CVE-2021-20278 Information

Description

An authentication bypass vulnerability was found in Kiali in versions before 1.31.0 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. 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.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Reference

https://bugzilla.redhat.com/show_bug.cgi?id=1937171 https://kiali.io/news/security-bulletins/kiali-security-002/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

LOW

Availability Impact

LOW

Base Score

NONE

Base Severity

6.5