fs2-io skips mTLS client verification
Impact
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:
fs2-iorunning on Node.js. The JVM TLS implementation is completely independent.TLSSockets in server-mode. Client-modeTLSSockets are implemented via a different API.- mTLS as enabled via
requestCert = trueinTLSParameters. The default setting isfalsefor server-modeTLSSockets.
It was introduced with the initial Node.js implementation of fs2-io in v3.1.0.
Patches
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.
Workarounds
If using an unpatched version on Node.js, do not use a server-mode TLSSocket with requestCert = true to establish a mTLS connection.
References
- https://github.com/nodejs/node/issues/43994
- https://www.cloudflare.com/learning/access-management/what-is-mutual-tls/
For more information
If you have any questions or comments about this advisory:
- Open an issue.
- Contact the Typelevel Security Team.
Software afectado
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| Plataforma | Paquete | Versiones vulnerables | Corregida en |
|---|---|---|---|
| Java / Kotlin (Maven) | co.fs2:fs2-io | >= 3.1.0, < 3.2.11 | 3.2.11 |
| Java / Kotlin (Maven) | co.fs2:fs2-io_2.12 | >= 3.1.0, < 3.2.11 | 3.2.11 |
| Java / Kotlin (Maven) | co.fs2:fs2-io_2.13 | >= 3.1.0, < 3.2.11 | 3.2.11 |
| Java / Kotlin (Maven) | co.fs2:fs2-io_3 | >= 3.1.0, < 3.2.11 | 3.2.11 |
| Java / Kotlin (Maven) | co.fs2:fs2-io_sjs1_2.13 | >= 3.1.0, < 3.2.11 | 3.2.11 |
| Java / Kotlin (Maven) | co.fs2:fs2-io_sjs1_3 | >= 3.1.0, < 3.2.11 | 3.2.11 |
Referencias
- https://github.com/typelevel/fs2/security/advisories/GHSA-2cpx-6pqp-wf35
- https://nvd.nist.gov/vuln/detail/CVE-2022-31183
- https://github.com/nodejs/node/issues/43994
- https://github.com/typelevel/fs2/commit/19ce392e8093d9571387dbd78e159e655a85aeea
- https://github.com/typelevel/fs2/commit/659824395826a314e0a4331535dbf1ef8bef8207
- https://github.com/typelevel/fs2
- https://github.com/typelevel/fs2/releases/tag/v3.2.11
- Vector CVSS
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H- Debilidad (CWE)
CWE-295- Plataforma
- Java / Kotlin (Maven)
- Paquete
co.fs2:fs2-io, co.fs2:fs2-io_2.12, co.fs2:fs2-io_2.13- Publicada
- 29.07.2022
- Actualizado
- 11.10.2026 12:22
Fuentes y licencias
OSV / GitHub Advisory Database - GHSA-2cpx-6pqp-wf35 - CC BY 4.0
Historial de vulnerabilidades: co.fs2:fs2-io
Todas las vulnerabilidades publicadas de este paquete (Java / Kotlin (Maven)), de la más reciente a la más antigua. Muestra si es un fallo aislado o un paquete que hay que vigilar.
Esta es la única vulnerabilidad conocida de este paquete.
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