Auth bypass in Redhat 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
EPSS: 0.009 (56.1th percentile) — read the EPSS interpretation.
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.
Affected products
- Redhat Enterprise_linux — versions 6.0, 7.0, 8.0
- Redhat Keycloak
- Redhat Single_sign-on — versions 7.0
- N/a Keycloak — versions Fixed in v15.1.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secalert@redhat.com (Permissions Required, x_refsource_MISC, Vendor Advisory)
- secalert@redhat.com (x_refsource_MISC, Issue Tracking, Vendor Advisory)
- secalert@redhat.com (x_refsource_MISC, Vendor Advisory)
- secalert@redhat.com (Patch, Third Party Advisory, x_refsource_MISC, Issue Tracking)
- secalert@redhat.com (Patch, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-3632?
- CVE-2021-3632 is a high-severity vulnerability in Redhat 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.