CVE-2023-40610: Apache Superset Privilege Escalation Flaw

CVE-2023-40610 Overview

CVE-2023-40610 is an improper authorization vulnerability affecting Apache Superset, a popular open-source data visualization and business intelligence platform. The vulnerability exists in versions up to but excluding 2.1.2 and allows authenticated attackers to exploit the default examples database connection to perform unauthorized modifications to the Superset metadata database through specially crafted CTE (Common Table Expression) SQL statements.

Critical Impact

Successful exploitation allows attackers to tamper with authentication and authorization data in the Apache Superset metadata database, potentially leading to full system compromise and unauthorized access to sensitive business intelligence data.

Affected Products

• Apache Superset versions prior to 2.1.2
• Apache Superset installations using the default examples database connection
• Deployments with examples schema access enabled

Discovery Timeline

• 2023-11-27 - CVE-2023-40610 published to NVD
• 2025-02-13 - Last updated in NVD database

Technical Details for CVE-2023-40610

Vulnerability Analysis

This vulnerability stems from an improper authorization check (CWE-863) in Apache Superset's handling of database connections. The default examples database connection in Superset is configured to allow access to both the examples schema and the internal metadata database used by Superset for managing authentication, authorization, and application state.

When an authenticated user with access to the SQL Lab feature crafts a malicious CTE SQL statement, they can bypass intended access controls and directly manipulate data in the metadata database. This is particularly dangerous because the metadata database contains sensitive information including user credentials, role assignments, and permission configurations.

The attack requires network access and low privileges (an authenticated user account), but does not require any user interaction. The impact spans confidentiality, integrity, and availability as attackers can read sensitive configuration data, modify authorization rules, and potentially disrupt service availability.

Root Cause

The root cause of CVE-2023-40610 lies in insufficient separation between the examples database connection and the Superset metadata database. The default configuration fails to properly restrict which database schemas are accessible through the examples connection, creating an unintended pathway to the metadata tables. This represents a classic case of improper authorization where the application does not adequately verify that a user's database queries are restricted to their intended scope.

Attack Vector

The attack is executed over the network by an authenticated attacker with access to the SQL Lab feature in Apache Superset. The attacker leverages the default examples database connection which, by design flaw, provides access to the metadata database schema. By constructing a CTE (Common Table Expression) SQL statement, the attacker can reference and modify tables in the metadata database that should be inaccessible.

The exploitation flow involves:

1. Authenticating to Apache Superset with a low-privilege user account
2. Accessing the SQL Lab feature
3. Using the default examples database connection
4. Crafting a CTE SQL statement that targets metadata database tables
5. Executing INSERT, UPDATE, or DELETE operations on authentication/authorization data

Due to the sensitive nature of this vulnerability and the lack of verified code examples, technical details should be referenced from the GitHub Security Advisory GHSA-f678-j579-4xf5 or the Apache Mailing List Thread.

Detection Methods for CVE-2023-40610

Indicators of Compromise

• Unusual SQL queries in SQL Lab logs containing CTE statements targeting system tables
• Unexpected modifications to user roles, permissions, or authentication data
• Anomalous database connection activity from the examples connection to metadata schemas
• Unauthorized privilege changes for user accounts

Detection Strategies

• Monitor SQL Lab query logs for CTE statements that reference metadata database tables
• Implement database activity monitoring to detect cross-schema queries from the examples connection
• Review audit logs for unexpected changes to user permissions or role assignments
• Deploy SentinelOne Singularity XDR to detect anomalous database access patterns

Monitoring Recommendations

• Enable comprehensive SQL query logging in Apache Superset
• Set up alerts for any queries attempting to access or modify the metadata database from non-administrative connections
• Implement database-level auditing for the Superset metadata tables
• Monitor for new user creation or privilege escalation events

How to Mitigate CVE-2023-40610

Immediate Actions Required

• Upgrade Apache Superset to version 2.1.2 or later immediately
• Remove or disable the default examples database connection if not required
• Review all existing database connections and restrict schema access appropriately
• Audit user accounts and permissions for unauthorized changes

Patch Information

Apache has addressed this vulnerability in Superset version 2.1.2. Organizations should upgrade to this version or later to remediate CVE-2023-40610. The official patch information and security advisory can be found on the Apache Mailing List Thread.

Workarounds

• Delete or disable the default examples database connection entirely
• Configure database connections with strict schema isolation to prevent access to the metadata database
• Restrict SQL Lab access to only trusted users until patching is complete
• Implement network segmentation to limit access to the Superset application

# Example: Verify current Superset version
superset version

# Example: Check for examples database connection in configuration
grep -r "examples" /path/to/superset/config/

# Upgrade to patched version
pip install apache-superset>=2.1.2