Executive Summary

This vulnerability exists in SQLFluff, a SQL linter and auto-formatter. Before version 4.1.0, if an untrusted user could submit SQL queries to be linted, they could craft a malicious query with excessive nesting. This malicious query would cause the parser to consume excessive resources, leading to a Denial of Service (DoS) condition through resource exhaustion.

Useful 0 Not Useful 0

Compliance Impact

The vulnerability in SQLFluff prior to version 4.1.0 allows an untrusted user to cause a Denial of Service (DoS) through resource exhaustion by submitting maliciously nested SQL queries. This vulnerability impacts availability but does not affect confidentiality or integrity of data.

Since the vulnerability does not lead to unauthorized access, data leakage, or data modification, it has limited direct impact on compliance with data protection regulations such as GDPR or HIPAA, which primarily focus on confidentiality and integrity of personal or health data.

However, the DoS condition could affect system availability, which is a component of some compliance frameworks. Organizations relying on SQLFluff in environments where availability is critical may need to consider this risk until patched.

Useful 0 Not Useful 0

Impact Analysis

The impact of this vulnerability is a Denial of Service (DoS) attack. An attacker can cause the application using SQLFluff to become unresponsive or crash by submitting a specially crafted SQL query with excessive nesting. This results in resource exhaustion, potentially disrupting normal operations and availability of the affected system.

Useful 0 Not Useful 0

Mitigation Strategies

To mitigate this vulnerability, upgrade SQLFluff to version 4.1.0 or later, where the issue has been patched.

Additionally, avoid allowing untrusted users to submit SQL queries for linting in environments using vulnerable versions prior to 4.1.0.

Useful 0 Not Useful 0