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. Reference: https://github.com/istio/istio/security/advisories/GHSA-86vr-4wcv-mm9w
The github advisory link is correct, but within there it links to an older irrelevant istio security announcement. I've added the correct one as an external reference.
Created golang-istio-pkg tracking bugs for this issue: Affects: fedora-all [bug 2148658]
This issue has been addressed in the following products: Red Hat OpenShift Service Mesh 2.3 for RHEL 8 Via RHSA-2023:0542 https://access.redhat.com/errata/RHSA-2023:0542
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s): https://access.redhat.com/security/cve/cve-2022-39278