CVE-2021-39159 Information

Description

BinderHub is a kubernetes-based cloud service that allows users to share reproducible interactive computing environments from code repositories. In affected versions a remote code execution vulnerability has been identified in BinderHub where providing BinderHub with maliciously crafted input could execute code in the BinderHub context with the potential to egress credentials of the BinderHub deployment including JupyterHub API tokens kubernetes service accounts and docker registry credentials. This may provide the ability to manipulate images and other user created pods in the deployment with the potential to escalate to the host depending on the underlying kubernetes configuration. Users are advised to update to version 0.2.0-n653. If users are unable to update they may disable the git repo provider by specifying the BinderHub.repo_providers as a workaround.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Reference

https://github.com/jupyterhub/binderhub/security/advisories/GHSA-9jjr-qqfp-ppwx https://github.com/jupyterhub/binderhub/commit/195caac172690456dcdc8cc7a6ca50e05abf8182.patch

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8