Open Redirect in Openid Connect
CVE-2019-9837
Doorkeeper::OpenidConnect (aka the OpenID Connect extension for Doorkeeper) 1.4.x and 1.5.x before 1.5.4 has an open redirect via the redirect_uri field in an OAuth authorization request (that results in an error response) with the 'openid' scope and a prompt=none value. This allows phishing attacks against the authorization flow.
Vulnerability class: Open Redirect
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.013 (70.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 70th percentile — 70.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/doorkeeper-gem/doorkeeper-openid_connect/pull/66 (Patch, Third Party Advisory)
- github.com/doorkeeper-gem/doorkeeper-openid_connect/issues/61 (Third Party Advisory)
- github.com/doorkeeper-gem/doorkeeper-openid_connect/blob/master/CHANGELOG.md (Third Party Advisory)
Frequently asked questions
- What is CVE-2019-9837?
- CVE-2019-9837 is a medium-severity vulnerability in Openid Connect, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 6.1/10. Published 2019-03-21.
- How severe is CVE-2019-9837?
- Medium severity. CVSS v3 base score is 6.1 out of 10.