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      <title>CVE-2020-8557 — Kubernetes node disk Denial of Service by writing to container /etc/hosts</title>
      <link>https://cve.radiocsirt.org/vuln/cve-2020-8557</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; Kubernetes&lt;/p&gt;
&lt;p&gt;The Kubernetes kubelet component in versions 1.1-1.16.12, 1.17.0-1.17.8 and 1.18.0-1.18.5 do not account for disk usage by a pod which writes to its own /etc/hosts file. The /etc/hosts file mounted in a pod by kubelet is not included by the kubelet eviction manager when calculating ephemeral storage usage by a pod. If a pod writes a large amount of data to the /etc/hosts file, it could fill the storage space of the node and cause the node to fail.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; Kubernetes&lt;/p&gt;
&lt;p&gt;The Kubernetes kubelet component in versions 1.1-1.16.12, 1.17.0-1.17.8 and 1.18.0-1.18.5 do not account for disk usage by a pod which writes to its own /etc/hosts file. The /etc/hosts file mounted in a pod by kubelet is not included by the kubelet eviction manager when calculating ephemeral storage usage by a pod. If a pod writes a large amount of data to the /etc/hosts file, it could fill the storage space of the node and cause the node to fail.&lt;/p&gt;</content:encoded>
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