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Auto-merge PR#4395
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2020/8xxx/CVE-2020-8557.json
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{
"data_type": "CVE",
"data_format": "MITRE",
"data_version": "4.0",
"CVE_data_meta": {
"ASSIGNER": "security@kubernetes.io",
"DATE_PUBLIC": "2020-07-15T00:00:00.000Z",
"ID": "CVE-2020-8557",
"ASSIGNER": "cve@mitre.org",
"STATE": "RESERVED"
"STATE": "PUBLIC",
"TITLE": "Kubernetes node disk Denial of Service by writing to container /etc/hosts"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "Kubernetes",
"version": {
"version_data": [
{
"version_affected": "<",
"version_name": "1.18",
"version_value": "1.18.6"
},
{
"version_affected": "<",
"version_name": "1.17",
"version_value": "1.17.9"
},
{
"version_affected": "<",
"version_name": "1.16",
"version_value": "1.16.13"
},
{
"version_value": "1.15"
},
{
"version_value": "1.14"
},
{
"version_value": "1.13"
},
{
"version_value": "1.12"
},
{
"version_value": "1.11"
},
{
"version_value": "1.10"
},
{
"version_value": "1.9"
},
{
"version_value": "1.8"
},
{
"version_value": "1.7"
},
{
"version_value": "1.6"
},
{
"version_value": "1.5"
},
{
"version_value": "1.4"
},
{
"version_value": "1.3"
},
{
"version_value": "1.2"
},
{
"version_value": "1.1"
}
]
}
}
]
},
"vendor_name": "Kubernetes"
}
]
}
},
"credit": [
{
"lang": "eng",
"value": "Kebe Liu of DaoCloud"
}
],
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "** RESERVED ** This candidate has been reserved by an organization or individual that will use it when announcing a new security problem. When the candidate has been publicized, the details for this candidate will be provided."
"value": "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."
}
]
},
"generator": {
"engine": "Vulnogram 0.0.9"
},
"impact": {
"cvss": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
}
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "CWE-400 Uncontrolled Resource Consumption"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://github.com/kubernetes/kubernetes/issues/93032",
"refsource": "CONFIRM",
"url": "https://github.com/kubernetes/kubernetes/issues/93032"
},
{
"name": "[Security Advisory] CVE-2020-8557: Node disk DOS by writing to container /etc/hosts",
"refsource": "MLIST",
"url": "https://groups.google.com/g/kubernetes-security-announce/c/cB_JUsYEKyY/m/vVSO61AhBwAJ"
}
]
},
"source": {
"discovery": "USER"
}
}
}