Vulnerability Details 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
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 37.9%
CVSS Severity
CVSS v3 Score 7.9
CVSS v2 Score 3.3
References
- https://github.com/jupyterhub/systemdspawner/blob/master/CHANGELOG.md#v015
- https://github.com/jupyterhub/systemdspawner/commit/a4d08fd2ade1cfd0ef2c29dc221e649345f23580
- https://github.com/jupyterhub/systemdspawner/security/advisories/GHSA-cg54-gpgr-4rm6
- https://pypi.org/project/jupyterhub-systemdspawner/
- https://github.com/jupyterhub/systemdspawner/blob/master/CHANGELOG.md#v015
- https://github.com/jupyterhub/systemdspawner/commit/a4d08fd2ade1cfd0ef2c29dc221e649345f23580
- https://github.com/jupyterhub/systemdspawner/security/advisories/GHSA-cg54-gpgr-4rm6
- https://pypi.org/project/jupyterhub-systemdspawner/
Products affected by CVE-2020-26261
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cpe:2.3:a:jupyterhub:systemdspawner:0.10
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cpe:2.3:a:jupyterhub:systemdspawner:0.11
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cpe:2.3:a:jupyterhub:systemdspawner:0.12
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cpe:2.3:a:jupyterhub:systemdspawner:0.13
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cpe:2.3:a:jupyterhub:systemdspawner:0.14
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cpe:2.3:a:jupyterhub:systemdspawner:0.9
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cpe:2.3:a:jupyterhub:systemdspawner:0.9.1
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cpe:2.3:a:jupyterhub:systemdspawner:0.9.10
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cpe:2.3:a:jupyterhub:systemdspawner:0.9.11
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cpe:2.3:a:jupyterhub:systemdspawner:0.9.12
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cpe:2.3:a:jupyterhub:systemdspawner:0.9.5
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cpe:2.3:a:jupyterhub:systemdspawner:0.9.6
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cpe:2.3:a:jupyterhub:systemdspawner:0.9.7
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cpe:2.3:a:jupyterhub:systemdspawner:0.9.8
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cpe:2.3:a:jupyterhub:systemdspawner:0.9.9