CVE-2022-31183

Public Exploit
mTLS client verification is skipped in fs2 on Node.js

Description

fs2 is a compositional, streaming I/O library for Scala. When establishing a server-mode `TLSSocket` using `fs2-io` on Node.js, the parameter `requestCert = true` is ignored, peer certificate verification is skipped, and the connection proceeds. The vulnerability is limited to: 1. `fs2-io` running on Node.js. The JVM TLS implementation is completely independent. 2. `TLSSocket`s in server-mode. Client-mode `TLSSocket`s are implemented via a different API. 3. mTLS as enabled via `requestCert = true` in `TLSParameters`. The default setting is `false` for server-mode `TLSSocket`s. It was introduced with the initial Node.js implementation of fs2-io in 3.1.0. A patch is released in v3.2.11. The requestCert = true parameter is respected and the peer certificate is verified. If verification fails, a SSLException is raised. If using an unpatched version on Node.js, do not use a server-mode TLSSocket with requestCert = true to establish a mTLS connection.

Category

9.1
CVSS
Severity: Critical
CVSS 3.1 •
EPSS 0.13%
Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory github.com
Affected: typelevel fs2
Published at:
Updated at:

References

Link Tags
https://github.com/typelevel/fs2/security/advisories/GHSA-2cpx-6pqp-wf35 third party advisory
https://github.com/nodejs/node/issues/43994 issue tracking exploit third party advisory
https://github.com/typelevel/fs2/commit/659824395826a314e0a4331535dbf1ef8bef8207 third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2022-31183?
CVE-2022-31183 has been scored as a critical severity vulnerability.
How to fix CVE-2022-31183?
To fix CVE-2022-31183, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-31183 being actively exploited in the wild?
It is possible that CVE-2022-31183 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-31183?
CVE-2022-31183 affects typelevel fs2.
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