high8.8
CVE-2020-27826
Authentication Bypass in keycloak
Impact
A flaw was found in Keycloak before version 12.0.0 where it is possible to update the user's metadata attributes using Account REST API. This flaw allows an attacker to change its own NameID attribute to impersonate the admin user for any particular application.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| maven | org.keycloak:keycloak-core | < 12.0.0 | 12.0.0 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Redhat | Keycloak | before 12.0.0 |
| Redhat | Single Sign-On | All versions Versions 7.4, 7.4.4 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1905089
- https://github.com/advisories/GHSA-m9cj-v55f-8x26
- https://nvd.nist.gov/vuln/detail/CVE-2020-27826
- https://github.com/keycloak/keycloak/commit/dae4a3eaf26590b8d441b8e4bec3b700ee303b72
- https://access.redhat.com/security/cve/cve-2020-27826