Vulnerability Information
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Vulnerability Title
cert-manager-controller DoS via Specially Crafted DNS Response
Vulnerability Description
cert-manager adds certificates and certificate issuers as resource types in Kubernetes clusters, and simplifies the process of obtaining, renewing and using those certificates. In versions from 1.18.0 to before 1.18.5 and from 1.19.0 to before 1.19.3, the cert-manager-controller performs DNS lookups during ACME DNS-01 processing (for zone discovery and propagation self-checks). By default, these lookups use standard unencrypted DNS. An attacker who can intercept and modify DNS traffic from the cert-manager-controller pod can insert a crafted entry into cert-manager's DNS cache. Accessing this entry will trigger a panic, resulting in denial‑of‑service (DoS) of the cert-manager controller. The issue can also be exploited if the authoritative DNS server for the domain being validated is controlled by a malicious actor. This issue has been patched in versions 1.18.5 and 1.19.3.
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Vulnerability Type
对数组索引的验证不恰当
Vulnerability Title
cert-manager 代码问题漏洞
Vulnerability Description
cert-manager是cert-manager开源的一个证书管理器。将证书和证书颁发者添加为 Kubernetes 集群中的资源类型，并简化了这些证书的获取、续订和使用过程。 cert-manager 1.18.0版本至1.18.5之前版本和1.19.0版本至1.19.3之前版本存在代码问题漏洞，该漏洞源于DNS查找使用未加密DNS，可能导致插入特制条目触发内核崩溃，造成拒绝服务。
CVSS Information
N/A
Vulnerability Type
N/A