Vulnerability Information
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Vulnerability Title
Segmentation fault leading to crash in Envoy
Vulnerability Description
Envoy is a cloud-native high-performance proxy. Versions of envoy prior to 1.22.1 are subject to a segmentation fault in the GrpcHealthCheckerImpl. Envoy can perform various types of upstream health checking. One of them uses gRPC. Envoy also has a feature which can “hold” (prevent removal) upstream hosts obtained via service discovery until configured active health checking fails. If an attacker controls an upstream host and also controls service discovery of that host (via DNS, the EDS API, etc.), an attacker can crash Envoy by forcing removal of the host from service discovery, and then failing the gRPC health check request. This will crash Envoy via a null pointer dereference. Users are advised to upgrade to resolve this vulnerability. Users unable to upgrade may disable gRPC health checking and/or replace it with a different health checking type as a mitigation.
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Vulnerability Type
空指针解引用
Vulnerability Title
Envoy 代码问题漏洞
Vulnerability Description
Envoy是一款开源的分布式代理服务器。 Envoy 1.22.1 之前的版本存在代码问题漏洞，该漏洞源于使用 gRPC health checking进行健康检查时，攻击者控制的上游服务器可以通过空指针取消引用使 Envoy 崩溃。
CVSS Information
N/A
Vulnerability Type
N/A