gsd-2021-25737
Vulnerability from gsd
Modified
2023-12-13 01:23
Details
A security issue was discovered in Kubernetes where a user may be able to redirect pod traffic to private networks on a Node. Kubernetes already prevents creation of Endpoint IPs in the localhost or link-local range, but the same validation was not performed on EndpointSlice IPs.
Aliases
Aliases
{ "GSD": { "alias": "CVE-2021-25737", "description": "A security issue was discovered in Kubernetes where a user may be able to redirect pod traffic to private networks on a Node. Kubernetes already prevents creation of Endpoint IPs in the localhost or link-local range, but the same validation was not performed on EndpointSlice IPs.", "id": "GSD-2021-25737", "references": [ "https://www.suse.com/security/cve/CVE-2021-25737.html", "https://access.redhat.com/errata/RHSA-2021:2437", "https://security.archlinux.org/CVE-2021-25737" ] }, "gsd": { "metadata": { "exploitCode": "unknown", "remediation": "unknown", "reportConfidence": "confirmed", "type": "vulnerability" }, "osvSchema": { "aliases": [ "CVE-2021-25737" ], "details": "A security issue was discovered in Kubernetes where a user may be able to redirect pod traffic to private networks on a Node. Kubernetes already prevents creation of Endpoint IPs in the localhost or link-local range, but the same validation was not performed on EndpointSlice IPs.", "id": "GSD-2021-25737", "modified": "2023-12-13T01:23:21.288965Z", "schema_version": "1.4.0" } }, "namespaces": { "cve.org": { "CVE_data_meta": { "ASSIGNER": "security@kubernetes.io", "DATE_PUBLIC": "2021-05-18T19:00:00.000Z", "ID": "CVE-2021-25737", "STATE": "PUBLIC", "TITLE": "Holes in EndpointSlice Validation Enable Host Network Hijack" }, "affects": { "vendor": { "vendor_data": [ { "product": { "product_data": [ { "product_name": "Kubernetes", "version": { "version_data": [ { "version_affected": "\u003c=", "version_value": "1.18.18" }, { "version_affected": "\u003c=", "version_value": "1.19.10" }, { "version_affected": "\u003c=", "version_value": "1.20.6" }, { "version_affected": "\u003c=", "version_value": "1.21.0" } ] } } ] }, "vendor_name": "Kubernetes" } ] } }, "credit": [ { "lang": "eng", "value": "John Howard" } ], "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 redirect pod traffic to private networks on a Node. Kubernetes already prevents creation of Endpoint IPs in the localhost or link-local range, but the same validation was not performed on EndpointSlice IPs." } ] }, "generator": { "engine": "Vulnogram 0.0.9" }, "impact": { "cvss": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 2.7, "baseSeverity": "LOW", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N", "version": "3.1" } }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "CWE-184 Incomplete Blacklist" } ] } ] }, "references": { "reference_data": [ { "name": "https://groups.google.com/g/kubernetes-security-announce/c/xAiN3924thY", "refsource": "MISC", "url": "https://groups.google.com/g/kubernetes-security-announce/c/xAiN3924thY" }, { "name": "https://github.com/kubernetes/kubernetes/issues/102106", "refsource": "MISC", "url": "https://github.com/kubernetes/kubernetes/issues/102106" }, { "name": "https://security.netapp.com/advisory/ntap-20211004-0004/", "refsource": "CONFIRM", "url": "https://security.netapp.com/advisory/ntap-20211004-0004/" } ] }, "source": { "defect": [ "https://github.com/kubernetes/kubernetes/issues/102106" ], "discovery": "EXTERNAL" } }, "gitlab.com": { "advisories": [ { "affected_range": "\u003e=v1.16.0 \u003cv1.18.19 || \u003e=v1.19.0 \u003cv1.19.10 || \u003e=v1.20.0 \u003cv1.20.7 || =v1.21.0", "affected_versions": "All versions starting from 1.16.0 before 1.18.19, all versions starting from 1.19.0 before 1.19.10, all versions starting from 1.20.0 before 1.20.7, version 1.21.0", "cvss_v2": "AV:N/AC:M/Au:S/C:P/I:P/A:N", "cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N", "cwe_ids": [ "CWE-1035", "CWE-937" ], "date": "2021-10-07", "description": "A security issue was discovered in Kubernetes where a user may be able to redirect pod traffic to private networks on a Node. Kubernetes already prevents creation of Endpoint IPs in the localhost or link-local range, but the same validation was not performed on EndpointSlice IPs.", "fixed_versions": [ "v0.15.7" ], "identifier": "CVE-2021-25737", "identifiers": [ "CVE-2021-25737" ], "not_impacted": "All versions before 1.16.0, all versions starting from 1.18.19 before 1.19.0, all versions starting from 1.19.10 before 1.20.0, all versions starting from 1.20.7 before 1.21.0, all versions after 1.21.0", "package_slug": "go/github.com/kubernetes/client-go", "pubdate": "2021-09-06", "solution": "Upgrade to version 0.15.7 or above.", "title": "URL Redirection to Untrusted Site (\u0027Open Redirect\u0027)", "urls": [ "https://nvd.nist.gov/vuln/detail/CVE-2021-25737" ], "uuid": "51c1c43c-d89e-4066-a782-5ed2f88d473f", "versions": [ { "commit": { "sha": "0c0e6362aeebd04afefc2153f3718dd66b598033", "tags": [ "kubernetes-1.16.0" ], "timestamp": "20190918160344" }, "number": "v1.16.0" }, { "commit": { "sha": "0216c485e7897a33495d312552d6760c5f7d7f39", "tags": [ "v0.15.7" ], "timestamp": "20191211191335" }, "number": "v0.15.7" }, { "commit": { "sha": "7f00db86ac5edb9c3aa20f182a41e3a6479ccbbc", "tags": [ "kubernetes-1.19.0" ], "timestamp": "20200826212433" }, "number": "v1.19.0" }, { "commit": { "sha": "f51fa15f3df1a2101544e829a4eaa247c20e95fb", "tags": [ "kubernetes-1.20.0" ], "timestamp": "20201208210624" }, "number": "v1.20.0" }, { "commit": { "sha": "786f7a4a4a2335e9e6e70eae1c0b2efe62e92e03", "tags": [ "kubernetes-1.21.0" ], "timestamp": "20210408192749" }, "number": "v1.21.0" }, { "commit": { "sha": "3a2fdbb08c7f92155cb426b24c36a476dcc39ed0", "tags": [ "kubernetes-1.19.10" ], "timestamp": "20210415080238" }, "number": "v1.19.10" }, { "commit": { "sha": "54ab2aa147d32af9ea5b935d34325333f5ecb401", "tags": [ "kubernetes-1.18.19" ], "timestamp": "20210518104424" }, "number": "v1.18.19" }, { "commit": { "sha": "2f46a0d924d59d7061d04541d8c45ecd0de0998d", "tags": [ "kubernetes-1.20.7" ], "timestamp": "20210518105815" }, "number": "v1.20.7" } ] }, { "affected_range": "\u003e=1.16.0 \u003c1.18.19||\u003e=1.19.0 \u003c1.19.11||\u003e=1.20.0 \u003c1.20.7||=1.21.0", "affected_versions": "All versions starting from 1.16.0 before 1.18.19, all versions starting from 1.19.0 before 1.19.11, all versions starting from 1.20.0 before 1.20.7, version 1.21.0", "cvss_v2": "AV:N/AC:M/Au:S/C:P/I:P/A:N", "cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N", "cwe_ids": [ "CWE-1035", "CWE-601", "CWE-937" ], "date": "2021-10-05", "description": "A security issue was discovered in Kubernetes where a user may be able to redirect pod traffic to private networks on a Node. Kubernetes already prevents creation of Endpoint IPs in the localhost or link-local range, but the same validation was not performed on EndpointSlice IPs.", "fixed_versions": [ "1.18.19", "1.19.11", "1.20.7", "1.21.1" ], "identifier": "CVE-2021-25737", "identifiers": [ "GHSA-mfv7-gq43-w965", "CVE-2021-25737" ], "not_impacted": "All versions before 1.16.0, all versions starting from 1.18.19 before 1.19.0, all versions starting from 1.19.11 before 1.20.0, all versions starting from 1.20.7 before 1.21.0, all versions after 1.21.0", "package_slug": "go/k8s.io/kubernetes", "pubdate": "2021-09-07", "solution": "Upgrade to versions 1.18.19, 1.19.11, 1.20.7, 1.21.1 or above.", "title": "URL Redirection to Untrusted Site (\u0027Open Redirect\u0027)", "urls": [ "https://nvd.nist.gov/vuln/detail/CVE-2021-25737", "https://github.com/kubernetes/kubernetes/issues/102106", "https://groups.google.com/g/kubernetes-security-announce/c/xAiN3924thY", "https://security.netapp.com/advisory/ntap-20211004-0004/", "https://github.com/advisories/GHSA-mfv7-gq43-w965" ], "uuid": "e9528d59-f45a-4193-bb4f-81450e89f00d" }, { "affected_range": "\u003e=1.16.0 \u003c1.18.19||\u003e=1.19.0 \u003c1.19.10||\u003e=1.20.0 \u003c1.20.7||\u003e=1.21.0 \u003c1.21.1", "affected_versions": "All versions starting from 1.16.0 before 1.18.19, all versions starting from 1.19.0 before 1.19.10, all versions starting from 1.20.0 before 1.20.7, all versions starting from version 1.21.0 before 1.21.1", "cvss_v2": "AV:N/AC:M/Au:S/C:P/I:P/A:N", "cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N", "cwe_ids": [ "CWE-1035", "CWE-937" ], "date": "2021-10-07", "description": "A security issue was discovered in Kubernetes where a user may be able to redirect pod traffic to private networks on a Node. Kubernetes already prevents creation of Endpoint IPs in the localhost or link-local range, but the same validation was not performed on EndpointSlice IPs.", "fixed_versions": [ "1.18.19", "1.19.10", "1.20.7", "1.21.1" ], "identifier": "CVE-2021-25737", "identifiers": [ "CVE-2021-25737" ], "not_impacted": "All versions starting from 1.18.19 before 1.19.0, all versions starting from 1.19.10 before 1.20.0, all versions starting from 1.20.7 before 1.21.0, all versions starting from 1.21.1", "package_slug": "go/k8s.io/kubernetes/pkg/apis/apps/validation", "pubdate": "2021-09-06", "solution": "Upgrade to version 1.18.19, 1.19.10, 1.20.7, 1.21.1 or above.", "title": "URL Redirection to Untrusted Site (Open Redirect)", "urls": [ "https://nvd.nist.gov/vuln/detail/CVE-2021-25737" ], "uuid": "d5497e02-a36f-408d-aa1b-96b93abc5a5c" } ] }, "nvd.nist.gov": { "configurations": { "CVE_data_version": "4.0", "nodes": [ { "children": [], "cpe_match": [ { "cpe23Uri": "cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*", "cpe_name": [], "versionEndExcluding": "1.18.19", "versionStartIncluding": "1.16.0", "vulnerable": true }, { "cpe23Uri": "cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*", "cpe_name": [], "versionEndExcluding": "1.19.10", "versionStartIncluding": "1.19.0", "vulnerable": true }, { "cpe23Uri": "cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*", "cpe_name": [], "versionEndExcluding": "1.20.7", "versionStartIncluding": "1.20.0", "vulnerable": true }, { "cpe23Uri": "cpe:2.3:a:kubernetes:kubernetes:1.21.0:-:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true } ], "operator": "OR" } ] }, "cve": { "CVE_data_meta": { "ASSIGNER": "security@kubernetes.io", "ID": "CVE-2021-25737" }, "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 redirect pod traffic to private networks on a Node. Kubernetes already prevents creation of Endpoint IPs in the localhost or link-local range, but the same validation was not performed on EndpointSlice IPs." } ] }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "en", "value": "CWE-601" } ] } ] }, "references": { "reference_data": [ { "name": "https://github.com/kubernetes/kubernetes/issues/102106", "refsource": "MISC", "tags": [ "Patch", "Third Party Advisory" ], "url": "https://github.com/kubernetes/kubernetes/issues/102106" }, { "name": "https://groups.google.com/g/kubernetes-security-announce/c/xAiN3924thY", "refsource": "MISC", "tags": [ "Mailing List", "Third Party Advisory" ], "url": "https://groups.google.com/g/kubernetes-security-announce/c/xAiN3924thY" }, { "name": "https://security.netapp.com/advisory/ntap-20211004-0004/", "refsource": "CONFIRM", "tags": [ "Third Party Advisory" ], "url": "https://security.netapp.com/advisory/ntap-20211004-0004/" } ] } }, "impact": { "baseMetricV2": { "acInsufInfo": false, "cvssV2": { "accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "SINGLE", "availabilityImpact": "NONE", "baseScore": 4.9, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:M/Au:S/C:P/I:P/A:N", "version": "2.0" }, "exploitabilityScore": 6.8, "impactScore": 4.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "severity": "MEDIUM", "userInteractionRequired": true }, "baseMetricV3": { "cvssV3": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.8, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "HIGH", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N", "version": "3.1" }, "exploitabilityScore": 1.7, "impactScore": 2.7 } }, "lastModifiedDate": "2021-10-07T17:55Z", "publishedDate": "2021-09-06T12:15Z" } } }
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Sightings
Author | Source | Type | Date |
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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.