CVE-2021-3637
First published: Mon Dec 14 2020(Updated: )
A flaw was found in keycloak-model-infinispan in keycloak versions before 14.0.0 where authenticationSessions map in RootAuthenticationSessionEntity grows boundlessly which could lead to a DoS attack.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Redhat Keycloak | <14.0.0 | |
| Redhat Single Sign-on | =7.0 | |
| redhat/rh-sso7-keycloak | <0:9.0.15-1.redhat_00002.1.el6 | 0:9.0.15-1.redhat_00002.1.el6 |
| redhat/rh-sso7-keycloak | <0:9.0.15-1.redhat_00002.1.el7 | 0:9.0.15-1.redhat_00002.1.el7 |
| redhat/rh-sso7-keycloak | <0:9.0.15-1.redhat_00002.1.el8 | 0:9.0.15-1.redhat_00002.1.el8 |
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi?id=1979638
- https://issues.redhat.com/browse/KEYCLOAK-16616
- https://access.redhat.com/errata/RHSA-2021:3528
- https://access.redhat.com/errata/RHSA-2021:3529
- https://access.redhat.com/errata/RHSA-2021:3527
- https://access.redhat.com/errata/RHSA-2021:3534
- https://access.redhat.com/security/cve/cve-2021-3637
- https://www.cve.org/CVERecord?id=CVE-2021-3637 https://nvd.nist.gov/vuln/detail/CVE-2021-3637
Parent vulnerabilities
(Appears in the following advisories)
Frequently Asked Questions
What is CVE-2021-3637?
CVE-2021-3637 is a vulnerability found in keycloak-model-infinispan where the authenticationSessions map in RootAuthenticationSessionEntity grows boundlessly, leading to a DoS attack.
Which versions of Keycloak are affected by CVE-2021-3637?
Keycloak versions before 14.0.0 are affected by CVE-2021-3637.
What is the severity of CVE-2021-3637?
CVE-2021-3637 has a severity level of high (7 out of 10).
How can I fix CVE-2021-3637?
To fix CVE-2021-3637, update Keycloak to version 14.0.0 or later.
Where can I find more information about CVE-2021-3637?
You can find more information about CVE-2021-3637 at the following references: [KEYCLOAK-16616](https://issues.redhat.com/browse/KEYCLOAK-16616), [RHSA-2021:3528](https://access.redhat.com/errata/RHSA-2021:3528), [RHSA-2021:3529](https://access.redhat.com/errata/RHSA-2021:3529).
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