漏洞描述
In all Kubernetes versions prior to v1.10.11, v1.11.5, and v1.12.3, incorrect handling of error responses to proxied upgrade requests in the kube-apiserver allowed specially crafted requests to establish a connection through the Kubernetes API server to backend servers, then send arbitrary requests over the same connection directly to the backend, authenticated with the Kubernetes API server's TLS credentials used to establish the backend connection.
影响产品
修复建议
建议关注厂商安全公告,及时升级至已修复版本,并结合实际资产暴露情况采取缓解措施。
参考链接
www.coalfire.comhttps://www.coalfire.com/The-Coalfire-Blog/December-2018/Kubernetes-Vulnerability-What-You-Can-Should-Do↗github.comhttps://github.com/kubernetes/kubernetes/issues/71411↗www.openwall.comhttp://www.openwall.com/lists/oss-security/2019/07/06/3↗security.netapp.comhttps://security.netapp.com/advisory/ntap-20190416-0001/↗access.redhat.comhttps://access.redhat.com/errata/RHSA-2018:3549↗groups.google.comhttps://groups.google.com/forum/#%21topic/kubernetes-announce/GVllWCg6L88↗access.redhat.comhttps://access.redhat.com/errata/RHSA-2018:3598↗www.securityfocus.comhttp://www.securityfocus.com/bid/106068↗access.redhat.comhttps://access.redhat.com/errata/RHSA-2018:3754↗lists.opensuse.orghttp://lists.opensuse.org/opensuse-security-announce/2020-04/msg00041.html↗access.redhat.comhttps://access.redhat.com/errata/RHSA-2018:3624↗access.redhat.comhttps://access.redhat.com/errata/RHSA-2018:3742↗access.redhat.comhttps://access.redhat.com/errata/RHSA-2018:3752↗www.openwall.comhttp://www.openwall.com/lists/oss-security/2019/07/06/4↗access.redhat.comhttps://access.redhat.com/errata/RHSA-2018:3537↗access.redhat.comhttps://access.redhat.com/errata/RHSA-2018:3551↗www.openwall.comhttp://www.openwall.com/lists/oss-security/2019/06/28/2↗