Vulnerability Information
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Vulnerability Title
Unauthenticated control plane denial of service attack in Istio
Vulnerability Description
Istio is an open platform to connect, manage, and secure microservices. In affected versions the Istio control plane, istiod, is vulnerable to a request processing error, allowing a malicious attacker that sends a specially crafted message which results in the control plane crashing when the validating webhook for a cluster 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](https://istio.io/latest/docs/setup/install/external-controlplane/) topologies, this port is exposed over the public internet. This issue has been patched in versions 1.13.2, 1.12.5 and 1.11.8. Users are advised to upgrade. Users unable to upgrade should disable access to a validating webhook that is exposed to the public internet or restrict the set of IP addresses that can query it to a set of known, trusted entities.
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Vulnerability Title
Istio 资源管理错误漏洞
Vulnerability Description
Istio是一套连接、管理和保护微服务的开放平台。 Istio 存在资源管理错误漏洞，该漏洞允许恶意攻击者发送特制消息，从而在集群的验证 webhook 公开暴露时导致控制平面崩溃。
CVSS Information
N/A
Vulnerability Type
N/A