Critical severity · published Aug 25, 2021
CVE-2021-39159
BinderHub is a kubernetes-based cloud service that allows users to share reproducible interactive computing environments from code repositories
9.8
CVSS
1.9%
EPSS
No
On KEV
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
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.9% · higher than 80% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BI
Binderhub · Jupyter
before 0.2.0-n653 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-39159
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-39159
Mailing List
https://github.com/jupyterhub/binderhub/commit/195caac172690456dcdc8cc7a6ca50e05abf8182.patch
Patch
https://github.com/jupyterhub/binderhub/security/advisories/GHSA-9jjr-qqfp-ppwx
