CVE-2022-31183 : Security Advisory and Response

A critical vulnerability has been identified in fs2, a compositional, streaming I/O library for Scala when used with Node.js. This CVE, marked as mTLS client verification being skipped in fs2 on Node.js, poses a high risk to the confidentiality and integrity of systems.

Understanding CVE-2022-31183

This section delves into the details of the vulnerability and its implications.

What is CVE-2022-31183?

CVE-2022-31183 highlights the improper certificate validation issue in fs2 when establishing a server-mode

TLSSocket

on Node.js. It allows for the skipping of peer certificate verification, potentially leading to unauthorized access.

The Impact of CVE-2022-31183

With a base severity score of 9.1 (Critical), the vulnerability can result in high confidentiality and integrity impact, especially when using mTLS connections with

requestCert = true

in

TLSParameters

.

Technical Details of CVE-2022-31183

Explore the technical aspects of the vulnerability to gain insights into affected systems, exploitation mechanisms, and mitigation strategies.

Vulnerability Description

The vulnerability affects

fs2-io

versions from 3.1.0 to 3.2.11 when running on Node.js. It specifically impacts

TLSSocket

s in server-mode with mTLS enabled via

requestCert = true

, allowing for unverified connections.

Affected Systems and Versions

Systems running

fs2-io

on Node.js versions between 3.1.0 and 3.2.11 are susceptible to this vulnerability. It is crucial to update to version 3.2.11 to patch the issue.

Exploitation Mechanism

Attackers can exploit this vulnerability by establishing malicious mTLS connections through a server-mode TLSSocket with

requestCert = true

, bypassing peer certificate validation and gaining unauthorized access.

Mitigation and Prevention

Learn how to mitigate the risks associated with CVE-2022-31183 and prevent potential security breaches.

Immediate Steps to Take

If utilizing an affected version of fs2 on Node.js, refrain from using server-mode TLSSockets with

requestCert = true

for mTLS connections until the patch is applied. Upgrade to version 3.2.11 to address the vulnerability.

Long-Term Security Practices

Ensure regular security updates and vulnerability scans to detect and mitigate similar issues in the future. Consider implementing robust TLS configuration practices and monitoring mechanisms.

Patching and Updates

The patch for CVE-2022-31183 is available in version 3.2.11 of fs2. It enforces peer certificate verification when

requestCert = true

, preventing unauthorized access through mTLS connections.