rhsa-2020_2441
Vulnerability from csaf_redhat
Published
2020-06-17 20:15
Modified
2024-11-05 22:18
Summary
Red Hat Security Advisory: OpenShift Container Platform 4.3.25 openshift-enterprise-hyperkube-container security update

Notes

Topic
An update for openshift-enterprise-hyperkube-container is now available for Red Hat OpenShift Container Platform 4.3. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details
Red Hat OpenShift Container Platform is Red Hat's cloud computing Kubernetes application platform solution designed for on-premise or private cloud deployments. Security Fix(es): * kubernetes: A server side request forgery (SSRF) in the kube-controller-manager allows certain authorized users to leak up to 500 bytes of arbitrary information from the master's host network (CVE-2020-8555) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Terms of Use
This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.


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        "text": "An update for openshift-enterprise-hyperkube-container is now available for Red Hat OpenShift Container Platform 4.3.\n\nRed Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.",
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        "category": "general",
        "text": "Red Hat OpenShift Container Platform is Red Hat\u0027s cloud computing\nKubernetes application platform solution designed for on-premise or private\ncloud deployments.\n\nSecurity Fix(es):\n\n* kubernetes: A server side request forgery (SSRF) in the kube-controller-manager allows certain authorized users to leak up to 500 bytes of arbitrary information from the master\u0027s host network (CVE-2020-8555)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.",
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  "vulnerabilities": [
    {
      "acknowledgments": [
        {
          "names": [
            "the Kubernetes Product Security Committee"
          ]
        },
        {
          "names": [
            "Brice Augras"
          ],
          "organization": "Groupe-Asten",
          "summary": "Acknowledged by upstream."
        },
        {
          "names": [
            "Christophe Hauquiert"
          ],
          "organization": "Nokia",
          "summary": "Acknowledged by upstream."
        }
      ],
      "cve": "CVE-2020-8555",
      "cwe": {
        "id": "CWE-200",
        "name": "Exposure of Sensitive Information to an Unauthorized Actor"
      },
      "discovery_date": "2020-04-07T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1821583"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A server side request forgery (SSRF) flaw was found in Kubernetes. The kube-controller-manager allows authorized users with the ability to create StorageClasses or certain Volume types to leak up to 500 bytes of arbitrary information from the master\u0027s host network. This can include secrets from the kube-apiserver through the unauthenticated localhost port (if enabled).",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kubernetes: Server side request forgery (SSRF) in kube-controller-manager allows users to leak secret information",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "OpenShift Container Platform does not expose kube-apiserver through an unauthenticated localhost port. However, other link-local addresses are reachable without authentication that allow an attacker to access sensitive data.\n\nThe version of heketi shipped with Red Hat Gluster Storage 3 includes the affected client side code for heketi and quobyte volume plugin, however the vulnerable functionality is currently not used by the product and hence this issue has been rated as having a security impact of Low.\n\nRed Hat Openshift Container Storage 4.2 is not affected by this vulnerability as rook-ceph-operator container does not include support for affected volume plugins(storageos, scaleio, glusterfs, quobyte).",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "7Server-RH7-RHOSE-4.3:openshift4/ose-hyperkube@sha256:2d8d0beae7c6ac6eea010224d3df5b32477a1ba87ee345745698a0fcd3a7cc83_ppc64le",
          "7Server-RH7-RHOSE-4.3:openshift4/ose-hyperkube@sha256:50eb07078ebeb62e620e64c871803776dd665decc0b5ad5be4e39a6caf97e9e1_s390x",
          "7Server-RH7-RHOSE-4.3:openshift4/ose-hyperkube@sha256:d196b0a4f412f63720e360957433b6daf48c88f6f23796f81443e01f86218a19_amd64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2020-8555"
        },
        {
          "category": "external",
          "summary": "RHBZ#1821583",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1821583"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2020-8555",
          "url": "https://www.cve.org/CVERecord?id=CVE-2020-8555"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2020-8555",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-8555"
        },
        {
          "category": "external",
          "summary": "https://groups.google.com/forum/#!topic/kubernetes-security-announce/kEK27tqqs30",
          "url": "https://groups.google.com/forum/#!topic/kubernetes-security-announce/kEK27tqqs30"
        }
      ],
      "release_date": "2020-06-01T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2020-06-17T20:15:20+00:00",
          "details": "For OpenShift Container Platform 4.3 see the following documentation, which\nwill be updated shortly for release 4.3.25, for important instructions on\nhow to upgrade your cluster and fully apply this asynchronous errata\nupdate:\n\nhttps://docs.openshift.com/container-platform/4.3/release_notes/ocp-4-3-release-notes.html\n\nDetails on how to access this content are available at\nhttps://docs.openshift.com/container-platform/4.3/updating/updating-cluster-cli.html.",
          "product_ids": [
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            "7Server-RH7-RHOSE-4.3:openshift4/ose-hyperkube@sha256:50eb07078ebeb62e620e64c871803776dd665decc0b5ad5be4e39a6caf97e9e1_s390x",
            "7Server-RH7-RHOSE-4.3:openshift4/ose-hyperkube@sha256:d196b0a4f412f63720e360957433b6daf48c88f6f23796f81443e01f86218a19_amd64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2020:2441"
        },
        {
          "category": "workaround",
          "details": "Restrict use of the vulnerable volume type and restrict StorageClass write permissions via RBAC",
          "product_ids": [
            "7Server-RH7-RHOSE-4.3:openshift4/ose-hyperkube@sha256:2d8d0beae7c6ac6eea010224d3df5b32477a1ba87ee345745698a0fcd3a7cc83_ppc64le",
            "7Server-RH7-RHOSE-4.3:openshift4/ose-hyperkube@sha256:50eb07078ebeb62e620e64c871803776dd665decc0b5ad5be4e39a6caf97e9e1_s390x",
            "7Server-RH7-RHOSE-4.3:openshift4/ose-hyperkube@sha256:d196b0a4f412f63720e360957433b6daf48c88f6f23796f81443e01f86218a19_amd64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N",
            "version": "3.1"
          },
          "products": [
            "7Server-RH7-RHOSE-4.3:openshift4/ose-hyperkube@sha256:2d8d0beae7c6ac6eea010224d3df5b32477a1ba87ee345745698a0fcd3a7cc83_ppc64le",
            "7Server-RH7-RHOSE-4.3:openshift4/ose-hyperkube@sha256:50eb07078ebeb62e620e64c871803776dd665decc0b5ad5be4e39a6caf97e9e1_s390x",
            "7Server-RH7-RHOSE-4.3:openshift4/ose-hyperkube@sha256:d196b0a4f412f63720e360957433b6daf48c88f6f23796f81443e01f86218a19_amd64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "kubernetes: Server side request forgery (SSRF) in kube-controller-manager allows users to leak secret information"
    }
  ]
}


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