CVE-2024-41942

Name	CVE-2024-41942
Description	JupyterHub is software that allows one to create a multi-user server for Jupyter notebooks. Prior to versions 4.1.6 and 5.1.0, if a user is granted the `admin:users` scope, they may escalate their own privileges by making themselves a full admin user. The impact is relatively small in that `admin:users` is already an extremely privileged scope only granted to trusted users. In effect, `admin:users` is equivalent to `admin=True`, which is not intended. Note that the change here only prevents escalation to the built-in JupyterHub admin role that has unrestricted permissions. It does not prevent users with e.g. `groups` permissions from granting themselves or other users permissions via group membership, which is intentional. Versions 4.1.6 and 5.1.0 fix this issue.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs	1078344

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
jupyterhub (PTS)	bookworm	3.0.0+ds1-1	vulnerable
	sid, trixie	5.0.0+ds1-3	vulnerable

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
jupyterhub	source	(unstable)	(unfixed)			1078344

Notes

[bookworm] - jupyterhub <no-dsa> (Minor issue)
https://github.com/jupyterhub/jupyterhub/security/advisories/GHSA-9x4q-3gxw-849f
https://github.com/jupyterhub/jupyterhub/commit/99e2720b0fc626cbeeca3c6337f917fdacfaa428 (4.1.6)
https://github.com/jupyterhub/jupyterhub/commit/ff2db557a85b6980f90c3158634bf924063ab8ba (5.1.0)