Unsafe yaml deserialization in NVFlare

緊急 9.8CVE-2022-31605 · GHSA-hrf3-622q-8366 · PYSEC-2022-232 · 01/07/2022 公開 · 17/06/2026 更新

要点

CVE-2022-31605 は nvflare, nvflare (nvidia) に影響する深刻度「緊急」 (CVSS 9.8) の脆弱性です。
今後30日間に悪用される確率（EPSS）：2.1%（全脆弱性の 82.0% より高い）。
対処：2.1.2 以降に更新してください。

パッケージ	影響を受けるバージョン	修正済みバージョン
nvflare PyPI	`< 2.1.2`	`2.1.2`
nvflare nvidia	`< 2.1.2`	`2.1.2`

概要

Impact

NVFLARE contains a vulnerability in its utils module, where YAML files are loaded via yaml.load() instead of yaml.safe_load(). 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.

All versions before 2.1.2 are affected. CVSS Score = 9.8 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Patches

The patch will be included in nvflare==2.1.2

Workarounds

Change yaml.load() to yaml.safe_load()

Additional information

Issue Found by: Oliver Sellwood (@Nintorac)

NVD の説明

NVFLARE, versions prior to 2.1.2, contains a vulnerability in its utils module, where YAML files are loaded via yaml.load() instead of yaml.safe_load(). 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.