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ERO!

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Honestly, i dont get it

 

In SQL, commands are separated by semicolons ; and data is often quoted using single quotes '. Commands may also be enclosed in parentheses( and ). Data is stored in tables of similar items (e.g. students) and individual entries are "rows" in the table. To delete an entire table (and every row of data in that table), you use the commandDROP (e.g. DROP TABLE students). The -- represents the start of a SQL comment which ensures that the rest of the command is ignored so an error will not occur.

The exploited vulnerability is that the single quote in the name input was not properly "escaped" by the software. Thus, when the name is embedded into some SQL statement, the quote is erroneously parsed as a closing quote inside that statement, rather than being parsed as part of the name. Lack of such escaping is a common SQL vulnerability; this type of exploit is referred to as SQL injection.

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