What is CVE-2021-20278?

CVE-2021-20278 is an authentication bypass vulnerability found in Kiali versions before 1.31.0 when the authentication strategy OpenID is used.

How does CVE-2021-20278 affect Kiali?

CVE-2021-20278 affects Kiali versions before 1.31.0 when the authentication strategy OpenID is used.

What is the severity rating of CVE-2021-20278?

The severity rating of CVE-2021-20278 is medium with a CVSS score of 6.5.

How can I mitigate the vulnerability in Kiali?

To mitigate the vulnerability in Kiali, update to version 1.31.0 or newer.

Are there any references for CVE-2021-20278?

Yes, you can find more information about CVE-2021-20278 at the following references: - [Bugzilla](https://bugzilla.redhat.com/show_bug.cgi?id=1937171) - [Kiali Security Bulletin](https://kiali.io/news/security-bulletins/kiali-security-002/)

Vulnerability/
CVE-2021-20278

medium

6.5

CWE

287 290

10/3/2021

28/5/2021

3/8/2024

CVE-2021-20278

First published: Wed Mar 10 2021(Updated: )

A vulnerability was found in kiali v1.30.0 when the authentication strategy `OpenID` is used. When RBAC is enabled, Kiali assumes that some of the token validation is handled by the underlying cluster. Hence, when OpenID `implicit flow` is used with RBAC turned off, this token validation doesn't occur and may allow a malicious user to bypass the authentication.

Credit: secalert@redhat.com

Affected Software	Affected Version	How to fix
Kiali Kiali	<1.31.0
redhat/kiali	<1.31.0	1.31.0

Remedy

https://bugzilla.redhat.com/show_bug.cgi?id=1937171

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Reference Links

Frequently Asked Questions

What is CVE-2021-20278?
CVE-2021-20278 is an authentication bypass vulnerability found in Kiali versions before 1.31.0 when the authentication strategy OpenID is used.
How does CVE-2021-20278 affect Kiali?
CVE-2021-20278 affects Kiali versions before 1.31.0 when the authentication strategy OpenID is used.
What is the severity rating of CVE-2021-20278?
The severity rating of CVE-2021-20278 is medium with a CVSS score of 6.5.
How can I mitigate the vulnerability in Kiali?
To mitigate the vulnerability in Kiali, update to version 1.31.0 or newer.
Are there any references for CVE-2021-20278?
Yes, you can find more information about CVE-2021-20278 at the following references: - [Bugzilla](https://bugzilla.redhat.com/show_bug.cgi?id=1937171) - [Kiali Security Bulletin](https://kiali.io/news/security-bulletins/kiali-security-002/)

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