CVE-2020-26261
Jupyterhub SystemDSPawner Token Exposure
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
INFO
Published Date :
Dec. 9, 2020, 5:15 p.m.
Last Modified :
Dec. 10, 2020, 9:46 p.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
5.8
Exploitability Score :
1.5
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2020-26261.
| URL | 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 |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2020-26261 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2020-26261 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
Dec. 10, 2020
Action Type Old Value New Value Added CVSS V2 Metadata Victim must voluntarily interact with attack mechanism Added CVSS V2 NIST (AV:L/AC:M/Au:N/C:P/I:P/A:N) Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N Changed Reference Type https://github.com/jupyterhub/systemdspawner/blob/master/CHANGELOG.md#v015 No Types Assigned https://github.com/jupyterhub/systemdspawner/blob/master/CHANGELOG.md#v015 Release Notes, Third Party Advisory Changed Reference Type https://github.com/jupyterhub/systemdspawner/commit/a4d08fd2ade1cfd0ef2c29dc221e649345f23580 No Types Assigned https://github.com/jupyterhub/systemdspawner/commit/a4d08fd2ade1cfd0ef2c29dc221e649345f23580 Patch, Third Party Advisory Changed Reference Type https://github.com/jupyterhub/systemdspawner/security/advisories/GHSA-cg54-gpgr-4rm6 No Types Assigned https://github.com/jupyterhub/systemdspawner/security/advisories/GHSA-cg54-gpgr-4rm6 Third Party Advisory Changed Reference Type https://pypi.org/project/jupyterhub-systemdspawner/ No Types Assigned https://pypi.org/project/jupyterhub-systemdspawner/ Product, Third Party Advisory Added CWE NIST CWE-668 Added CPE Configuration OR *cpe:2.3:a:jupyterhub:systemdspawner:*:*:*:*:*:*:*:* versions up to (excluding) 0.15
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2020-26261 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2020-26261
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.04 }} 0.00%
score
0.12212
percentile