LTI JupyterHub Authenticator does not properly validate JWT Signature

緊急 9.8CVE-2023-25574 · GHSA-mcgx-2gcr-p3hp · PYSEC-2025-120 · 25/02/2025 公開 · 17/06/2026 更新

要点

CVE-2023-25574 は jupyterhub-ltiauthenticator, lti jupyterhub authenticator (jupyter) 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）：0.36%（全脆弱性の 29.3% より高い）。
対処：1.4.0 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
jupyterhub-ltiauthenticator PyPI	`≥ 1.3.0, < 1.4.0≤ 1.3.0`	`1.4.0`
lti jupyterhub authenticator jupyter	`= 1.3.0`	修正版なし

概要

Impact

Only users that has configured a JupyterHub installation to use the authenticator class LTI13Authenticator are influenced.

LTI13Authenticator that was introduced in jupyterhub-ltiauthenticator 1.3.0 wasn't validating JWT signatures. This is believed to allow the LTI13Authenticator to authorize a forged request granting access to existing and new user identities.

Patches

None.

Workarounds

None.

References

This code segment didn't validate a JWT signature.

NVD の説明

`jupyterhub-ltiauthenticator` is a JupyterHub authenticator for learning tools interoperability (LTI). LTI13Authenticator that was introduced in `jupyterhub-ltiauthenticator` 1.3.0 wasn't validating JWT signatures. This is believed to allow the LTI13Authenticator to authorize a forged request. Only users that has configured a JupyterHub installation to use the authenticator class `LTI13Authenticator` are affected. `jupyterhub-ltiauthenticator` version 1.4.0 removes LTI13Authenticator to address the issue. No known workarounds are available.