CVE-2022-31604 Unsafe deserialisation in the PKI implementation scheme of NVFlare

Critical 9.8 Published 1 Jul 2022 Updated 3 Aug 2024

An unprivileged network attacker can achieve remote code execution and denial of service via unsafe pickle deserialization of CA credentials in NVIDIA FLARE.

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

What is CVE-2022-31604?

CVE-2022-31604 is a critical unsafe deserialization vulnerability in NVIDIA FLARE, published on 1 Jul 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

NVFLARE, versions prior to 2.1.2, contains a vulnerability in its PKI implementation module, where The CA credentials are transported via pickle and no safe deserialization. The deserialization of Untrusted Data may allow an unprivileged network attacker to cause Remote Code Execution, Denial Of Service, and Impact to both Confidentiality and Integrity.

Weakness: CWE-502

Which versions are affected by CVE-2022-31604?

3 open source packages ship an affected version, including nvflare. It affects 1 product.

Package	Affected	Fixed in
`nvflare` PyPI	All versions	`2.1.2`
`nvflare` PyPI	All versions	`2.1.2`
`nvflare` PyPI	All versions	`2.1.2`

Products include Nvidia Nvflare.

How do I fix CVE-2022-31604?

Upgrade nvflare to 2.1.2 or later.

Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.

Is CVE-2022-31604 being exploited?

There is no known exploitation of CVE-2022-31604 in the wild and no public exploit code.

Sources

Also known as GHSA-rcxc-3w2m-mp8h, PYSEC-2022-231.