GHSA-5xvc-vgmp-jgc3
Suggest an improvement- Source
- https://github.com/advisories/GHSA-5xvc-vgmp-jgc3
- Import Source
- https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/10/GHSA-5xvc-vgmp-jgc3/GHSA-5xvc-vgmp-jgc3.json
- JSON Data
- https://api.osv.dev/v1/vulns/GHSA-5xvc-vgmp-jgc3
- Aliases
- Related
- Published
- 2021-10-28T23:13:57Z
- Modified
- 2025-02-14T05:29:45.943355Z
- Severity
-
- 9.1 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N CVSS Calculator
- 9.3 (Critical) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N CVSS Calculator
- Summary
- Improper Access Control in jupyterhub-firstuseauthenticator
- Details
-
Impact
When JupyterHub is used with FirstUseAuthenticator, the vulnerability allows unauthorized access to any user's account if
create_users=Trueand the username is known or guessed.Patches
Upgrade to jupyterhub-firstuseauthenticator to 1.0, or apply patch https://github.com/jupyterhub/firstuseauthenticator/pull/38.patch
Workarounds
If you cannot upgrade, there is no complete workaround, but it can be mitigated.
If you cannot upgrade yet, you can disable user creation with
c.FirstUseAuthenticator.create_users = False, which will only allow login with fully normalized usernames for already existing users prior to jupyterhub-firstuserauthenticator 1.0. If any users have never logged in with their normalized username (i.e. lowercase), they will still be vulnerable until you can patch or upgrade. - Database specific
{ "cwe_ids": [ "CWE-284" ], "nvd_published_at": "2021-10-28T20:15:00Z", "github_reviewed": true, "severity": "CRITICAL", "github_reviewed_at": "2021-10-28T16:52:16Z" }- References
-
- https://github.com/jupyterhub/firstuseauthenticator/security/advisories/GHSA-5xvc-vgmp-jgc3
- https://nvd.nist.gov/vuln/detail/CVE-2021-41194
- https://github.com/jupyterhub/firstuseauthenticator/pull/38
- https://github.com/jupyterhub/firstuseauthenticator/pull/38.patch
- https://github.com/jupyterhub/firstuseauthenticator/pull/38/commits/32b21898fb2b53b1a2e36270de6854ad70e9e9bf
- https://github.com/jupyterhub/firstuseauthenticator/pull/38/commits/9e200d974e0cb85d828a6afedb8ab90a37878f28
- https://github.com/jupyterhub/firstuseauthenticator/commit/953418e2450dbc2d854e332350849533b0ebc7ba
- https://github.com/jupyterhub/firstuseauthenticator
- https://github.com/pypa/advisory-database/tree/main/vulns/jupyterhub-firstuseauthenticator/PYSEC-2021-384.yaml
Affected packages
PyPI / jupyterhub-firstuseauthenticator
Package
- Name
- jupyterhub-firstuseauthenticator
- View open source insights on deps.dev
- Purl
- pkg:pypi/jupyterhub-firstuseauthenticator