19 lines
617 B
Markdown
19 lines
617 B
Markdown
|
|
## Retrieving Data from Other Database Tables
|
|
|
|
In cases where the results of an SQL query are returned within the application's responses, an
|
|
attacker can leverage an SQL injection vulnerability to retrieve data from other tables within the
|
|
database. This is done using the UNION keyword, which lets you execute an additional SELECT
|
|
query and append the results to the original query.
|
|
|
|
User Query
|
|
```
|
|
SELECT name, description FROM products WHERE category = 'Gifts'
|
|
```
|
|
|
|
Attacker Query
|
|
```
|
|
' UNION SELECT username, password FROM users--
|
|
```
|
|
|
|
Cause the application to return all usernames & passwords |