CVE-2022-47933 : Security Advisory and Response

A denial of service vulnerability was discovered in Brave Browser before version 1.42.51. This vulnerability allowed a remote attacker to exploit the browser by referencing the IPFS scheme in a crafted HTML file.

Understanding CVE-2022-47933

In this section, we will delve into the details of CVE-2022-47933.

What is CVE-2022-47933?

CVE-2022-47933 is a vulnerability in Brave Browser that could be triggered by a specially crafted HTML file containing references to the IPFS scheme. The issue lies in the 'ipfs::OnBeforeURLRequest_IPFSRedirectWork()' function in 'ipfs_redirect_network_delegate_helper.cc'.

The Impact of CVE-2022-47933

This vulnerability could be exploited by a remote attacker to cause a denial of service, affecting the availability of the affected Brave Browser versions.

Technical Details of CVE-2022-47933

Let's explore the technical aspects of CVE-2022-47933.

Vulnerability Description

The root cause of CVE-2022-47933 was an uncaught exception in the 'ipfs::OnBeforeURLRequest_IPFSRedirectWork()' function, leading to a denial of service condition.

Affected Systems and Versions

The affected system is Brave Browser versions prior to 1.42.51.

Exploitation Mechanism

An attacker could exploit this vulnerability by persuading a user to open a malicious HTML file that triggers the IPFS scheme.

Mitigation and Prevention

Discover the necessary steps to mitigate and prevent the impact of CVE-2022-47933.

Immediate Steps to Take

Users are advised to update Brave Browser to version 1.42.51 or later to prevent exploitation of this vulnerability.

Long-Term Security Practices

It is recommended to practice safe browsing habits and exercise caution when interacting with untrusted files or links.

Patching and Updates

Stay vigilant for security updates from Brave Browser and ensure timely installation to protect against known vulnerabilities.