CVE-2022-31183
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.
CVSS Details
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Threat Intelligence
No active exploitation signals — not in CISA KEV and no EPSS score yet.
Weaknesses 1
Affected Products 1
| Vendor | Product | Version | Range |
|---|---|---|---|
| typelevel | fs2 | * | ≥3.1.0 – <3.2.11 |
References 3
- github.com https://github.com/nodejs/node/issues/43994
- github.com https://github.com/typelevel/fs2/commit/659824395826a314e0a4331535dbf1ef8bef8207
- github.com https://github.com/typelevel/fs2/security/advisories/GHSA-2cpx-6pqp-wf35
Remediation
- github.com https://github.com/typelevel/fs2/commit/659824395826a314e0a4331535dbf1ef8bef8207