CVE-2020-26261
jupyterhub-systemdspawner enables JupyterHub to spawn single-user notebook servers using systemd.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.48%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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
- CVSS 3.1
- 7.9 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
- EPSS
- 0.48% probability · 40th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-668
- Affected
- jupyterhub/systemdspawner
- Source
- security-advisories@github.com
References
- https://github.com/jupyterhub/systemdspawner/blob/master/CHANGELOG.md#v015Release Notes, Third Party Advisory
- https://github.com/jupyterhub/systemdspawner/commit/a4d08fd2ade1cfd0ef2c29dc221e649345f23580Patch, Third Party Advisory
- https://github.com/jupyterhub/systemdspawner/security/advisories/GHSA-cg54-gpgr-4rm6Third Party Advisory
- https://pypi.org/project/jupyterhub-systemdspawner/Product, Third Party Advisory
- https://github.com/jupyterhub/systemdspawner/blob/master/CHANGELOG.md#v015Release Notes, Third Party Advisory
- https://github.com/jupyterhub/systemdspawner/commit/a4d08fd2ade1cfd0ef2c29dc221e649345f23580Patch, Third Party Advisory
- https://github.com/jupyterhub/systemdspawner/security/advisories/GHSA-cg54-gpgr-4rm6Third Party Advisory
- https://pypi.org/project/jupyterhub-systemdspawner/Product, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.