CVE-2022-21679: Authorization Policy bypass in Istio
First published: Wed Jan 19 2022(Updated: )
Istio is an open platform to connect, manage, and secure microservices. In Istio 1.12.0 and 1.12.1 The authorization policy with hosts and notHosts might be accidentally bypassed for ALLOW action or rejected unexpectedly for DENY action during the upgrade from 1.11 to 1.12.0/1.12.1. Istio 1.12 supports the hosts and notHosts fields in authorization policy with a new Envoy API shipped with the 1.12 data plane. A bug in the 1.12.0 and 1.12.1 incorrectly uses the new Envoy API with the 1.11 data plane. This will cause the hosts and notHosts fields to be always matched regardless of the actual value of the host header when mixing 1.12.0/1.12.1 control plane and 1.11 data plane. Users are advised to upgrade or to not mix the 1.12.0/1.12.1 control plane with 1.11 data plane if using hosts or notHosts field in authorization policy.
Credit: security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Istio Istio | =1.12.0 | |
| Istio Istio | =1.12.0-alpha0 | |
| Istio Istio | =1.12.0-alpha1 | |
| Istio Istio | =1.12.0-alpha5 | |
| Istio Istio | =1.12.0-beta0 | |
| Istio Istio | =1.12.0-beta1 | |
| Istio Istio | =1.12.0-beta2 | |
| Istio Istio | =1.12.0-rc1 | |
| Istio Istio | =1.12.1 |
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Reference Links
Frequently Asked Questions
What is the vulnerability ID for this Istio vulnerability?
The vulnerability ID for this Istio vulnerability is CVE-2022-21679.
What is Istio?
Istio is an open platform to connect, manage, and secure microservices.
What is the severity of CVE-2022-21679?
The severity of CVE-2022-21679 is critical.
How does CVE-2022-21679 affect Istio?
CVE-2022-21679 affects Istio versions 1.12.0 and 1.12.1.
How can I fix CVE-2022-21679?
To fix CVE-2022-21679, you should upgrade your Istio installation to version 1.12.2 or higher.
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- version/istio istio/1.12.0-alpha0
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