Auth bypass in Doorkeeper-Gem Doorkeeper
CVE-2023-34246
Doorkeeper is an OAuth 2 provider for Ruby on Rails / Grape. Prior to version 5.6.6, Doorkeeper automatically processes authorization requests without user consent for public clients that have been previous approved. Public clients are inherently vulnerable to impersonation, their identity cannot be assured. This issue is fixed in version 5.6.6.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.2 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.007 (52.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 52.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
- Doorkeeper-Gem Doorkeeper — versions < 5.6.6
- Doorkeeper Project
Weakness classification (CWE)
References
- github.com/doorkeeper-gem/doorkeeper/security/advisories/GHSA-7w2c-w47h-789w (Vendor Advisory)
- github.com/doorkeeper-gem/doorkeeper/issues/1589 (Exploit, Issue Tracking)
- github.com/doorkeeper-gem/doorkeeper/pull/1646 (Patch)
- github.com/doorkeeper-gem/doorkeeper/releases/tag/v5.6.6 (Release Notes)
- www.rfc-editor.org/rfc/rfc8252 (Technical Description)
- lists.debian.org/debian-lts-announce/2023/07/msg00016.html
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2023-34246?
- CVE-2023-34246 is a medium-severity vulnerability in Doorkeeper-Gem Doorkeeper, classified under Improper Authentication. CVSS score: 4.2/10. Published 2023-06-12.
- How severe is CVE-2023-34246?
- Medium severity. CVSS v3 base score is 4.2 out of 10.