gsd-2021-25741
Vulnerability from gsd
Modified
2023-12-13 01:23
Details
A security issue was discovered in Kubernetes where a user may be able to create a container with subpath volume mounts to access files & directories outside of the volume, including on the host filesystem.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2021-25741",
"description": "A security issue was discovered in Kubernetes where a user may be able to create a container with subpath volume mounts to access files \u0026 directories outside of the volume, including on the host filesystem.",
"id": "GSD-2021-25741",
"references": [
"https://www.suse.com/security/cve/CVE-2021-25741.html",
"https://access.redhat.com/errata/RHSA-2021:3646",
"https://access.redhat.com/errata/RHSA-2021:3642",
"https://access.redhat.com/errata/RHSA-2021:3635",
"https://access.redhat.com/errata/RHSA-2021:3631",
"https://security.archlinux.org/CVE-2021-25741",
"https://linux.oracle.com/cve/CVE-2021-25741.html"
]
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
"CVE-2021-25741"
],
"details": "A security issue was discovered in Kubernetes where a user may be able to create a container with subpath volume mounts to access files \u0026 directories outside of the volume, including on the host filesystem.",
"id": "GSD-2021-25741",
"modified": "2023-12-13T01:23:21.826611Z",
"schema_version": "1.4.0"
}
},
"namespaces": {
"cve.org": {
"CVE_data_meta": {
"ASSIGNER": "security@kubernetes.io",
"DATE_PUBLIC": "2021-09-15T121:15:00.000Z",
"ID": "CVE-2021-25741",
"STATE": "PUBLIC",
"TITLE": "Symlink Exchange Can Allow Host Filesystem Access"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "Kubernetes",
"version": {
"version_data": [
{
"version_affected": "\u003c=",
"version_value": "1.19.14"
},
{
"version_affected": "\u003c=",
"version_value": "1.20.10"
},
{
"version_affected": "\u003c=",
"version_value": "1.21.4"
},
{
"version_affected": "\u003c=",
"version_value": "1.22.1"
}
]
}
}
]
},
"vendor_name": "Kubernetes"
}
]
}
},
"credit": [
{
"lang": "eng",
"value": "Fabricio Voznika \u0026 Mark Wolters"
}
],
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "A security issue was discovered in Kubernetes where a user may be able to create a container with subpath volume mounts to access files \u0026 directories outside of the volume, including on the host filesystem."
}
]
},
"generator": {
"engine": "Vulnogram 0.0.9"
},
"impact": {
"cvss": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
}
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "CWE-20: Improper Input Validation"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://groups.google.com/g/kubernetes-security-announce/c/nyfdhK24H7s",
"refsource": "MISC",
"url": "https://groups.google.com/g/kubernetes-security-announce/c/nyfdhK24H7s"
},
{
"name": "https://github.com/kubernetes/kubernetes/issues/104980",
"refsource": "MISC",
"url": "https://github.com/kubernetes/kubernetes/issues/104980"
},
{
"name": "https://security.netapp.com/advisory/ntap-20211008-0006/",
"refsource": "CONFIRM",
"url": "https://security.netapp.com/advisory/ntap-20211008-0006/"
}
]
},
"source": {
"defect": [
"https://github.com/kubernetes/kubernetes/issues/104980"
],
"discovery": "EXTERNAL"
}
},
"gitlab.com": {
"advisories": [
{
"affected_range": "\u003cv1.19.15 || \u003e=v1.20.0 \u003cv1.20.11 || \u003e=v1.21.0 \u003cv1.21.5 || \u003e=v1.22.0 \u003cv1.22.2",
"affected_versions": "All versions up to 1.19.14, all versions starting from 1.20.0 up to 1.20.10, all versions starting from 1.21.0 up to 1.21.4, all versions starting from 1.22.0 up to 1.22.1",
"cvss_v2": "AV:N/AC:L/Au:S/C:P/I:P/A:N",
"cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
"cwe_ids": [
"CWE-1035",
"CWE-937"
],
"date": "2021-09-29",
"description": "A security issue was discovered in Kubernetes where a user may be able to create a container with subpath volume mounts to access files \u0026 directories outside of the volume, including on the host filesystem.",
"fixed_versions": [
"v1.22.2",
"v1.21.5",
"v1.20.11",
"v1.19.15"
],
"identifier": "CVE-2021-25741",
"identifiers": [
"CVE-2021-25741"
],
"not_impacted": "All versions starting from 1.19.15 before 1.20.0, all versions starting from 1.20.10 before 1.21.0, all versions starting from 1.21.4 before 1.22.0, all versions starting from 1.22.2",
"package_slug": "go/github.com/kubernetes/kubelet",
"pubdate": "2021-09-20",
"solution": "Upgrade to version 1.19.15, 1.20.11, 1.21.5, 1.22.2 or above.",
"title": "Files or Directories Accessible to External Parties",
"urls": [
"https://nvd.nist.gov/vuln/detail/CVE-2021-25741"
],
"uuid": "57f9752e-d1dd-4c8d-8041-670e5c49cb1d",
"versions": [
{
"commit": {
"sha": "813e574ae28f51d8fa7745338022f4b9623827bb",
"tags": [
"kubernetes-1.20.0"
],
"timestamp": "20201208213757"
},
"number": "v1.20.0"
},
{
"commit": {
"sha": "44f4b3ca5bc19f25c8cd6128ffbe0a4cf1a2f174",
"tags": [
"kubernetes-1.21.0"
],
"timestamp": "20210408195821"
},
"number": "v1.21.0"
},
{
"commit": {
"sha": "9fcdc6aed93321bbda41f85923e7446b930cf287",
"tags": [
"kubernetes-1.22.0"
],
"timestamp": "20210804204041"
},
"number": "v1.22.0"
},
{
"commit": {
"sha": "613092983332adca3828b06e2d856ebda98e64c1",
"tags": [
"kubernetes-1.19.14"
],
"timestamp": "20210812010820"
},
"number": "v1.19.14"
},
{
"commit": {
"sha": "327d7d5f3f19f5a1fa1f422db819430ec3106fa5",
"tags": [
"kubernetes-1.20.10"
],
"timestamp": "20210812010904"
},
"number": "v1.20.10"
},
{
"commit": {
"sha": "538de5d7d721ec76f1f4edd61110b049318934b7",
"tags": [
"kubernetes-1.21.4"
],
"timestamp": "20210812010947"
},
"number": "v1.21.4"
},
{
"commit": {
"sha": "a5439c02278dddbdef51961133f23527ece8db5d",
"tags": [
"kubernetes-1.22.1"
],
"timestamp": "20210819204512"
},
"number": "v1.22.1"
}
]
},
{
"affected_range": "\u003c1.19.15||\u003e=1.20.0 \u003c1.20.11||\u003e=1.21.0 \u003c1.21.5||\u003e=1.22.0 \u003c1.22.2",
"affected_versions": "All versions before 1.19.15, all versions starting from 1.20.0 before 1.20.11, all versions starting from 1.21.0 before 1.21.5, all versions starting from 1.22.0 before 1.22.2",
"cvss_v2": "AV:N/AC:L/Au:S/C:P/I:P/A:N",
"cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
"cwe_ids": [
"CWE-1035",
"CWE-552",
"CWE-937"
],
"date": "2021-11-01",
"description": "A security issue was discovered in Kubernetes where a user may be able to create a container with subpath volume mounts to access files \u0026 directories outside of the volume, including on the host filesystem.",
"fixed_versions": [
"1.19.15",
"1.20.11",
"1.21.5",
"1.22.2"
],
"identifier": "CVE-2021-25741",
"identifiers": [
"GHSA-f5f7-6478-qm6p",
"CVE-2021-25741"
],
"not_impacted": "All versions starting from 1.19.15 before 1.20.0, all versions starting from 1.20.11 before 1.21.0, all versions starting from 1.21.5 before 1.22.0, all versions starting from 1.22.2",
"package_slug": "go/k8s.io/kubernetes",
"pubdate": "2021-11-01",
"solution": "Upgrade to versions 1.19.15, 1.20.11, 1.21.5, 1.22.2 or above.",
"title": "Files or Directories Accessible to External Parties",
"urls": [
"https://github.com/bottlerocket-os/bottlerocket/security/advisories/GHSA-f5f7-6478-qm6p",
"https://nvd.nist.gov/vuln/detail/CVE-2021-25741",
"https://github.com/kubernetes/kubernetes/issues/104980",
"https://groups.google.com/g/kubernetes-security-announce/c/nyfdhK24H7s",
"https://security.netapp.com/advisory/ntap-20211008-0006/",
"https://github.com/advisories/GHSA-f5f7-6478-qm6p"
],
"uuid": "44f58c02-6eca-436e-afdf-92cb4c7ad69f"
}
]
},
"nvd.nist.gov": {
"configurations": {
"CVE_data_version": "4.0",
"nodes": [
{
"children": [],
"cpe_match": [
{
"cpe23Uri": "cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*",
"cpe_name": [],
"versionEndIncluding": "1.19.14",
"vulnerable": true
},
{
"cpe23Uri": "cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*",
"cpe_name": [],
"versionEndIncluding": "1.20.10",
"versionStartIncluding": "1.20.0",
"vulnerable": true
},
{
"cpe23Uri": "cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*",
"cpe_name": [],
"versionEndIncluding": "1.21.4",
"versionStartIncluding": "1.21.0",
"vulnerable": true
},
{
"cpe23Uri": "cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*",
"cpe_name": [],
"versionEndIncluding": "1.22.1",
"versionStartIncluding": "1.22.0",
"vulnerable": true
}
],
"operator": "OR"
}
]
},
"cve": {
"CVE_data_meta": {
"ASSIGNER": "security@kubernetes.io",
"ID": "CVE-2021-25741"
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "en",
"value": "A security issue was discovered in Kubernetes where a user may be able to create a container with subpath volume mounts to access files \u0026 directories outside of the volume, including on the host filesystem."
}
]
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "en",
"value": "CWE-552"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "N/A",
"refsource": "MLIST",
"tags": [
"Mailing List",
"Mitigation"
],
"url": "https://groups.google.com/g/kubernetes-security-announce/c/nyfdhK24H7s"
},
{
"name": "N/A",
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"tags": [
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],
"url": "https://github.com/kubernetes/kubernetes/issues/104980"
},
{
"name": "https://security.netapp.com/advisory/ntap-20211008-0006/",
"refsource": "CONFIRM",
"tags": [
"Third Party Advisory"
],
"url": "https://security.netapp.com/advisory/ntap-20211008-0006/"
}
]
}
},
"impact": {
"baseMetricV2": {
"acInsufInfo": false,
"cvssV2": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "SINGLE",
"availabilityImpact": "NONE",
"baseScore": 5.5,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "PARTIAL",
"vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:N",
"version": "2.0"
},
"exploitabilityScore": 8.0,
"impactScore": 4.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"severity": "MEDIUM",
"userInteractionRequired": false
},
"baseMetricV3": {
"cvssV3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 8.1,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
"version": "3.1"
},
"exploitabilityScore": 2.8,
"impactScore": 5.2
}
},
"lastModifiedDate": "2021-11-30T22:42Z",
"publishedDate": "2021-09-20T17:15Z"
}
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- 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.