sql-injection

I'm aware that SQL injection is rather dangerous . Now in my C# code I compose parameterized queries with SqlCommand class : SqlCommand command = ...; command.CommandText = "SELECT * FROM Jobs WHERE JobId = @JobId;"; command.Parameters.Add("@JobId", SqlDbType.UniqueIdentifier ).Value = actualGuid; command.ExecuteNonQuery(); Will this automatically make my code immune to SQL injection? Do I have to do something extra? I'd say for your particular, and probably canonical, example for parametrized queries, yes it is sufficient. However, people sometimes write code like this cmd.CommandText =

This question already has an answer here: How does a PreparedStatement avoid or prevent SQL injection? 9 answers I have read and tried to inject vulnerable sql queries to my application. It is not safe enough. I am simply using the Statement Connection for database validations and other insertion operations. Is the preparedStatements safe? and moreover will there be any problem with this statement too? Using string concatenation for constructing your query from arbitrary input will not make PreparedStatement safe. Take a look at this example: preparedStatement = "SELECT * FROM users WHERE name

I have the following code, using pscyopg2: sql = 'select %s from %s where utctime > %s and utctime < %s order by utctime asc;' data = (dataItems, voyage, dateRangeLower, dateRangeUpper) rows = cur.mogrify(sql, data) This outputs: select 'waterTemp, airTemp, utctime' from 'ss2012_t02' where utctime > '2012-05-03T17:01:35+00:00'::timestamptz and utctime < '2012-05-01T17:01:35+00:00'::timestamptz order by utctime asc; When I execute this, it falls over - this is understandable, as the quotes around the table name are illegal. Is there a way to legally pass the table name as a parameter, or do I

I have some queries (to an acccess database) like this : string comando = "SELECT * FROM ANAGRAFICA WHERE E_MAIL='" + user + "' AND PASSWORD_AZIENDA='" + password + "'"; and I'd like to "escape" user and password, preventing an injection. How can I do it with C# and .NET 3.5? I'm searching somethings like mysql_escape_string on PHP... You need to use parameters. Well dont have to but would be preferable. SqlParameter[] myparm = new SqlParameter[2]; myparm[0] = new SqlParameter("@User",user); myparm[1] = new SqlParameter("@Pass",password); string comando = "SELECT * FROM ANAGRAFICA WHERE E_MAIL

Why do we need a DB-specific functions like mysql_real_escape_string()? What can it do that addslashes() doesn't? Ignoring for the moment the superior alternative of parameterized queries, is a webapp that uses addslashes() exclusively still vulnerable to SQL injection, and if yes, how? Addslashes is generally not good enough when dealing with multibyte encoded strings. It adds slashes to: \x00, \n, \r, \, ', " and \x1a. characters. Where addslashes only adds slashes to ' \ and NUL Ilias article is also pretty detailed on its functionality gs's harshly downvoted answer is actually kinda right.

On http://www.justinshattuck.com/2007/01/18/mysql-injection-cheat-sheet/?akst_action=share-this , there is a section that claims you can bypass mysql_real_escape_string with certain Asian character encodings Bypassing mysql_real_escape_string() with BIG5 or GBK "injection string" に関する追加情報： the above chars are Chinese Big5 Is this really true? And if so, how would you protect your website against this, if you had no access to prepared statements? According to Stefan Esser, " mysql_real_escape_string() [is] not safe when SET NAMES is used." His explanation, from his blog : SET NAMES is usually