Impact
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.
Workarounds
- Upgrade to the latest 1.12.2 or;
- Do 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.
For more information
If you have any questions or comments about this advisory, please email us at istio-security-vulnerability-reports@googlegroups.com
Aakash2017 Analyst
yangminzhu Analyst
Impact
The authorization policy with
hostsandnotHostsmight 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
hostsandnotHostsfields 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 thehostsandnotHostsfields 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.Workarounds
hostsornotHostsfield in authorization policy.For more information
If you have any questions or comments about this advisory, please email us at istio-security-vulnerability-reports@googlegroups.com