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CVE-2024-12401— Cert-manager: potential dos when parsing specially crafted pem inputs

Quick assessment

Affected
CVE-2024-12401
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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存在输入验证错误漏洞，该漏洞源于攻击者可以修改cert-manager读取的PEM数据，从而有效地为集群中的cert-manager创建拒绝服务(DoS)向量。

CVSS 4.4 · Medium EPSS 0.65% · P48

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 23

VendorProduct Version RangeStatus
None None ≤ 1.12.14 affected
1.13.0-alpha.0≤ 1.15.4 affected
1.16.0-alpha.0≤ 1.16.2 affected
Red Hat cert-manager Operator for Red Hat OpenShift any affected
any affected
any affected
any affected
Red Hat Cryostat 3 any affected
Red Hat Multicluster Engine for Kubernetes any affected
any affected
Red Hat OpenShift Serverless any affected
any affected
any affected
any affected
any affected
any affected
any affected
Red Hat Red Hat Connectivity Link 1 any affected
any affected
Red Hat Red Hat OpenShift Container Platform 4 any affected
any affected
Red Hat Red Hat Openshift Data Foundation 4 any affected
Red Hat Red Hat OpenShift GitOps any affected

I. Basic Information for CVE-2024-12401

Vulnerability Information
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Vulnerability Title
Cert-manager: potential dos when parsing specially crafted pem inputs
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in the cert-manager package. This flaw allows an attacker who can modify PEM data that the cert-manager reads, for example, in a Secret resource, to use large amounts of CPU in the cert-manager controller pod to effectively create a denial-of-service (DoS) vector for the cert-manager in the cluster.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
cert-manager 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
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存在输入验证错误漏洞，该漏洞源于攻击者可以修改cert-manager读取的PEM数据，从而有效地为集群中的cert-manager创建拒绝服务(DoS)向量。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
- - 0 ~ 1.12.14 -
Red Hat cert-manager Operator for Red Hat OpenShift - cpe:/a:redhat:cert_manager:1
Red Hat cert-manager Operator for Red Hat OpenShift - cpe:/a:redhat:cert_manager:1
Red Hat cert-manager Operator for Red Hat OpenShift - cpe:/a:redhat:cert_manager:1
Red Hat cert-manager Operator for Red Hat OpenShift - cpe:/a:redhat:cert_manager:1
Red Hat Cryostat 3 - cpe:/a:redhat:cryostat:3
Red Hat Multicluster Engine for Kubernetes - cpe:/a:redhat:multicluster_engine
Red Hat Multicluster Engine for Kubernetes - cpe:/a:redhat:multicluster_engine
Red Hat OpenShift Serverless - cpe:/a:redhat:serverless:1
Red Hat OpenShift Serverless - cpe:/a:redhat:serverless:1
Red Hat OpenShift Serverless - cpe:/a:redhat:serverless:1
Red Hat OpenShift Serverless - cpe:/a:redhat:serverless:1
Red Hat OpenShift Serverless - cpe:/a:redhat:serverless:1
Red Hat OpenShift Serverless - cpe:/a:redhat:serverless:1
Red Hat OpenShift Serverless - cpe:/a:redhat:serverless:1
Red Hat Red Hat Connectivity Link 1 - cpe:/a:redhat:connectivity_link:1
Red Hat Red Hat Connectivity Link 1 - cpe:/a:redhat:connectivity_link:1
Red Hat Red Hat OpenShift Container Platform 4 - cpe:/a:redhat:openshift:4
Red Hat Red Hat OpenShift Container Platform 4 - cpe:/a:redhat:openshift:4
Red Hat Red Hat Openshift Data Foundation 4 - cpe:/a:redhat:openshift_data_foundation:4
Red Hat Red Hat OpenShift GitOps - cpe:/a:redhat:openshift_gitops:1

II. Public POCs for CVE-2024-12401

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III. Intelligence Information for CVE-2024-12401

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Patches & Fixes for CVE-2024-12401 (4)

Vendor Advisories for CVE-2024-12401 (3)

Other References for CVE-2024-12401 (1)

IV. Related Vulnerabilities

Same weakness: CWE-20

V. Comments for CVE-2024-12401

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