Open Redirect in Ory Fosite
CVE-2020-15233
ORY Fosite is a security first OAuth2 & OpenID Connect framework for Go. In Fosite from version 0.30.2 and before version 0.34.1, there is an issue in which an an attacker can override the registered redirect URL by performing an OAuth flow and requesting a redirect URL that is to the loopback adapter. Attackers can provide both custom URL query parameters to their loopback redirect URL, as well as actually overriding the host of the registered redirect URL. These attacks are only applicable in scenarios where the attacker has access over the loopback interface. This vulnerability has been patched in ORY Fosite v0.34.1.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.008 (54.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 55th percentile — 54.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000
Affected products
- Ory Fosite — versions < 0.34.1
Weakness classification (CWE)
References
- github.com/ory/fosite/commit/cdee51ebe721bfc8acca0fd0b86b030ca70867bf (Patch, Third Party Advisory)
- github.com/ory/fosite/security/advisories/GHSA-rfq3-w54c-f9q5 (Third Party Advisory)
Frequently asked questions
- What is CVE-2020-15233?
- CVE-2020-15233 is a medium-severity vulnerability in Ory Fosite, classified under Improper Input Validation. CVSS score: 6.1/10. Published 2020-10-02.
- How severe is CVE-2020-15233?
- Medium severity. CVSS v3 base score is 6.1 out of 10.