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A classification of SQL injection attacking vector as of 2010. In computing, SQL injection is a code injection technique used to attack data-driven applications, in which malicious SQL statements are inserted into an entry field for execution (e.g. to dump the database contents to the attacker).
Major DBMSs, including SQLite, [5] MySQL, [6] Oracle, [7] IBM Db2, [8] Microsoft SQL Server [9] and PostgreSQL [10] support prepared statements. Prepared statements are normally executed through a non-SQL binary protocol for efficiency and protection from SQL injection, but with some DBMSs such as MySQL prepared statements are also available using a SQL syntax for debugging purposes.
The cryptographic features are available as functions inside the database as well. SSL / TLS connections are supported in the client–server mode, as well as when using the console application. [citation needed] The database supports protection against SQL injection by enforcing the use of parameterized statements. In H2, this feature is ...
An SQL injection takes advantage of SQL syntax to inject malicious commands that can read or modify a database or compromise the meaning of the original query. [13] For example, consider a web page that has two text fields which allow users to enter a username and a password.
It is common for a web application to store in a database the hash value of a user's password. Without a salt, a successful SQL injection attack may yield easily crackable passwords. Because many users re-use passwords for multiple sites, the use of a salt is an important component of overall web application security. [14]
Oracle is combating legacy problems, such as old source code written without addressing concerns of SQL injection and privilege escalation, resulting in many security vulnerabilities which have taken time to fix and also generated incomplete fixes.
The attacker then leaked the full list of the 32 million passwords (with no other identifiable information) to the internet. Passwords were stored in cleartext in the database and were extracted through an SQL injection vulnerability. The Imperva Application Defense Center (ADC) did an analysis on the strength of the passwords. [22]
Hold claimed the hack was perpetrated through the use of an SQL injection. [ 7 ] [ 8 ] According to a Forbes article, Hold Security said that not all the 1.2 billion credentials were stolen this way, as there were also ones that CyberVor simply bought from people that used other means, and Hold Security didn't know what the split is.