{"id":10601,"date":"2021-06-30T17:22:00","date_gmt":"2021-06-30T17:22:00","guid":{"rendered":"http:\/\/ismiletechnologies.com\/?p=2373"},"modified":"2021-10-11T19:19:49","modified_gmt":"2021-10-11T13:49:49","slug":"kubernetes-security","status":"publish","type":"post","link":"https:\/\/ismiletechnologies.com\/en_us\/cloud-services\/kubernetes-security\/","title":{"rendered":"Kubernetes Security"},"content":{"rendered":"\t\t
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Kubernetes is an open-source container or microservice platform that manages computing, networking, and storage infrastructure workloads. Kubernetes provides a framework to run distributed systems resiliently.\u202f \u202f<\/span>\u00a0<\/span><\/p>

Kubernetes Security Challenges<\/span><\/b>\u00a0<\/span><\/p>

Kubernetes environment security is a major concern for most organizations. Kubernetes configurations are more complex because of cloud-based multi-environment and hybrid deployments. This increases the chances of human error in system administration and can leave organizations vulnerable to cybersecurity incidents.\u202fThe Kubernetes security becomes more challenging owing to the distributed and dynamic nature of the Kubernetes cluster<\/span>\u00a0<\/span><\/p>

\u00a0<\/span>In Feb 2018,\u00a0Telsa\u00a0had a cyberattack on its infrastructure due to misconfigured Kubernetes deployment. The attackers were able to exploit this vulnerability and gain access to Tesla\u2019s larger AWS environment. In June 2018, Weight Watchers had the same exposure in their Kubernetes instance. This allowed the attackers to gain access to sensitive details such as AWS access keys, Kubernetes pod specifications, as well as several Amazon S3 buckets that were holding the company\u2019s data.\u202f Due to incidents like these, organizations are pressured to take strict steps to ensure the security of their Kubernetes clusters.\u00a0<\/span>\u00a0<\/span><\/p>

\u00a0<\/span>Organizations should follow the best practices provided below and look to automate security.\u202f Security Automation\u202f\u202f Tools such as\u00a0Alcide\u00a0provide continuous automation for Kubernetes\u2019s security-related processes.\u00a0Alcide\u00a0Advisor automatically scans for a wide range of compliance, security, and governance risks and vulnerabilities. Then it provides insights and recommendations to ensure\u00a0that\u00a0clusters, nodes, and pods operate within the provided security guidelines and best practices.\u00a0<\/span>\u00a0<\/span><\/p>

\u00a0<\/span><\/p>

Security Recommendations:\u00a0<\/span><\/b>\u00a0<\/span><\/p>

\u00a0<\/span>To ensure the security of a Kubernetes implementation, a set of guidelines that organizations can follow is provided below.\u202f\u202f<\/span>\u00a0<\/span><\/p>

\u00a0<\/span><\/p>

Infrastructure security\u00a0<\/span><\/b>\u00a0<\/span><\/p>

  • Undertake updation of your Kubernetes to the latest version so that the security patches for newly found vulnerabilities can be easily applied<\/span>\u00a0<\/span><\/li>
  • All-access to the Kubernetes control plane should be controlled by a restricted network access control list.\u00a0<\/span>\u00a0<\/span><\/li>
  • Nodes should be configured to only accept connections.\u00a0<\/span>\u00a0<\/span><\/li>
  • Provide the cluster with cloud provider access that follows the principle of least privilege.\u202f Access must be limited to the control plane only.\u202f Encrypt all drives at rest.<\/span>\u00a0<\/span><\/li>
  • Use TLS encryptions for securing the connections between API server and the\u00a0kubelets<\/span>\u00a0<\/span><\/li>
  • Disable anonymous backdoor access through the\u00a0kubelet\u00a0by initiating the\u00a0kubelet\u00a0with\u00a0the\u202f–anonymous-auth=false\u202fflag and use Node\u00a0Restriction admission controller to frame the access limits of\u00a0kubelet<\/span>\u00a0<\/span><\/li>
  • Securely configure the Kubernetes components like\u00a0Kube\u00a0scheduler, the configuration files and the\u00a0Kube\u00a0controller manager<\/span>\u00a0<\/span><\/li>
  • Ensure security of\u00a0etcd\u00a0(etcd\u00a0is the key value store used for data access by the Kubernetes)<\/span>\u00a0<\/span><\/li><\/ul>

    \u00a0<\/span><\/p>

    Cluster security\u00a0<\/span><\/b>\u00a0<\/span><\/p>

    • Use Transport Layer Security (TLS) for all API traffic.<\/span>\u00a0<\/span><\/li>
    • Use\u00a0API Authentication and Authorization\u202f<\/span>\u00a0<\/span><\/li>
    • Control the capabilities of a workload or user at runtime\u202f<\/span>\u00a0<\/span><\/li>
    • Limit resource usage on a cluster\u202f\u00a0<\/span> Control what privileges containers run\u00a0by\u00a0preventing\u00a0containers from loading unwanted kernel modules.\u202f\u00a0<\/span><\/li>
    • Restrict network access.\u202f\u00a0<\/span>\u00a0<\/span><\/li>
    • Restrict cloud metadata API access.\u202f<\/span>\u00a0<\/span><\/li>
    • Restrict access to alpha or beta features.<\/span>\u00a0<\/span><\/li>
    • Rotate infrastructure credentials frequently.\u202f<\/span>\u00a0<\/span><\/li>
    • Review third-party integrations before enabling them<\/span>\u00a0<\/span><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t
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      Container Security\u202f\u202f<\/span><\/b>\u00a0<\/span><\/p>

      • Introduce Container Vulnerability Scanning and OS Dependency Security\u202f<\/span>\u00a0<\/span><\/li>
      • Introduce Image Signing and Enforcement\u00a0<\/span>\u00a0<\/span><\/li>
      • Sign container images to maintain a system of trust\u202f<\/span>\u00a0<\/span><\/li>
      • Remove the OS\u00a0package managers while using images as they contain unidentified vulnerabilities<\/span>\u00a0<\/span><\/li><\/ul>
        • Disallow privileged users\u202f\u00a0<\/span>\u00a0<\/span><\/li><\/ul>

          \u00a0<\/span><\/p>

          Other recommendations include:<\/span><\/b>\u00a0<\/span><\/p>

          • Draw isolation boundaries for sensitive workloads using namespaces<\/span>\u00a0<\/span><\/li><\/ul>
            • Enforce Kubernetes network segmentation policies\u00a0<\/span>\u00a0<\/span><\/li>
            • Monitor process activity and communications between server, client and containerized services<\/span>\u00a0<\/span><\/li>
            • Using image scanner to identify the vulnerabilities in the images and fixing them<\/span>\u00a0<\/span><\/li>
            • Label all non-critical and non-fixable vulnerabilities so that non-actionable alerts don\u2019t hamper the workflow of your\u00a0DevOps team.<\/span>\u00a0<\/span><\/li>
            • Code\u00a0Security Access\u00a0over TLS only\u202f<\/span>\u00a0<\/span><\/li><\/ul>
              • Limit port ranges of communication\u202f<\/span>\u00a0<\/span><\/li>
              • Static Code Analysis<\/span>\u00a0<\/span><\/li>
              • Dynamic probing of attacks<\/span>\u00a0<\/span><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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                \n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

                Kubernetes is an open-source container or microservice platform that manages computing, networking, and storage infrastructure workloads. Kubernetes provides a framework to run distributed systems resiliently.\u202f \u202f\u00a0 Kubernetes Security Challenges\u00a0 Kubernetes environment security is a major concern for most organizations. Kubernetes configurations are more complex because of cloud-based multi-environment and hybrid deployments. This increases the chances […]<\/p>\n","protected":false},"author":3,"featured_media":5831,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[81],"tags":[],"class_list":["post-10601","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cloud-services"],"_links":{"self":[{"href":"https:\/\/ismiletechnologies.com\/en_us\/wp-json\/wp\/v2\/posts\/10601","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ismiletechnologies.com\/en_us\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ismiletechnologies.com\/en_us\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ismiletechnologies.com\/en_us\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/ismiletechnologies.com\/en_us\/wp-json\/wp\/v2\/comments?post=10601"}],"version-history":[{"count":3,"href":"https:\/\/ismiletechnologies.com\/en_us\/wp-json\/wp\/v2\/posts\/10601\/revisions"}],"predecessor-version":[{"id":18805,"href":"https:\/\/ismiletechnologies.com\/en_us\/wp-json\/wp\/v2\/posts\/10601\/revisions\/18805"}],"wp:attachment":[{"href":"https:\/\/ismiletechnologies.com\/en_us\/wp-json\/wp\/v2\/media?parent=10601"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ismiletechnologies.com\/en_us\/wp-json\/wp\/v2\/categories?post=10601"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ismiletechnologies.com\/en_us\/wp-json\/wp\/v2\/tags?post=10601"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}