Bug 1937171 (CVE-2021-20278) - CVE-2021-20278 kiali: authentication bypass when using the OpenID login strategy
Summary: CVE-2021-20278 kiali: authentication bypass when using the OpenID login strategy
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2021-20278
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks: 1937165
TreeView+ depends on / blocked
 
Reported: 2021-03-10 03:24 UTC by Mark Cooper
Modified: 2023-08-31 23:41 UTC (History)
5 users (show)

Fixed In Version: kiali 1.31.0
Doc Type: If docs needed, set a value
Doc Text:
An authentication bypass vulnerability was found in Kiali 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. When OpenID `implicit flow` is used with RBAC turned off, this token validation doesn't occur, and this allows a malicious user to bypass the authentication.
Clone Of:
Environment:
Last Closed: 2021-03-10 09:05:45 UTC
Embargoed:

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Description Mark Cooper 2021-03-10 03:24:03 UTC 
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.
Comment 1 Mark Cooper 2021-03-10 03:24:06 UTC 
External References:

https://kiali.io/news/security-bulletins/kiali-security-002/
Comment 3 Mark Cooper 2021-03-10 03:39:55 UTC 
Upstream fix: https://github.com/kiali/kiali/commit/19c9b64b76e5daf4fda46f783864cce5e4497a08
Comment 5 Mark Cooper 2021-03-11 00:36:29 UTC 
Acknowledgments:

Name: the Kiali Security Group
Comment 6 RaTasha Tillery-Smith 2021-03-11 13:28:04 UTC 
Statement:

OpenShift ServiceMesh (OSSM) Kiali is configured to delegate authorization to the OpenShift's RBAC user rights and the OpenID authentication strategy is not supported, therefore it is marked `not affected`.
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