ghsa-55qj-gj3x-jq9r
Vulnerability from github
Published
2024-04-24 20:01
Modified
2024-06-10 19:36
Severity ?
Summary
Denial of service in Kubernetes
Details
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.
{
"affected": [
{
"package": {
"ecosystem": "Go",
"name": "k8s.io/kubernetes/pkg/kubelet"
},
"ranges": [
{
"events": [
{
"introduced": "1.1.0"
},
{
"fixed": "1.16.13"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Go",
"name": "k8s.io/kubernetes/pkg/kubelet"
},
"ranges": [
{
"events": [
{
"introduced": "1.17.0"
},
{
"fixed": "1.17.9"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Go",
"name": "k8s.io/kubernetes/pkg/kubelet"
},
"ranges": [
{
"events": [
{
"introduced": "1.18.0"
},
{
"fixed": "1.18.6"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2020-8557"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": true,
"github_reviewed_at": "2024-04-24T20:01:31Z",
"nvd_published_at": "2020-07-23T17:15:00Z",
"severity": "MODERATE"
},
"details": "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.",
"id": "GHSA-55qj-gj3x-jq9r",
"modified": "2024-06-10T19:36:51Z",
"published": "2024-04-24T20:01:31Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-8557"
},
{
"type": "WEB",
"url": "https://github.com/kubernetes/kubernetes/issues/93032"
},
{
"type": "WEB",
"url": "https://github.com/kubernetes/kubernetes/pull/92921"
},
{
"type": "WEB",
"url": "https://github.com/kubernetes/kubernetes/commit/530f199b6e07cdaab32361e39709ac45f3fdc446"
},
{
"type": "WEB",
"url": "https://github.com/kubernetes/kubernetes/commit/68750fefd3df76b7b008ef7b18e8acd18d5c2f2e"
},
{
"type": "WEB",
"url": "https://github.com/kubernetes/kubernetes/commit/7fd849cffa2f93061fbcb0a6ae4efd0539b1e981"
},
{
"type": "ADVISORY",
"url": "https://github.com/advisories/GHSA-55qj-gj3x-jq9r"
},
{
"type": "PACKAGE",
"url": "https://github.com/kubernetes/kubernetes"
},
{
"type": "WEB",
"url": "https://groups.google.com/g/kubernetes-security-announce/c/cB_JUsYEKyY/m/vVSO61AhBwAJ"
},
{
"type": "WEB",
"url": "https://pkg.go.dev/vuln/GO-2024-2753"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20200821-0002"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
],
"summary": "Denial of service in Kubernetes"
}
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- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.