CVE-2020-27826
First published: Mon Dec 07 2020(Updated: )
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.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/keycloak | <12.0.0 | 12.0.0 |
| redhat/rh-sso7-keycloak | <0:9.0.10-1.redhat_00001.1.el6 | 0:9.0.10-1.redhat_00001.1.el6 |
| redhat/rh-sso7-keycloak | <0:9.0.10-1.redhat_00001.1.el7 | 0:9.0.10-1.redhat_00001.1.el7 |
| redhat/rh-sso7-keycloak | <0:9.0.10-1.redhat_00001.1.el8 | 0:9.0.10-1.redhat_00001.1.el8 |
| Redhat Keycloak | <12.0.0 | |
| Redhat Single Sign-on | ||
| Redhat Single Sign-on | =7.4 | |
| Redhat Single Sign-on | =7.4.4 |
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi?id=1905089
- https://issues.redhat.com/browse/KEYCLOAK-16468
- https://access.redhat.com/errata/RHSA-2020:5526
- https://access.redhat.com/errata/RHSA-2020:5527
- https://access.redhat.com/errata/RHSA-2020:5528
- https://access.redhat.com/errata/RHSA-2020:5533
- https://access.redhat.com/security/cve/cve-2020-27826
- https://www.cve.org/CVERecord?id=CVE-2020-27826 https://nvd.nist.gov/vuln/detail/CVE-2020-27826
Parent vulnerabilities
(Appears in the following advisories)
Frequently Asked Questions
What is the vulnerability ID?
The vulnerability ID is CVE-2020-27826.
What is the severity of CVE-2020-27826?
The severity of CVE-2020-27826 is medium.
How does CVE-2020-27826 impact Keycloak?
CVE-2020-27826 allows an attacker to change its own NameID attribute to impersonate the admin user for any particular application in Keycloak.
Which versions of Keycloak are affected by CVE-2020-27826?
Keycloak versions before 12.0.0 are affected by CVE-2020-27826.
How can I fix CVE-2020-27826 in Keycloak?
To fix CVE-2020-27826 in Keycloak, you should update to version 12.0.0 or later.
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