CVE-2020-26261

CVSS V2 Low 3.3 CVSS V3 High 7.9
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
Overview
  • CVE ID
  • CVE-2020-26261
  • Assigner
  • security-advisories@github.com
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2020-12-09T17:15:30
  • Last Modified Date
  • 2020-12-10T21:46:28
Weakness Enumerations
CWE URL
CWE-668 http://cwe.mitre.org/data/definitions/668.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:jupyterhub:systemdspawner:*:*:*:*:*:*:*:* 1 OR 0.15
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:L/AC:M/Au:N/C:P/I:P/A:N
  • Access Vector
  • LOCAL
  • Access Compatibility
  • MEDIUM
  • Authentication
  • NONE
  • Confidentiality Impact
  • PARTIAL
  • Integrity Impact
  • PARTIAL
  • Availability Impact
  • NONE
  • Base Score
  • 3.3
  • Severity
  • LOW
  • Exploitability Score
  • 3.4
  • Impact Score
  • 4.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
  • Attack Vector
  • LOCAL
  • Attack Compatibility
  • LOW
  • Privileges Required
  • LOW
  • User Interaction
  • REQUIRED
  • Scope
  • CHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • NONE
  • Base Score
  • 7.9
  • Base Severity
  • HIGH
  • Exploitability Score
  • 1.5
  • Impact Score
  • 5.8
References
Reference URL Reference Tags
https://github.com/jupyterhub/systemdspawner/security/advisories/GHSA-cg54-gpgr-4rm6 Third Party Advisory
https://github.com/jupyterhub/systemdspawner/commit/a4d08fd2ade1cfd0ef2c29dc221e649345f23580 Patch Third Party Advisory
https://pypi.org/project/jupyterhub-systemdspawner/ Product Third Party Advisory
https://github.com/jupyterhub/systemdspawner/blob/master/CHANGELOG.md#v015 Release Notes Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2020-26261
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-26261
History
Created Old Value New Value Data Type Notes
2022-05-10 07:30:41 Added to TrackCVE
2022-12-05 17:50:22 2020-12-09T17:15Z 2020-12-09T17:15:30 CVE Published Date updated
2022-12-05 17:50:22 2020-12-10T21:46:28 CVE Modified Date updated
2022-12-05 17:50:22 Analyzed Vulnerability Status updated