Headline
CVE-2022-39278: Announcing Istio 1.13.9
Istio is an open platform-independent service mesh that provides traffic management, policy enforcement, and telemetry collection. Prior to versions 1.15.2, 1.14.5, and 1.13.9, the Istio control plane, istiod, is vulnerable to a request processing error, allowing a malicious attacker that sends a specially crafted or oversized message which results in the control plane crashing when the Kubernetes validating or mutating webhook service is exposed publicly. This endpoint is served over TLS port 15017, but does not require any authentication from the attacker. For simple installations, Istiod is typically only reachable from within the cluster, limiting the blast radius. However, for some deployments, especially external istiod topologies, this port is exposed over the public internet. Versions 1.15.2, 1.14.5, and 1.13.9 contain patches for this issue. There are no effective workarounds, beyond upgrading. This bug is due to an error in regexp.Compile
in Go.
Istio 1.13.9 patch release.
This release contains a patch for CVE-2022-41715 and bug fixes to improve robustness. This release note describes what is different between Istio 1.13.8 and Istio 1.13.9.
Security update
- Patch for CVE-2022-41715. Replaces all uses of stdlib regexp with the Go 1.19.2 stdlib implementation. This will guard against DOS via malformed regular expressions.
Changes
Fixed an issue where the user can not delete the Istio Operator resource with revision if istiod is not running. (Issue #40796)
Fixed a bug where the return dynamically generated by jwks was not base64 encoded, causing Envoy to fail to parse it.
Fixed an issue where a root namespace Sidecar configuration would be ignored.
Fixed the gateway API integration to not fail when the v1alpha2 version is removed.
1.13.8
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