sql-injection

Since there are so many valid characters for email addresses, are there any valid email addresses that can in themselves be XSS attacks or SQL injections? I couldn't find any information on this on the web. The local-part of the e-mail address may use any of these ASCII characters: Uppercase and lowercase English letters (a–z, A–Z) Digits 0 to 9 Characters ! # $ % & ' * + - / = ? ^ _ ` { | } ~ Character . (dot, period, full stop) provided that it is not the last character, and provided also that it does not appear two or more times consecutively (e.g. John..Doe@example.com). http://en

For performance reasons, I need to write a new method in my Rails model that executes some arbitrary SQL: UPDATE table SET col1 = ? AND col2 = ? WHERE id = ? I understand I can use ActiveRecord::Base.connection.execute or ActiveRecord::Base.connection.update with a string of SQL to get the results I need, but what is the proper procedure for substituting the parameter placeholders ( ? ) with the actual parameter values? Is there a Rails method for interpolating parameters into a SQL statement, or should it just be done by manual interpolation? The latter seems unsafe... You could also do this:

This question already has answers here : Closed 5 years ago . Avoiding SQL injection without parameters (21 answers) If I change my select from String insSQL2 = "select * from Produtos where nome = '" + txtBuscaNome.Text + "'" To String insSQL2 = "select * from Produtos where nome = ''" + txtBuscaNome.Text + "''" Will it prevent sql injection? No. SQL injection isn't about creatively using quote characters. It's about treating input as data instead of as code . Take a look at a classic SQL injection vulnerability: "SELECT * FROM Users WHERE Id = " + someValue; It may intuitively look like you

I want to know about SQL injection. So, please help me. Lots of information about SQL Injection on wikipedia, and xkcd has a very good example as well. In general, if your application is using a SQL database, a SQL Injection attack is an attempt to use your program to pass dangerous values to the SQL database. The best preventative measures are to never construct SQL strings without cleaning them up - the best way to do this is to use parameterized queries and widely used data access libraries. Start here: google "sql injection" . You will see that there is plenty to read about it. If you want

I was reading about the second order MySQL injection on this page Are PDO prepared statements sufficient to prevent SQL injection? . and it brought many questions about the charset , and I am not sure if my code is safe to MySQL injection In my code, I never use charset while making a query, I simply do $pdo = new PDO("mysql:host=" . DB_HOST . ";dbname=" . DB_NAME, DB_USER, DB_PASSWORD, [PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC, PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION, PDO::ATTR_EMULATE_PREPARES => false, PDO::ATTR_PERSISTENT => false]); $stmt = $pdo->prepare("SELECT * FROM

I am in a very big trouble. Please help!!!!!!!!!! My website has been attacked by some malicious script < / title> < script src = http : // google-stats50.info/ur.php >. This script is appended to any column(s) of some table automatically. I have removed this script. But after a few hours, it re-appeared in some tables. But this time it is < / title> < script src = http : // google-stats49.info/ur.php >. My client is complaining about the script. Technology used is ASP.NET 1.1, SQL SERVER 2005. Please help. Thanks in advance!!!!!! When you render the text from the database you can use two ways