CVE-2016-10556: SQL Injection
Affected versions of sequelize cast arrays to strings and fail to properly escape the resulting SQL statement, resulting in a SQL injection vulnerability.
Proof of Concept 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: sql 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.
Recommendation
Update to version 3.20.0 or later.
Other sources
sequelize is an Object-relational mapping, or a middleman to convert things from Postgres, MySQL, MariaDB, SQLite and Microsoft SQL Server into usable data for NodeJS In Postgres, SQLite, and Microsoft SQL Server there is an issue where arrays are treated as strings and improperly escaped. This causes potential SQL injection in sequelize 3.19.3 and earlier, where a malicious user could put ["test", "'); DELETE TestTable WHERE Id = 1 --')"] inside of database.query('SELECT FROM TestTable WHERE Name IN (:names)', { replacements: { names: directCopyOfUserInput } }); and cause the SQL statement to become SELECT Id FROM Table WHERE Name IN ('test', '\'); DELETE TestTable WHERE Id = 1 --'). In Postgres, MSSQL, and SQLite, the backslash has no special meaning. This causes the the statement to delete whichever Id has a value of 1 in the TestTable table.
Affected Software
Event History
Frequently Asked Questions
What is CVE-2016-10556?
CVE-2016-10556 is a SQL injection vulnerability in the `sequelize` package.
How does CVE-2016-10556 affect the `sequelize` package?
CVE-2016-10556 allows an attacker to inject malicious SQL statements into the application.
What is the severity of CVE-2016-10556?
CVE-2016-10556 has a severity rating of 7.5 (High).
How can I fix CVE-2016-10556?
To fix CVE-2016-10556, update the `sequelize` package to version 3.20.0 or newer.
Is there any reference documentation for CVE-2016-10556?
Yes, you can find more information about CVE-2016-10556 in the following references: [NVD](https://nvd.nist.gov/vuln/detail/CVE-2016-10556), [GitHub Issue](https://github.com/sequelize/sequelize/issues/5671), [GitHub Commit](https://github.com/sequelize/sequelize/commit/23952a2b020cc3571f090e67dae7feb084e1be71).