definition */Create trigger tr_gradeschanged on grades for delete, insert, updateAsDeclare @ insertedcount intDeclare @ deletedcount intDeclare @ changetype char (10)Declare @ changetime datetimeDeclare @ updatetype char (4)/* There are two temporary tables in ms SQL Server that store deleted and inserted records, respectively "deleted" and "inserted ". Update can be regarded as one deletion and one additi
follows MSSQL performs monitoring, with a performance monitoring tool on SQL Server Profiler, which can be found in the Start menu, and SQL Server Profiler can save SQL execution to files and database tables. It also supports real-time viewing and searching. Let's take a
request, eventually achieves a malicious SQL command that deceives the server. Specifically, it is the ability to inject (malicious) SQL commands into the background database engine execution using existing applications, which can be obtained by entering (malicious) SQL statements in a Web Form to a database on a Web
in order to free the DBA from the daily tedious work, through the SQL self-service platform, can let the development from on-line, the development submits the SQL to automatically return the optimization suggestion, does not need the DBA re-audit, thus enhances the on-line efficiency, facilitates establishes the database development
)Server_audit_logging the definition is open,Server_audit_events defines the relevant eventsCommon audit events have CONNECTION,QUERY,TABLE,QUERY_DDL,QUERY_DMLAssume that you now need to audit query execution.mysql> set global server_audit_events= ' QUERY ';Query OK, 0 rows Affected (0.00 sec)mysql> set global server_audit_logging= ' on ';Query OK, 0 rows Affected (0.00 sec)5. Perform the query operation on
the backstage database), the backup partitions (do the data and the program backup storage use).
3. Turn on the event audit function, the user login, policy changes and procedures for real-time monitoring of the operation, to ensure that the system is damaged in the case can also be documented.
4. For the user data in the background database, set up in SQL Server
Tags: Normal style color apple auditWhat is SQL injectionSQL injection attack (SQL injection), short injection attack, is the most common security vulnerability in Web development. It can be used to obtain sensitive information from the database, or to take advantage of the characteristics of the database to perform a series of malicious operations such as adding users, exporting files, or even obtaining th
0x01 backgroundThe current Web application's protection against SQL injection is basically to determine if the GPC is turned on, and then use the Addlashes function to escape special characters such as single quotes. But the only use of such protection is a lot of blind spots, such as the most classic integer parameter transfer, which is brought into the database query parameters are integer, the key in the array is not filtered into the query and the
[PHP code audit instance tutorial] SQL injection-4. global protection Bypass second injection 0x01 background
Currently, WEB programs basically have global filtering for SQL injection, such as enabling GPC in PHP or common in global files. use the addslashes () function on php to filter the received parameters, especially single quotes. Secondary injection is als
encountered problems please Baidu or Google, after successful visit such as:0X03 Vulnerability Analysis
PART1: Source Structure
The structure of the source code is clear, should be the most clear audit structure, mainly has the following three pieces of content: Index.php introduced the common.inc.php file, we followed common.inc.php, found the function of processing GPC:
if (!$_get)) { $_get = Addslashes_deep ($
study it and continue to look at it. new users can know that ThinkPHP filters the received parameters, and will perform corresponding processing based on whether your server enables GPC:
1. line 3 of the/ThinkPHP/Extend/Library/ORG/Util/Input. class. php file:
/** + ---------------------------------------------------------- * If magic_quotes_gpc is disabled, this function can escape the string + handler * @ access public + handler * @ param string
= addslashes_deep ($_post);}$_cookie = Addslashes_deep ($_cookie);$_request = Addslashes_deep ($_request);?>
As you can see, the server handles the variables for Get and POST requests as addslashes processing.and 74cms to prevent wide-byte injection, set the MySQL connection to binary read, configured in/include/mysql.class.php:
functionConnect($dbhost,$dbuser,$DBPW,$dbname =‘‘,$dbcharset =' GBK ',$connect =1){ $func =
package Change the parameter ID to 1 or 1=1 #, the query succeeds: Indicates that there is a digital injection.(because it is a digital injection, the server-side mysql_real_escape_string function is not the same, because digital injection does not need to use quotation marks.) )2.Guess the solutionSqlnumber of fields in the query statementGrab Package change parameter ID 1 ORDER by 2 #, Query succeeded: Grab Package change parameter ID to 1 order b
[PHP code audit] in those years, we will explore SQL injection together-8. Summary of global protection blind spots. Part 2: background 0x01
Currently, WEB applications usually defend against SQL injection by checking whether GPC is enabled, and then using the addlashes function to escape special characters such as single quotes. But the use of such protection al
encountered problems please Baidu or Google, after successful visit such as:
0X03 Vulnerability Analysis
PART1: Source Structure
The structure of the source code is clear, should be the most clear audit structure, mainly has the following three pieces of content:
Index.php introduced the common.inc.php file, we followed common.inc.php, found the function of processing GPC:
if (!empty ($_get)) {$_get = Addslashes_deep ($_get);} if (!empty ($
[PHP code audit] in those years, we will explore SQL injection together. 7. Summary of global protection blind spots. Part 2: background 0x01
Currently, WEB applications usually defend against SQL injection by checking whether GPC is enabled, and then using the addlashes function to escape special characters such as single quotes. However, there are many blind sp
=$ This-Base->user['UID']; $ This->db->query ("INSERT into". Db_tablepre."Attach (Time,filename,filetype,filesize,location,isimage,uid) VALUES ({$this->base->time}, ' $filename ', ' $ftype ', ' $fsize ', ' $location ', $isimage, $uid)"); return$ This->db->insert_id ();}Upload a file, and then modify the filename to get the Administrator account password by calling the following code:filename="1‘,‘.php‘,1,(select concat(username,0x23,password) from ask_user limit 1),2,1)#.jpg"The Administrator ac
your server open GPC will do the appropriate processing:1./thinkphp/extend/library/org/util/input.class.php file Line No. 266:
/**+----------------------------------------------------------* If MAGIC_QUOTES_GPC is off, this function can escape the string+----------------------------------------------------------*@access Public+----------------------------------------------------------*@param string $string to be processed+----------
whether your server open GPC will do the appropriate processing:1./thinkphp/extend/library/org/util/input.class.php file Line No. 266:
/**+----------------------------------------------------------* If MAGIC_QUOTES_GPC is off, this function can escape the string+----------------------------------------------------------*@access Public+----------------------------------------------------------*@param string $string to be processed+--
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