CVE-2023-47631 vantage6 Node accepts non-whitelisted algorithms from malicious server

High 7.2 Published Updated

A malicious server can bypass algorithm whitelisting in vantage6 nodes by setting a fake parent_id, allowing execution of unauthorized code.

Exploited in the wild
Not known
Login needed
An administrator
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is CVE-2023-47631?

CVE-2023-47631 is a high-severity vulnerability in vantage6, published on 14 Nov 2023. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

vantage6 is a framework to manage and deploy privacy enhancing technologies like Federated Learning (FL) and Multi-Party Computation (MPC). In affected versions a node does not check if an image is allowed to run if a `parent_id` is set. A malicious party that breaches the server may modify it to set a fake `parent_id` and send a task of a non-whitelisted algorithm. The node will then execute it because the `parent_id` that is set prevents checks from being run. This impacts all servers that are breached by an expert user. This vulnerability has been patched in version 4.1.2. All users are advised to upgrade. There are no known workarounds for this vulnerability.

Weakness: CWE-345

Which versions are affected by CVE-2023-47631?

6 open source packages ship an affected version, including vantage6-node and vantage6-server. It affects 1 product.

PackageAffectedFixed in
vantage6-node PyPIAll versions4.1.2
vantage6-node PyPIAll versions4.1.2
vantage6-node PyPIAll versions4.1.2
vantage6-server PyPIAll versions4.1.2
vantage6-server PyPIAll versions4.1.2
vantage6-server PyPIAll versions4.1.2

Products include Vantage6 Vantage6.

How do I fix CVE-2023-47631?

Upgrade vantage6-node to 4.1.2 or later.

Is CVE-2023-47631 being exploited?

There is no known exploitation of CVE-2023-47631 in the wild and no public exploit code.

Sources

Also known as GHSA-vc3v-ppc7-v486, PYSEC-2023-303, PYSEC-2023-304.

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