Announcing Istio 1.1.7

We're pleased to announce the availability of Istio 1.1.7. Please see below for what's changed.

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Security update

This release fixes CVE 2019-12243.

Bug fixes

• Fix issue where two gateways with overlapping hosts, created at the same second, can cause Pilot to fail to generate routes correctly and lead to Envoy listeners stuck indefinitely at startup in a warming state.
• Improve the robustness of the SDS node agent: if Envoy sends a SDS request with an empty ResourceNames, ignore it and wait for the next request instead of closing the connection (Issue 13853).
• In prior releases Pilot automatically injected the experimental envoy.filters.network.mysql_proxy filter into the outbound filter chain if the service port name is mysql. This was surprising and caused issues for some operators, so Pilot will now automatically inject the envoy.filters.network.mysql_proxy filter only if the PILOT_ENABLE_MYSQL_FILTER environment variable is set to 1 (Issue 13998).
• Fix issue where Mixer policy checks were incorrectly disabled for TCP (Issue 13868).

Small enhancements

• Add --applicationPorts option to the ingressgateway Helm charts. When set to a comma-delimited list of ports, readiness checks will fail until all the ports become active. When configured, traffic will not be sent to Envoys stuck in the warming state.
• Increase memory limit in the ingressgateway Helm chart to 1GB and add resource request and limits to the SDS node agent container to support HPA autoscaling.