Vulnerability 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 Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Kiali | Kiali | < 1.31.0 |
Related Weaknesses (CWE)
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1937171Issue TrackingPatchThird Party Advisory
- https://kiali.io/news/security-bulletins/kiali-security-002/Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1937171Issue TrackingPatchThird Party Advisory
- https://kiali.io/news/security-bulletins/kiali-security-002/Vendor Advisory
FAQ
What is CVE-2021-20278?
CVE-2021-20278 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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 valida...
How severe is CVE-2021-20278?
CVE-2021-20278 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-20278?
Check the references section above for vendor advisories and patch information. Affected products include: Kiali Kiali.