Improper Verification of Cryptographic Signature Affecting jupyterhub-ltiauthenticator package, versions [1.3.0,1.4.0)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-PYTHON-JUPYTERHUBLTIAUTHENTICATOR-8749454
- published26 Feb 2025
- disclosed25 Feb 2025
- creditUnknown
Introduced: 25 Feb 2025
CVE-2023-25574 (opens in a new tab)How to fix?
Upgrade jupyterhub-ltiauthenticator to version 1.4.0 or higher.
Overview
jupyterhub-ltiauthenticator is a JupyterHub authenticator implementing LTI v1.1 and LTI v1.3
Affected versions of this package are vulnerable to Improper Verification of Cryptographic Signature in the jwt_verify_and_decode() function, in the form of improper validation of JWT signatures. An attacker can authorize a forged request if the target application is configured to use LTI13Authenticator.