sql-injection

问题 I have found one my demo website is vulnerable to SQL INJECTION (me currently doing CEH) Discovered injection point is as follows: SELECT column_1,column_2,column_3 from table_1 where column_4='3' order by id [*INJECTION POINT FOUND HERE*] Now i need to craft something which could help me exploit this injection point that i have discovered. As far as I know UNION SELECT wont work after ORDER BY . However, I do think that blind sql injection may work as illustrated below SELECT column_1,column

问题 I'm in the process of adding password hashing and SQL injection defenses into my Login system. Currently, I've ran into an error. <?php session_start(); //start the session for user profile page define('DB_HOST','localhost'); define('DB_NAME','test'); //name of database define('DB_USER','root'); //mysql user define('DB_PASSWORD',''); //mysql password $con = new PDO('mysql:host=localhost;dbname=test','root',''); function SignIn($con){ $user = $_POST['user']; //user input field from html $pass

问题 I don't know how to avoid SQL injection, could someone help me with my problem? Here is my current code: Private Function INSERT() As String Dim SQLcon As New SqlConnection Dim SQLdr As SqlDataReader Try SQLcon.ConnectionString = "Data Source=#####;Initial Catalog=OJT;Persist Security Info=True;User ID=####;Password=#####" Dim SQLcmd As New SqlCommand("INSERT INTO dbo.Patients(pIDNo,pLName,pFName,pMI,pSex,pStatus,pTelNo,pDocID,pAddr,pStreet,pBarangay,pCity,pProvince,pLNameKIN,pFNameKIN,pMIKIN

问题 what is the best way to escape a Search String from an input field to prevent SQLInjections? Is there an mysql_real_escape_string method like in PHP or should i manually replace/escape the different characters like: OR, AND, LIKE, WHERE, DELETE, INSERT, UPDATE, FROM, GROUP BY, ORDER BY and so on? 回答1: closed with the answer from: @Nick Weaver: I don't think that you have to take care about that. 回答2: Using mysql_real_escape_string for a search query is a good option. However you need to be

问题 Hi I have the following query which is part of a java class. I just want to know what are the possible attacks possible with the SQL Injection. How an attacker can inject queries? What are sample queries in this case that can be used to gain access to the database? String query = ("SELECT username, password, admin FROM users WHERE " + "username='" + username + "' AND password='" + password + "'"); ResultSet rs = st.executeQuery(query); // Entry in the result set means the query was successful

问题 I am using mysql and trying to block unwanted queries injection of people who will try to use my single query to run several ones. ie, for example when i have the parameter "?id=3", people can try to run it with ="id=3;drop table users" Now, i know that the best way to avoid this is by parsing and checking the parameter, but is there a way to change the concatenated queries delimiter from ";" to something like "%^#$%@#$^$"? 回答1: The statement DELIMITER configuration is a built-in command only

问题 I've been reading articles about SQL Injection, and decided to modify my code to prevent SQL injection. For example, I have an input which I insert the value to my database. Initially, my guard against injection was this: function test_input($data) { $data = trim($data); $data = stripslashes($data); $data = htmlspecialchars($data); // $data = addslashes($data); $data = mysql_real_escape_string($data); return $data; } $artist = $_POST["artist"]; // can be anything $artist = test_input($artist)

问题 I'd like to know if it's possible to execute more than one SQL statement within a single execute() or do() call using DBD::Oracle via Perl DBI. Example: # Multiple SQL statements in a single query, separated by a ";" $sql = 'UPDATE foo SET bar = 123; DELETE FROM foo WHERE baz = 456'; $sth = $dbh->prepare($sql); $sth->execute; # ...or... $dbh->do($sql); I ask this not because I want to actually do such a thing, but rather because I want to gauge the damage possible through a successful SQL

问题 What do I need to add, if I need to at all, to avoid sql injections? public static Login GetLoginByName(string name) { var context=new telephonyEntities1(); Login t = (from l in context.Logins where l.login1==name select l).FirstOrDefault(); return t; } 回答1: Linq-to-sql uses SqlParameter to generate SQL queries, so no you do not need to do anything extra. From Frequently Asked Questions (LINQ to SQL) Q. How is LINQ to SQL protected from SQL-injection attacks? A. SQL injection has been a

问题 in the mysqli php library, in the bind_param() method one binds the parameters to the query. bind_param() 's first argument is types , a string where each character represents the datatype pass, eg, 's' for string. $query = "update users set update_usr_id = ? where user_id = ?"; $arg1 = ($update_usr_id=$usr_id) ? '2011-01-01' : 'CURRENT_DATE'; $arg2 = $update_usr_id; how can one represent NULL or CURRENT_DATE as a parameter? for example, tried 'CURRENT_DATE' as string, but that posted as