Vulnerability in Jupyter Oauthenticator
CVE-2018-7206
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.)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.018 (77.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 77th percentile — 77.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.018 · newest: 0.018 · change: 0.000
Affected products
- Jupyter Oauthenticator — versions 0.6.0, 0.6.1, 0.7.0
Public proof-of-concept exploits
References
- github.com/jupyterhub/oauthenticator/blob/8499dc2/CHANGELOG.md (Release Notes, Vendor Advisory)
- github.com/jupyterhub/oauthenticator/commit/1845c0e4b1bff3462c91c3108c85205acd3… (Patch)
- blog.jupyter.org/security-fix-for-jupyterhub-gitlab-oauthenticator-7b14571d1f76 (Third Party Advisory)
Frequently asked questions
- What is CVE-2018-7206?
- CVE-2018-7206 is a high-severity vulnerability in Jupyter Oauthenticator. CVSS score: 8.8/10. Published 2018-02-18.
- How severe is CVE-2018-7206?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2018-7206 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.