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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).
It was introduced to help newcomers write functioning SQL commands without requiring manual escaping. It was later described as intended to prevent inexperienced developers from writing code that was vulnerable to SQL injection attacks. This feature was officially deprecated as of PHP 5.3.0 and removed in PHP 5.4, due to security concerns. [1]
For instance, in PHP, using the htmlspecialchars() function to escape special characters for safe output of text in HTML and the mysqli::real_escape_string() function to isolate data which will be included in an SQL request can protect against SQL injection. Encoding output, which can be used to prevent XSS attacks against website visitors.
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 ]
Once it finds a potential target the botnet performs a SQL injection on the website, inserting an IFrame which redirects the user visiting the site to a site hosting Malware. [4] [6] The botnet usually attacks in waves – the goal of each wave is to infect as many websites as possible, thus achieving the highest possible spread rate. Once a ...
SQL injection; Vulnerabilities in applications and services (e.g. web server software such as NGINX or content management system applications such as WordPress); [7] [8] File processing and uploading vulnerabilities, which can be mitigated by e.g. limiting the file types that can be uploaded; [8]
The attack specifically targeted Yahoo Voice, formerly known as Associated Content, which Yahoo had acquired in May 2010 for $100 million (£64.5 million). Using SQL injection techniques, the hackers were able to extract the data from Yahoo's servers and subsequently post the compromised information publicly online.
On its own, an arbitrary code execution exploit will give the attacker the same privileges as the target process that is vulnerable. [11] For example, if exploiting a flaw in a web browser, an attacker could act as the user, performing actions such as modifying personal computer files or accessing banking information, but would not be able to perform system-level actions (unless the user in ...