CVE-2020-26261

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 v3 7.9 HIGH
CVSS v2.0 3.3 LOW

7.9^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.5 / Impact : 5.8

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope CHANGED

3.3^/10

CVSS v2.0 : LOW

Vector : AV:L/AC:M/Au:N/C:P/I:P/A:N

Exploitability : 3.4 / Impact : 4.9

Access Vector LOCAL

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact NONE

References

Link	Resource
https://github.com/jupyterhub/systemdspawner/blob/master/CHANGELOG.md#v015	Release Notes Third Party Advisory
https://github.com/jupyterhub/systemdspawner/commit/a4d08fd2ade1cfd0ef2c29dc221e649345f23580	Patch Third Party Advisory
https://github.com/jupyterhub/systemdspawner/security/advisories/GHSA-cg54-gpgr-4rm6	Third Party Advisory
https://pypi.org/project/jupyterhub-systemdspawner/	Product Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:jupyterhub:systemdspawner:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2020-12-09 17:15

Updated : 2020-12-10 21:46

NVD link : CVE-2020-26261

Mitre link : CVE-2020-26261

CVE.ORG link : CVE-2020-26261

JSON object : View

Products Affected

jupyterhub

systemdspawner

CWE

CWE-668

Exposure of Resource to Wrong Sphere

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