CVE-2020-26261

user-readable api tokens in systemd units

Description

jupyterhub-systemdspawner enables JupyterHub to spawn single-user notebook servers using systemd. In jupyterhub-systemdspawner before version 0.15 user API tokens issued to single-user servers are specified in the environment of systemd units. These tokens are incorrectly accessible to all users. In particular, the-littlest-jupyterhub is affected, which uses systemdspawner by default. This is patched in jupyterhub-systemdspawner v0.15

Category

7.9
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.16%
Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory pypi.org
Affected: jupyterhub systemdspawner
Published at:
Updated at:

References

Link Tags
https://github.com/jupyterhub/systemdspawner/security/advisories/GHSA-cg54-gpgr-4rm6 third party advisory
https://github.com/jupyterhub/systemdspawner/commit/a4d08fd2ade1cfd0ef2c29dc221e649345f23580 third party advisory patch
https://github.com/jupyterhub/systemdspawner/blob/master/CHANGELOG.md#v015 third party advisory release notes
https://pypi.org/project/jupyterhub-systemdspawner/ third party advisory product

Frequently Asked Questions

What is the severity of CVE-2020-26261?
CVE-2020-26261 has been scored as a high severity vulnerability.
How to fix CVE-2020-26261?
To fix CVE-2020-26261, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-26261 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-26261 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-26261?
CVE-2020-26261 affects jupyterhub systemdspawner.
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