CVE-2023-22580: Sequelize Information Disclosure Flaw

CVE-2023-22580 Overview

CVE-2023-22580 is an information disclosure vulnerability in the Sequelize JavaScript ORM library for Node.js. Due to improper input filtering in query handling, malicious queries can lead to sensitive information disclosure. Sequelize is one of the most popular ORM libraries for Node.js applications, making this vulnerability potentially impactful across a wide range of web applications and backend services.

Critical Impact

Attackers can craft malicious queries to extract sensitive information from databases through improper input filtering in Sequelize, potentially exposing confidential data without requiring authentication.

Affected Products

• Sequelizejs Sequelize versions prior to patched releases
• Sequelize 7.0.0 alpha versions (alpha1 through alpha19)
• Sequelize 7.0.0 test versions (oc_test_1 through oc_test_4)

Discovery Timeline

• February 16, 2023 - CVE-2023-22580 published to NVD
• November 21, 2024 - Last updated in NVD database

Technical Details for CVE-2023-22580

Vulnerability Analysis

This vulnerability stems from inadequate input validation and filtering mechanisms within the Sequelize ORM library. When processing user-supplied query parameters, the library fails to properly sanitize certain inputs, creating an avenue for information disclosure attacks. The vulnerability is classified under CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor), indicating that the core issue allows attackers to access data they should not be authorized to view.

The vulnerability can be exploited remotely over the network without requiring any privileges or user interaction. This makes it particularly dangerous in production environments where Sequelize is used to interface with databases containing sensitive user data, financial records, or other confidential information.

Root Cause

The root cause of CVE-2023-22580 lies in the improper input filtering implementation within Sequelize's query construction mechanisms. When building database queries from user-supplied parameters, the library does not adequately validate or sanitize input data, allowing specially crafted queries to bypass intended access controls and retrieve unauthorized information.

This type of vulnerability typically occurs when ORM libraries trust user input without sufficient validation, allowing attackers to manipulate query logic through carefully constructed payloads that exploit gaps in the filtering logic.

Attack Vector

The attack vector for this vulnerability is network-based, requiring no authentication or user interaction. An attacker can exploit this vulnerability by:

1. Identifying an application endpoint that uses Sequelize to process user-supplied query parameters
2. Crafting malicious query payloads designed to bypass input filtering mechanisms
3. Submitting these payloads to extract sensitive information from the underlying database
4. Retrieving confidential data that should not be accessible through normal application flows

The vulnerability is exploited through the network by sending specially crafted requests to applications using vulnerable versions of Sequelize. For detailed technical analysis, refer to the DIVD CVE-2023-22580 Report and the DIVD-2022-00020 case description.

Detection Methods for CVE-2023-22580

Indicators of Compromise

• Unusual database query patterns showing attempts to access unauthorized data fields or tables
• Application logs containing malformed or suspicious query parameters targeting Sequelize endpoints
• Unexpected data access patterns in database audit logs that don't match normal application behavior
• Error messages or exceptions related to query parsing that may indicate exploitation attempts

Detection Strategies

• Implement database query logging and monitor for queries that attempt to access sensitive columns or tables outside normal application patterns
• Deploy web application firewalls (WAF) configured to detect and block common ORM injection patterns
• Use application performance monitoring (APM) tools to identify anomalous query behavior in Sequelize-based applications
• Review dependency vulnerability scanners for flagged Sequelize versions in your Node.js projects

Monitoring Recommendations

• Enable verbose logging for Sequelize queries in development and staging environments to understand query patterns
• Configure database-level auditing to track all SELECT queries accessing sensitive tables
• Set up alerts for unusual spikes in database read operations that may indicate data exfiltration attempts
• Monitor npm audit reports and security advisories for Sequelize-related vulnerabilities

How to Mitigate CVE-2023-22580

Immediate Actions Required

• Audit all Node.js applications in your environment to identify those using vulnerable Sequelize versions
• Update Sequelize to the latest patched version that addresses CVE-2023-22580
• Review application code to ensure proper input validation is implemented before passing data to Sequelize queries
• Implement parameterized queries and avoid dynamic query construction with user input where possible

Patch Information

Organizations should update their Sequelize dependency to a patched version. Check the official Sequelize repository and npm registry for the latest security releases. The affected versions include Sequelize versions prior to the security fix and all 7.0.0 alpha/test versions listed in the advisory.

To update Sequelize in your Node.js project:

# Check current Sequelize version
npm list sequelize

# Update to the latest patched version
npm update sequelize

# Or install a specific patched version
npm install sequelize@latest

Workarounds

• Implement additional input validation layers in your application code before data reaches Sequelize query methods
• Use allowlisting to restrict query parameters to expected values only
• Deploy rate limiting on API endpoints that interact with Sequelize to limit potential data exfiltration
• Consider using database-level access controls to restrict the scope of data accessible to application accounts

# Configuration example - Run npm audit to check for vulnerabilities
npm audit

# Fix vulnerabilities automatically where possible
npm audit fix

# Force update if needed (review changes carefully)
npm audit fix --force