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cveGitHub_MCVE-2020-26261
HistoryDec 09, 2020 - 5:15 p.m.

CVE-2020-26261

2020-12-0917:15:30
CWE-668
GitHub_M
web.nvd.nist.gov
43
jupyterhub
systemd
spawner
cve-2020-26261
nvd

CVSS2

3.3

Attack Vector

LOCAL

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

NONE

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

CVSS3

7.9

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

AI Score

7.5

Confidence

High

EPSS

0

Percentile

15.5%

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

Affected configurations

Nvd
Vulners
Node
jupyterhubsystemdspawnerRange<0.15
VendorProductVersionCPE
jupyterhubsystemdspawner*cpe:2.3:a:jupyterhub:systemdspawner:*:*:*:*:*:*:*:*

CNA Affected

[
  {
    "product": "systemdspawner",
    "vendor": "jupyterhub",
    "versions": [
      {
        "status": "affected",
        "version": "< 0.15"
      }
    ]
  }
]

CVSS2

3.3

Attack Vector

LOCAL

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

NONE

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

CVSS3

7.9

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

AI Score

7.5

Confidence

High

EPSS

0

Percentile

15.5%

Related for CVE-2020-26261