redhat openshift_container_platform 认证机制不恰当

CVE编号

CVE-2021-20238

利用情况

暂无

补丁情况

N/A

披露时间

2022-04-02

漏洞描述

It was found in OpenShift Container Platform 4 that ignition config, served by the Machine Config Server, can be accessed externally from clusters without authentication. The MCS endpoint (port 22623) provides ignition configuration used for bootstrapping Nodes and can include some sensitive data, e.g. registry pull secrets. There are two scenarios where this data can be accessed. The first is on Baremetal, OpenStack, Ovirt, Vsphere and KubeVirt deployments which do not have a separate internal API endpoint and allow access from outside the cluster to port 22623 from the standard OpenShift API Virtual IP address. The second is on cloud deployments when using unsupported network plugins, which do not create iptables rules that prevent to port 22623. In this scenario, the ignition config is exposed to all pods within the cluster and cannot be accessed externally.

解决建议

建议您更新当前系统或软件至最新版，完成漏洞的修复。

参考链接
https://bugzilla.redhat.com/show_bug.cgi?id=1926568

受影响软件情况

#	类型	厂商	产品	版本	影响面
1
	运行在以下环境
	应用	redhat	openshift_container_platform	4.0	-
	运行在以下环境
	应用	redhat	openshift_machine-config-operator	*		Up to (including) 4.9.0

CVSS3评分 3.7

• 攻击路径 网络
• 攻击复杂度 高
• 权限要求 无
• 影响范围 未更改
• 用户交互 无
• 可用性 无
• 保密性 低
• 完整性 无

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N CWE-ID 漏洞类型 CWE-287 认证机制不恰当