JupyterHub is software that allows users to create a multi-user server for Jupyter notebooks. Prior to 5.5.0, invalid input to form-based login authenticators can place an unbounded attacker-controlled username in failed-login logs, allowing an unauthenticated attacker to consume logging and storage resources. This issue is fixed in version 5.5.0.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
Low
Partial disruption
CVSS Vector v3.1
Weakness Type (CWE)
Vulnerable Products
jupyterhub:jupyterhub
References 2
https://github.com/jupyterhub/jupyterhub/security/advisories/GHSA-p43p-whwx-q52h
https://github.com/jupyterhub/jupyterhub/security/advisories/GHSA-p43p-whwx-q52h
https://github.com/jupyterhub/jupyterhub/commit/d6dc595f84b7509969686da31d87d6d…
https://github.com/jupyterhub/jupyterhub/commit/d6dc595f84b7509969686da31d87d6d69e7fce0a