Learn about CVE-2021-21263, a query binding exploitation vulnerability in Laravel affecting versions before 6.20.11, 7.30.2, and 8.22.1. Understand the impact, technical details, and mitigation steps.
Laravel is a popular web application framework. This vulnerability exists in versions before 6.20.11, 7.30.2, and 8.22.1. An attacker could exploit this by crafting a request where a non-array field is passed as an array value without proper validation. This could lead to unexpected query results, impacting the integrity of the application.
Understanding CVE-2021-21263
This CVE highlights a query binding exploitation vulnerability in Laravel, affecting multiple versions.
What is CVE-2021-21263?
Versions of Laravel prior to 6.20.11, 7.30.2, and 8.22.1 are vulnerable to query binding exploitation. The illuminate/database package used by Laravel is also impacted by this vulnerability.
The Impact of CVE-2021-21263
The exploitation could result in unexpected query results, affecting the normal functioning of the application. Under certain circumstances, queries may return no expected results.
Technical Details of CVE-2021-21263
This section delves into specific technical aspects of the CVE.
Vulnerability Description
The vulnerability arises from passing non-array values as an array without proper validation, leading to unexpected query bindings.
Affected Systems and Versions
Frameworks Laravel 6, 7, and 8 versions are affected before specific patch versions.
Exploitation Mechanism
Crafted requests passing non-array values as arrays exploit the query binding vulnerability.
Mitigation and Prevention
Here are the details for mitigating and preventing potential attacks.
Immediate Steps to Take
Upgrade Laravel to versions 6.20.11, 7.30.2, or 8.22.1 to prevent exploitation.
Long-Term Security Practices
Regularly update and validate user inputs to prevent injection vulnerabilities.
Patching and Updates
Stay informed about Laravel security updates and apply patches promptly to protect your application.