CVE-2021-43608 : Security Advisory and Response

Doctrine DBAL 3.x before 3.1.4 allows SQL Injection due to improper handling of inputs for LIMIT clauses. This vulnerability could be exploited if unescaped user inputs are passed to DBAL QueryBuilder or related APIs.

Understanding CVE-2021-43608

Doctrine DBAL vulnerability allowing SQL Injection.

What is CVE-2021-43608?

Doctrine DBAL 3.x prior to version 3.1.4 is impacted
Vulnerability arises from inadequate casting of offset and length inputs for LIMIT clause generation
SQL Injection is possible if unescaped user inputs are directly used in QueryBuilder or related APIs

The Impact of CVE-2021-43608

This vulnerability could lead to unauthorized SQL Injection attacks and potential data compromise.

Technical Details of CVE-2021-43608

Detailed technical aspects of the vulnerability.

Vulnerability Description

Vulnerability in Doctrine DBAL 3.x before 3.1.4
Improper handling of offset and length inputs in LIMIT clause generation
Allows SQL Injection if unescaped user inputs are utilized

Affected Systems and Versions

Systems running Doctrine DBAL 3.x versions before 3.1.4

Exploitation Mechanism

Attackers could inject malicious SQL queries by passing unescaped user inputs to vulnerable APIs
Lack of proper input validation leads to successful exploitation

Mitigation and Prevention

Measures to address the CVE-2021-43608 vulnerability.

Immediate Steps to Take

Update Doctrine DBAL to version 3.1.4 or newer
Avoid direct use of unescaped user inputs in QueryBuilder or related APIs

Long-Term Security Practices

Employ input validation and sanitation techniques in application development
Regular security assessments to identify and mitigate similar vulnerabilities

Patching and Updates

Stay informed about security advisories and updates from Doctrine DBAL
Promptly apply patches and updates to the software to mitigate potential risks