CVE-2018-7206

Description

An issue was discovered in Project Jupyter JupyterHub OAuthenticator 0.6.x before 0.6.2 and 0.7.x before 0.7.3. When using JupyterHub with GitLab group whitelisting for access control, group membership was not checked correctly, allowing members not in the whitelisted groups to create accounts on the Hub. (Users were not allowed to access other users' accounts, but could create their own accounts on the Hub linked to their GitLab account. GitLab authentication not using gitlab_group_whitelist is unaffected. No other Authenticators are affected.)

8.8

CVSS

Severity: High

CVSS 3.1 •

CVSS 2.0 •

EPSS 0.69% Top 30%

Vendor Advisory github.com

Affected: n/a n/a

References

Link	Tags
https://github.com/jupyterhub/oauthenticator/blob/8499dc2/CHANGELOG.md#073---2018-02-16	release notes vendor advisory
https://github.com/jupyterhub/oauthenticator/commit/1845c0e4b1bff3462c91c3108c85205acd3c75a2	patch
https://blog.jupyter.org/security-fix-for-jupyterhub-gitlab-oauthenticator-7b14571d1f76	third party advisory

Frequently Asked Questions

What is the severity of CVE-2018-7206?: CVE-2018-7206 has been scored as a high severity vulnerability.
How to fix CVE-2018-7206?: To fix CVE-2018-7206, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-7206 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2018-7206 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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