CVE-2023-25574 – jupyterhub-ltiauthenticator

Package

Manager: pip
Name: jupyterhub-ltiauthenticator
Vulnerable Version: =1.3.0 || >=1.3.0 <1.4.0

Severity

Level: Critical

CVSS v3.1: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

EPSS: 0.00085 pctl0.2554

Details

LTI JupyterHub Authenticator does not properly validate JWT Signature ### 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](https://github.com/jupyterhub/ltiauthenticator/blob/3feec2e81b9d3b0ad6b58ab4226af640833039f3/ltiauthenticator/lti13/validator.py#L122-L164) didn't validate a JWT signature.

Metadata

Created: 2025-02-25T17:48:34Z
Modified: 2025-02-25T17:48:34Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/02/GHSA-mcgx-2gcr-p3hp/GHSA-mcgx-2gcr-p3hp.json
CWE IDs: ["CWE-347"]
Alternative ID: GHSA-mcgx-2gcr-p3hp
Finding: F204
Auto approve: 1