.vulnerabilities
rules = r.rules(special_rules)
find_vulnerabilities = []
newcore_function_list = {}
def store(result):
if result is not None and isinstance(result, list) is True:
for res in result:
res.file_path = res.file_path
find_vulnerabilities.append(res)
else:
logger.debug('[SCAN] [STORE] Not found vulnerabilities on this rule!')
async def start_scan(target_directory, rule, files, language, tamper_name):
result = scan_single(target_directory, rule, files, language, tamper_name, is_unconfirm, newcore_function_list)
store(result)
if len(rules) == 0:
logger.critical('no rules!')
return False
logger.info('[PUSH] {rc} Rules'.format(rc=len(rules)))
push_rules = []
scan_list = []
for idx, single_rule in enumerate(sorted(rules.keys())):
# init rule class
r = getattr(rules[single_rule], single_rule)
rule = r()
if rule.status is False and len(rules) != 1:
logger.info('[CVI_{cvi}] [STATUS] OFF, CONTINUE...'.format(cvi=rule.svid))
continue
# SR(Single Rule)
logger.debug("""[PUSH] [CVI_{cvi}] {idx}.{vulnerability}({language})""".format(
cvi=rule.svid,
idx=idx,
vulnerability=rule.vulnerability,
language=rule.language
))
# result = scan_single(target_directory, rule, files, language, tamper_name)
scan_list.append(start_scan(target_directory, rule, files, language, tamper_name))
# store(result)
loop = asyncio.get_event_loop()
loop.run_until_complete(asyncio.gather(*scan_list))
loop.stop()
# print
data = []
data2 = []
# table = PrettyTable(
# ['#', 'CVI', 'Rule(ID/Name)', 'Lang/CVE-id', 'Target-File:Line-Number',
# 'Commit(Author)', 'Source Code Content', 'Analysis'])
# table.align = 'l'
trigger_rules = []
for idx, x in enumerate(find_vulnerabilities):
trigger = '{fp}:{ln}'.format(fp=x.file_path.replace(target_directory, ""), ln=x.line_number)
commit = u'@{author}'.format(author=x.commit_author)
try:
code_content = x.code_content[:50].strip()
except AttributeError as e:
code_content = x.code_content.decode('utf-8')[:100].strip()
row = [idx + 1, x.id, x.rule_name, x.language, trigger, commit,
code_content.replace('\r\n', ' ').replace('\n', ' '), x.analysis]
row2 = [idx + 1, x.chain]
is_unconfirm_result = False
if "unconfirmed" in x.analysis.lower():
is_unconfirm_result = True
# save to database
sr = check_update_or_new_scanresult(scan_task_id=a_sid, cvi_id=x.id, language=x.language,
vulfile_path=trigger, source_code=code_content.replace('\r\n', ' ').replace('\n', ' '),
result_type=x.analysis, is_unconfirm=is_unconfirm_result, is_active=True)
# sr = ScanResultTask(scan_task_id=a_sid, result_id=idx + 1, cvi_id=x.id, language=x.language,
# vulfile_path=trigger, source_code=code_content.replace('\r\n', ' ').replace('\n', ' '),
# result_type=x.analysis, is_unconfirm=is_unconfirm_result)
#
# sr.save()
# 如果返回false，那么说明漏洞存在，不添加新的
if sr:
for chain in x.chain:
if type(chain) == tuple:
ResultFlow = get_resultflow_class(int(a_sid))
node_source = show_context(chain[2], chain[3], is_back=True)
rf = ResultFlow(vul_id=sr.id, node_type=chain[0], node_content=chain[1],
node_path=chain[2], node_source=node_source, node_lineno=chain[3])
rf.save()
data.append(row)
data2.append(row2)
# table.add_row(row)
# if x.id not in trigger_rules:
# logger.debug(' > trigger rule (CVI-{cvi})'.format(cvi=x.id))
# trigger_rules.append(x.id)
#
# # clear
# x.chain = ""
#
# diff_rules = list(set(push_rules) - set(trigger_rules))
# vn = len(find_vulnerabilities)
# if vn == 0:
# logger.info('[SCAN] Not found vulnerability!')
# else:
# logger.info("[SCAN] Trigger Rules: {tr} Vulnerabilities ({vn})\r\n{table}".format(tr=len(trigger_rules),
# vn=len(find_vulnerabilities),
# table=table))
#
# # 输出chain for all
# logger.info("[SCAN] Vulnerabilities Chain list: ")
# for d in data2:
# logger.info("[SCAN] Vul {}".format(d[0]))
# for c in d[1]:
# logger.info("[Chain] {}".format(c))
# if type(c) is not tuple and not c[3] is None and not re.match('^[0-9]+$', c[3]):
# continue
# show_context(c[2], c[3])
#
# logger.info("[SCAN] ending\r\n" + '-' * (shutil.get_terminal_size().columns - 16))
#
# if len(diff_rules) > 0:
# logger.info(
# '[SCAN] Not Trigger Rules ({l}): {r}'.format(l=len(diff_rules), r=','.join(diff_rules)))
#
# # show detail about newcore function list
# table2 = PrettyTable(
# ['#', 'NewFunction', 'OriginFunction', 'Related Rules id'])
#
# table2.align = 'l'
# idy = 0
for new_function_name in newcore_function_list:
# add new evil func in database
for svid in newcore_function_list[new_function_name]["svid"]:
if new_function_name and newcore_function_list[new_function_name]["origin_func_name"]:
nf = NewEvilFunc(svid=svid, scan_task_id=get_scan_id(), func_name=new_function_name,
origin_func_name=newcore_function_list[new_function_name]["origin_func_name"])
nf.save()
#
# table2.add_row([idy + 1, new_function_name, newcore_function_list[new_function_name]["origin_func_name"], newcore_function_list[new_function_name]["svid"]])
# idy += 1
#
# if len(newcore_function_list) > 0:
# logger.info("[SCAN] New evil Function list by NewCore:\r\n{}".format(table2))
# completed running data
if s_sid is not None:
Running(s_sid).data({
'code': 1001,
'msg': 'scan finished',
'result': {
'vulnerabilities': [x.__dict__ for x in find_vulnerabilities],
'language': ",".join(language),
'framework': framework,
'extension': extension_count,
'file': file_count,
'push_rules': len(rules),
'trigger_rules': len(trigger_rules),
'target_directory': target_directory
}
})
return True
class SingleRule(object):
def __init__(self, target_directory, single_rule, files, language=None, tamper_name=None, is_unconfirm=False,
newcore_function_list=[]):
self.target_directory = target_directory
self.sr = single_rule
self.files = files
self.languages = language
self.lan = self.sr.language.lower()
self.tamper_name = tamper_name
self.is_unconfirm = is_unconfirm
# Single Rule Vulnerabilities
"""
[
vr
]
"""
self.rule_vulnerabilities = []
# new core function list
self.newcore_function_list = newcore_function_list
logger.info("[!] Start scan [CVI-{sr_id}]".format(sr_id=self.sr.svid))
def origin_results(self):
logger.debug('[ENGINE] [ORIGIN] match-mode {m}'.format(m=self.sr.match_mode))
# grep
if self.sr.match_mode == const.mm_regex_only_match:
# 当所有match都满足时成立，当单一unmatch满足时，不成立
matchs = self.sr.match
unmatchs = self.sr.unmatch
result = []
new_result = []
old_result = 0
try:
if matchs:
f = FileParseAll(self.files, self.target_directory, language=self.lan)
for match in matchs:
new_result = f.multi_grep(match)
if old_result == 0:
old_result = new_result
result = new_result
continue
old_result = result
result = []
for old_vul in old_result:
for new_vul in new_result:
if new_vul[0] == old_vul[0]:
result.append(old_vul)
for unmatch in unmatchs:
uresults = f.multi_grep(unmatch)
for uresult in uresults:
for vul in result:
if vul[0] == uresult[0]:
result.remove(vul)
else:
result = None
except Exception as e:
traceback.print_exc()
logger.debug('match exception ({e})'.format(e=e))
return None
elif self.sr.match_mode == const.mm_regex_param_controllable:
# 自定义匹配，调用脚本中的匹配函数匹配参数
match = self.sr.match
try:
if match:
f = FileParseAll(self.files, self.target_directory, language=self.lan)
result = f.grep(match)
else:
result = None
except Exception as e:
traceback.print_exc()
logger.debug('match exception ({e})'.format(e=e))
return None
elif self.sr.match_mode == const.mm_function_param_controllable:
# 函数匹配，直接匹配敏感函数，然后处理敏感函数的参数即可
# param controllable
if '|' in self.sr.match:
match = const.fpc_multi.replace('[f]', self.sr.match)
if self.sr.keyword == 'is_echo_statement':
match = const.fpc_echo_statement_multi.replace('[f]', self.sr.match)
else:
match = const.fpc_single.replace('[f]', self.sr.match)
if self.sr.keyword == 'is_echo_statement':
match = const.fpc_echo_statement_single.replace('[f]', self.sr.match)
# 垃圾js毁一生，动态类型一时爽，静态分析火葬厂
if self.sr.language.lower() == "javascript":
match = const.fpc_loose.replace('[f]', self.sr.match)
try:
if match:
f = FileParseAll(self.files, self.target_directory, language=self.lan)
result = f.grep(match)
else:
result = None
except Exception as e:
traceback.print_exc()
logger.debug('match exception ({e})'.format(e=e))
return None
elif self.sr.match_mode == const.mm_regex_return_regex:
# 回馈式正则匹配，将匹配到的内容返回，然后合入正则表达式
matchs = self.sr.match
unmatchs = self.sr.unmatch
matchs_name = self.sr.match_name
black_list = self.sr.black_list
result = []
try:
f = FileParseAll(self.files, self.target_directory, language=self.lan)
result = f.multi_grep_name(matchs, unmatchs, matchs_name, black_list)
if not result:
result = None
except Exception as e:
traceback.print_exc()
logger.debug('match exception ({e})'.format(e=e))
return None
elif self.sr.match_mode == const.sp_crx_keyword_match:
# 针对crx研究的keyword匹配，先以sp crx作为入口，逐渐思考普适性
keyword = self.sr.keyword
match = self.sr.match
unmatch = self.sr.unmatch
result = []
try:
f = FileParseAll(self.files, self.target_directory, language=self.lan)
result = f.special_crx_keyword_match(keyword, match, unmatch)
if not result:
result = None
except Exception as e:
traceback.print_exc()
logger.debug('match exception ({e})'.format(e=e))
return None
elif self.sr.match_mode == const.file_path_regex_match:
# 针对敏感文件名的匹配检查
match = self.sr.match
result = []
try:
f = FileParseAll(self.files, self.target_directory, language=self.lan)
result = f.find_keyword_file_or_path(match)
if not result:
result = None
except Exception as e:
traceback.print_exc()
logger.debug('match exception ({e})'.format(e=e))
return None
else:
logger.warning('Exception match mode: {m}'.format(m=self.sr.match_mode))
result = None
try:
result = result.decode('utf-8')
except AttributeError as e:
pass
return result
def process(self):
"""
Process Single Rule
:return: SRV(Single Rule Vulnerabilities)
"""
origin_results = self.origin_results()
# exists result
if origin_results == '' or origin_results is None:
logger.debug('[CVI-{cvi}] [ORIGIN] NOT FOUND!'.format(cvi=self.sr.svid))
return None
origin_vulnerabilities = origin_results
for index, origin_vulnerability in enumerate(origin_vulnerabilities):
logger.debug(
'[CVI-{cvi}] [ORIGIN] {line}'.format(cvi=self.sr.svid, line=": ".join(list(origin_vulnerability))))
if origin_vulnerability == ():
logger.debug(' > continue...')
continue
vulnerability = self.parse_match(origin_vulnerability)
if vulnerability is None:
logger.debug('Not vulnerability, continue...')
continue
is_test = False
try:
datas = Core(self.target_directory, vulnerability, self.sr, 'project name',
['whitelist1', 'whitelist2'], test=is_test, index=index,
files=self.files, languages=self.languages, tamper_name=self.tamper_name,
is_unconfirm=self.is_unconfirm).scan()
data = ""
if len(datas) == 3:
is_vulnerability, reason, data = datas
if "New Core" not in reason:
code = "Code: {}".format(origin_vulnerability[2].strip(" "))
file_path = os.path.normpath(origin_vulnerability[0])
data.insert(1, ("NewScan", code, origin_vulnerability[0], origin_vulnerability[1]))
elif len(datas) == 2:
is_vulnerability, reason = datas
else:
is_vulnerability, reason = False, "Unpack error"
if is_vulnerability:
logger.debug('[CVI-{cvi}] [RET] Found {code}'.format(cvi=self.sr.svid, code=reason))
vulnerability.analysis = reason
vulnerability.chain = data
self.rule_vulnerabilities.append(vulnerability)
else:
if reason == 'New Core': # 新的规则
logger.debug('[CVI-{cvi}] [NEW-VUL] New Rules init'.format(cvi=self.sr.svid))
new_rule_vulnerabilities = NewCore(self.sr, self.target_directory, data, self.files, 0,
languages=self.languages, tamper_name=self.tamper_name,
is_unconfirm=self.is_unconfirm,
newcore_function_list=self.newcore_function_list)
if len(new_rule_vulnerabilities) > 0:
self.rule_vulnerabilities.extend(new_rule_vulnerabilities)
else:
logger.debug('Not vulnerability: {code}'.format(code=reason))
except Exception:
raise
logger.debug('[CVI-{cvi}] {vn} Vulnerabilities: {count}'.format(cvi=self.sr.svid, vn=self.sr.vulnerability,
count=len(self.rule_vulnerabilities)))
return self.rule_vulnerabilities
def parse_match(self, single_match):
mr = VulnerabilityResult()
# grep result
#
# Rules
#
# (u'D:\\program\\core-w\\tests\\vulnerabilities/v.php', 10, 'echo($callback . ";");\n')
try:
mr.line_number = single_match[1]
mr.code_content = single_match[2]
mr.file_path = single_match[0]
except Exception:
logger.warning('[ENGINE] match line parse exception')
mr.file_path = ''
mr.code_content = ''
mr.line_number = 0
# vulnerability information
mr.rule_name = self.sr.vulnerability
mr.id = self.sr.svid
mr.language = self.sr.language
mr.commit_author = self.sr.author
return mr
class Core(object):
def __init__(self, target_directory, vulnerability_result, single_rule, project_name, white_list, test=False,
index=0, files=None, languages=None, tamper_name=None, is_unconfirm=False):
"""
Initialize
:param: target_directory:
:param: vulnerability_result:
:param single_rule: rule class
:param project_name: project name
:param white_list: white-list
:param test: is test
:param index: vulnerability index
:param files: core file list
:param tamper_name: tamper name
"""
self.data = []
self.repair_dict = {}
self.repair_functions = []
self.controlled_list = []
self.target_directory = os.path.normpath(target_directory)
self.file_path = vulnerability_result.file_path.strip()
self.line_number = vulnerability_result.line_number
# self.code_content = vulnerability_result.code_content.strip()
self.code_content = vulnerability_result.code_content
self.files = files
self.languages = languages
self.tamper_name = tamper_name
self.rule_match = single_rule.match
self.rule_match_mode = single_rule.match_mode
self.vul_function = single_rule.vul_function
self.cvi = single_rule.svid
self.lan = single_rule.language.lower()
self.single_rule = single_rule
self.is_unconfirm = is_unconfirm
self.project_name = project_name
self.white_list = white_list
self.test = test
self.status = None
self.status_init = 0
self.status_fixed = 2
# const.py
self.repair_code = None
self.repair_code_init = 0
self.repair_code_fixed = 1
self.repair_code_not_exist_file = 4000
self.repair_code_special_file = 4001
self.repair_code_whitelist = 4002
self.repair_code_test_file = 4003
self.repair_code_annotation = 4004
self.repair_code_modify = 4005
self.repair_code_empty_code = 4006
self.repair_code_const_file = 4007
self.repair_code_third_party = 4008
self.method = None
logger.debug("""[CVI-{cvi}] [VERIFY-VULNERABILITY] ({index})
> File: `{file}:{line}`
> Code: `{code}`""".format(
cvi=single_rule.svid,
index=index,
file=self.file_path,
line=self.line_number,
code=self.code_content))
def is_white_list(self):
"""
Is white-list file
:return: boolean
"""
target_directory = self.target_directory.replace('\\','/')
file_path = self.file_path.replace('\\','/')
return file_path.split(target_directory, 1)[-1] in self.white_list
def is_special_file(self):
"""
Is special file
:method: According to the file name to determine whether the special file
:return: boolean
"""
special_paths = [
'/node_modules/',
'/bower_components/',
'.min.js',
'jquery',
]
for path in special_paths:
if path in self.file_path:
return True
return False
def is_test_file(self):
"""
Is test case file
:method: file name
:return: boolean
"""
test_paths = [
'/test/',
'/tests/',
'/unitTests/'
]
for path in test_paths:
if path in self.file_path:
return True
return False
def is_match_only_rule(self):
"""
Whether only match the rules, do not parameter controllable processing
:method: It is determined by judging whether the left and right sides of the regex_location are brackets
:return: boolean
"""
if self.rule_match_mode == 'regex-only-match':
return True
else:
return False
def is_annotation(self):
"""
Is annotation
:method: Judgment by matching comment symbols (skipped when self.is_match_only_rule condition is met)
- PHP: `#` `//` `\*` `*`
//asdfasdf
\*asdfasdf
#asdfasdf
*asdfasdf
- Java:
:return: boolean
"""
match_result = re.findall(r"^(#|\\\*|\/\/)+", self.code_content)
# Skip detection only on match
if self.is_match_only_rule():
return False
else:
return len(match_result) > 0
def is_can_parse(self):
"""
Whether to parse the parameter is controllable operation
:return:
"""
for language in CAST.languages:
if self.file_path[-len(language):].lower() == language:
return True
return False
def is_target(self):
"""
try to find ext for target file and check it wheater target or not
:return:
"""
# get ext for file
fileext = "." + self.file_path.split(".")[-1]
if self.lan in ext_dict and fileext is not None:
if fileext in ext_dict[self.lan]:
return True
return False
def init_php_repair(self):
"""
初始化修复函数规则
:return:
"""
if self.lan == "php":
a = __import__('rules.tamper.demo', fromlist=['PHP_IS_REPAIR_DEFAULT'])
self.repair_dict = getattr(a, 'PHP_IS_REPAIR_DEFAULT')
b = __import__('rules.tamper.demo', fromlist=['PHP_IS_CONTROLLED_DEFAULT'])
self.controlled_list = getattr(b, 'PHP_IS_CONTROLLED_DEFAULT')
# 如果指定加载某个tamper，那么无视语言
if self.tamper_name is not None:
try:
# 首先加载修复函数指定
a = __import__('rules.tamper.' + self.tamper_name, fromlist=[self.tamper_name])
a = getattr(a, self.tamper_name)
self.repair_dict = self.repair_dict.copy()
self.repair_dict.update(a.items())
# 然后加载输入函数
b = __import__('rules.tamper.' + self.tamper_name, fromlist=[self.tamper_name + "_controlled"])
b = getattr(b, self.tamper_name + "_controlled")
self.controlled_list += b
except ImportError:
logger.warning('[AST][INIT] tamper_name init error... No module named {}'.format(self.tamper_name))
# init
for key in self.repair_dict:
if self.single_rule.svid in self.repair_dict[key]:
self.repair_functions.append(key)
def scan(self):
"""
Scan vulnerabilities
:flow:
- whitelist file
- special file
- test file
- annotation
- rule
:return: is_vulnerability, code
"""
self.method = 0
self.code_content = self.code_content
if len(self.code_content) > 512:
self.code_content = self.code_content[:500]
self.status = self.status_init
self.repair_code = self.repair_code_init
if self.is_white_list():
logger.debug("[RET] Whitelist")
return False, 'Whitelists(白名单)'
if self.is_special_file():
logger.debug("[RET] Special File")
return False, 'Special File(特殊文件)'
if self.is_test_file():
logger.debug("[CORE] Test File")
if self.is_annotation():
logger.debug("[RET] Annotation")
return False, 'Annotation(注释)'
# if not self.is_target():
# logger.warn("[SCAN] file {} ext is not support, something error...".format(self.file_path))
# return False, 'Unsupport File'
#
# function-param-regex
# Match(function) -> Param-Controllable -> Repair -> Done
#
#
# vustomize-match
# Match(function) -> vustomize-match() -> Param-Controllable -> Repair -> Done
#
logger.debug('[CVI-{cvi}] match-mode {mm}'.format(cvi=self.cvi, mm=self.rule_match_mode))
# if self.file_path[-3:].lower() == 'php':
if self.lan == "php":
try:
self.init_php_repair()
ast = CAST(self.rule_match, self.target_directory, self.file_path, self.line_number,
self.code_content, files=self.files, rule_class=self.single_rule,
repair_functions=self.repair_functions, controlled_params=self.controlled_list)
# only match
if self.rule_match_mode == const.mm_regex_only_match:
#
# Regex-Only-Match
# Match(regex) -> Repair -> Done
#
logger.debug("[CVI-{cvi}] [ONLY-MATCH]".format(cvi=self.cvi))
return True, 'Regex-only-match'
# Match for function-param-regex
if self.rule_match_mode == const.mm_function_param_controllable:
rule_match = self.rule_match.strip('()').split('|')
logger.debug('[RULE_MATCH] {r}'.format(r=rule_match))
try:
# with open(self.file_path, 'r') as fi:
# fi = codecs.open(self.file_path, "r", encoding='utf-8', errors='ignore')
# code_contents = fi.read()
result = php_scan_parser(rule_match, self.line_number, self.file_path,
repair_functions=self.repair_functions,
controlled_params=self.controlled_list, svid=self.cvi)
logger.debug('[AST] [RET] {c}'.format(c=result))
if len(result) > 0:
result_code_list = []
for r in result:
result_code_list.append(r['code'])
if r['code'] == 1: # 函数参数可控
return True, 'Function-param-controllable', r['chain']
for r in result:
if r['code'] == 4: # 新规则生成
return False, 'New Core', r['source']
for r in result:
if r['code'] == 3: # 疑似漏洞
if self.is_unconfirm:
return True, 'Unconfirmed Function-param-controllable', r['chain']
else:
return False, 'Unconfirmed Function-param-controllable', r['chain']
elif r['code'] == 2: # 漏洞修复
return False, 'Function-param-controllable but fixed', r['chain']
else: # 函数参数不可控
return False, 'Function-param-uncon', r['chain']
logger.debug('[AST] [CODE] {code}'.format(code=result_code_list))
else:
logger.debug(
'[AST] Parser failed / vulnerability parameter is not controllable {r}'.format(
r=result))
return False, 'Can\'t parser'
except Exception:
exc_msg = traceback.format_exc()
logger.warning(exc_msg)
raise
# vustomize-match
param_is_controllable, code, data, chain = ast.is_controllable_param()
if param_is_controllable:
logger.debug('[CVI-{cvi}] [PARAM-CONTROLLABLE] Param is controllable'.format(cvi=self.cvi))
if code == 1:
return True, 'Vustomize-Match', chain
elif code == 3:
if self.is_unconfirm:
return True, 'Unconfirmed Vustomize-Match', chain
else:
return False, 'Unconfirmed Vustomize-Match', chain
else:
if type(data) is tuple:
if int(data[0]) == 4:
return False, 'New Core', data[1]
logger.debug('[CVI-{cvi}] [PARAM-CONTROLLABLE] Param Not Controllable'.format(cvi=self.cvi))
return False, 'Param-Not-Controllable'
except Exception as e:
logger.debug(traceback.format_exc())
return False, 'Exception'
# elif self.file_path[-3:].lower() == 'sol':
elif self.lan == "solidity":
try:
ast = CAST(self.rule_match, self.target_directory, self.file_path, self.line_number,
self.code_content, files=self.files, rule_class=self.single_rule,
repair_functions=self.repair_functions)
# only match
if self.rule_match_mode == const.mm_regex_only_match:
#
# Regex-Only-Match
# Match(regex) -> Repair -> Done
#
logger.debug("[CVI-{cvi}] [ONLY-MATCH]".format(cvi=self.cvi))
return True, 'Regex-only-match'
elif self.rule_match_mode == const.mm_regex_return_regex:
logger.debug("[CVI-{cvi}] [REGEX-RETURN-REGEX]".format(cvi=self.cvi))
return True, 'Regex-return-regex'
else:
logger.warn(
"[CVI-{cvi} [OTHER-MATCH]] sol rules only support for Regex-only-match and Regex-return-regex...".format(
cvi=self.cvi))
return False, 'Unsupport Match'
except Exception as e:
logger.debug(traceback.format_exc())
return False, 'Exception'
# elif self.file_path[-3:].lower() == '.js':
elif self.lan == "javascript":
try:
ast = CAST(self.rule_match, self.target_directory, self.file_path, self.line_number,
self.code_content, files=self.files, rule_class=self.single_rule,
repair_functions=self.repair_functions)
# only match
if self.rule_match_mode == const.mm_regex_only_match:
#
# Regex-Only-Match
# Match(regex) -> Repair -> Done
#
logger.debug("[CVI-{cvi}] [ONLY-MATCH]".format(cvi=self.cvi))
return True, 'Regex-only-match'
elif self.rule_match_mode == const.mm_regex_return_regex: