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fix for DNS leakage

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This commit is contained in:
Miroslav Stampar 2011-06-17 15:23:58 +00:00
parent 9498a3f259
commit bb987ec98f
1 changed files with 18 additions and 1 deletions
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19
lib/core/option.py
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@ -80,6 +80,7 @@ from lib.core.optiondict import optDict
from lib.core.settings import CODECS_LIST_PAGE
from lib.core.settings import DEFAULT_PAGE_ENCODING
from lib.core.settings import DEFAULT_TOR_PORTS
from lib.core.settings import GENERAL_IP_ADDRESS_REGEX
from lib.core.settings import IS_WIN
from lib.core.settings import PLATFORM
from lib.core.settings import PYVERSION
@ -829,8 +830,12 @@ def __setDNSCache():
"""
def _getaddrinfo(*args, **kwargs):
if args in kb.cache:
if conf.proxyDNSResponse:
return conf.proxyDNSResponse
elif args in kb.cache:
return kb.cache[args]
else:
kb.cache[args] = socket._getaddrinfo(*args, **kwargs)
return kb.cache[args]
@ -897,6 +902,17 @@ def __setHTTPProxy():
else:
proxyHandler = urllib2.ProxyHandler({"http": __proxyString})
# Patch for DNS leakage
if conf.proxy:
if not re.match(GENERAL_IP_ADDRESS_REGEX, __hostname):
try:
addrinfo = socket.getaddrinfo(__hostname, __port)
except:
errMsg = "proxy host '%s' does not exist" % __hostname
raise sqlmapConnectionException, errMsg
__hostname = addrinfo[0][4][0]
conf.proxyDNSResponse = [(2, 1, 0, '', (__hostname, int(__port)))]
def __setSafeUrl():
"""
Check and set the safe URL options.
@ -1323,6 +1339,7 @@ def __setConfAttributes():
conf.parameters = {}
conf.path = None
conf.port = None
conf.proxyDNSResponse = None
conf.resultsFilename = None
conf.resultsFP = None
conf.scheme = None