Auth bypass in Red Hat Enterprise Linux
CVE-2021-3632
A flaw was found in Keycloak. This vulnerability allows anyone to register a new security device or key when there is not a device already registered for any user by using the WebAuthn password-less login flow.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.011 (65.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 65th percentile — 65.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: +0.000
Affected products
- Red Hat Enterprise Linux — versions 6.0, 7.0, 8.0
- Red Hat Keycloak
- Red Hat Single Sign-On — versions 7.0
- Keycloak — versions Fixed in v15.1.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- issues.redhat.com/browse/KEYCLOAK-18500 (Permissions Required, Vendor Advisory)
- bugzilla.redhat.com/show_bug.cgi (Issue Tracking, Vendor Advisory)
- access.redhat.com/security/cve/CVE-2021-3632 (Vendor Advisory)
- github.com/keycloak/keycloak/pull/8203 (Patch, Third Party Advisory, Issue Tracking)
- github.com/keycloak/keycloak/commit/65480cb5a11630909c086f79d396004499fbd1e4 (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-3632?
- CVE-2021-3632 is a high-severity vulnerability in Red Hat Enterprise Linux, classified under Improper Authentication. CVSS score: 7.5/10. Published 2022-08-26.
- How severe is CVE-2021-3632?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2021-3632 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.