CVE-2024-21653: vantage6 insecure SSH configuration for node and server containers

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-01-30 · updated 2026-06-17
Weakness: CWE-284

Description

The vantage6 technology enables to manage and deploy privacy enhancing technologies like Federated Learning (FL) and Multi-Party Computation (MPC). Nodes and servers get a ssh config by default that permits root login with password authentication. In a proper deployment, the SSH service is not exposed so there is no risk, but not all deployments are ideal. The default should therefore be less permissive. The vulnerability can be mitigated by removing the ssh part from the docker file and rebuilding the docker image. Version 4.2.0 patches the vulnerability.

Affected products

vantage6: before 4.2.0 — fixed in 4.2.0

How to fix

Upgrade to a fixed version: vantage6 4.2.0. Check the vendor advisory for mitigations.

References

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