CVE-2020-15110 Possible pod name collisions in jupyterhub-kubespawner
Attackers can craft server names to access other users' default servers, leading to unauthorized access and privilege escalation in JupyterHub environments.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-15110?
CVE-2020-15110 is a medium-severity missing authorization vulnerability in jupyterhub kubespawner, published on 17 Jul 2020. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
In jupyterhub-kubespawner before 0.12, certain usernames will be able to craft particular server names which will grant them access to the default server of other users who have matching usernames. This has been fixed in 0.12.
Weakness: CWE-863
Which versions are affected by CVE-2020-15110?
3 open source packages ship an affected version, including jupyterhub-kubespawner. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
jupyterhub-kubespawner PyPI | All versions | 0.12.0 |
jupyterhub-kubespawner PyPI | All versions | 0.12.0 |
jupyterhub-kubespawner PyPI | All versions | 0.12.0 |
Products include Jupyterhub Kubespawner.
How do I fix CVE-2020-15110?
Upgrade jupyterhub-kubespawner to 0.12.0 or later.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2020-15110 being exploited?
There is no known exploitation of CVE-2020-15110 in the wild and no public exploit code.
Sources
Also known as GHSA-v7m9-9497-p9gr, PYSEC-2020-51.