| Package | Affected versions | Patched versions |
|---|---|---|
| sequelize | ≤ 3.19.3 | |
| sequelize | < 3.20.0 | 3.20.0 |
Affected versions of sequelize cast arrays to strings and fail to properly escape the resulting SQL statement, resulting in a SQL injection vulnerability.
In Postgres, SQLite, and Microsoft SQL Server there is an issue where arrays are treated as strings and improperly escaped.
Example Query:
database.query('SELECT * FROM TestTable WHERE Name IN (:names)', {
replacements: {
names: directCopyOfUserInput
}
});
If the user inputs the value of :names as:
["test", "'); DELETE TestTable WHERE Id = 1 --')"]
The resulting SQL statement will be:
SELECT Id FROM Table WHERE Name IN ('test', '\'); DELETE TestTable WHERE Id = 1 --')
As the backslash has no special meaning in PostgreSQL, MSSQL, or SQLite, the statement will delete the record in TestTable with an Id of 1.
Update to version 3.20.0 or later.
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