CVE-2022-3095 : What You Need to Know

A vulnerability was discovered in the Dart URI class implementation, affecting versions prior to 2.18 for Dart and prior to 3.30 for Flutter. The issue lies in the differences between Dart's backslash parsing and the WhatWG URL standards, leading to potential authentication bypass vulnerabilities in web applications.

Understanding CVE-2022-3095

This CVE highlights the impact of incorrect backslash parsing in the Dart library, potentially allowing attackers to bypass authentication mechanisms.

What is CVE-2022-3095?

The vulnerability arises from discrepancies in backslash parsing between Dart and the WhatWG URL standards, impacting versions before 2.18 for Dart and before 3.30 for Flutter.

The Impact of CVE-2022-3095

Due to this vulnerability, malicious actors could exploit the differences in backslash handling to bypass authentication in web applications interpreting URIs.

Technical Details of CVE-2022-3095

This section delves into the specifics of the vulnerability, including its description, affected systems and versions, and exploitation mechanisms.

Vulnerability Description

The vulnerability stems from the inconsistent backslash parsing implementation in the Dart URI class, leading to potential authentication bypass vulnerabilities.

Affected Systems and Versions

Vendor: Google LLC
Products: Dart, Flutter
Affected Versions:
Dart: less than 2.18.2
Flutter: less than 3.3.3
Platforms: All

Exploitation Mechanism

Attackers can leverage the differences in backslash handling between Dart and standard URL formats to manipulate URIs and potentially bypass authentication mechanisms.

Mitigation and Prevention

To address CVE-2022-3095 and enhance system security, immediate steps and long-term security practices are essential.

Immediate Steps to Take

It is advisable to update Dart to version 2.18.2 or higher and Flutter to version 3.3.3 or above to mitigate the vulnerability effectively.

Long-Term Security Practices

Ensure regular updates and patches for Dart and Flutter to stay protected against known vulnerabilities and security threats.

Patching and Updates

Keep a diligent check on security advisories and promptly apply patches and updates released by Google to maintain a secure development environment.