rhsa-2020_4320
Vulnerability from csaf_redhat
Published
2020-10-26 14:41
Modified
2024-11-22 15:50
Summary
Red Hat Security Advisory: OpenShift Container Platform 4.5.16 security update

Notes

Topic
Red Hat OpenShift Container Platform release 4.5.16 is now available with updates to packages and images that fix several bugs and add enhancements. Red Hat Product Security has rated this update as having a security impact of Low. 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): * openshift: Restricted SCC allows pods to craft custom network packets (CVE-2020-14336) 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": "Red Hat OpenShift Container Platform release 4.5.16 is now available with\nupdates to packages and images that fix several bugs and add enhancements.\n\nRed Hat Product Security has rated this update as having a security impact\nof Low. A Common Vulnerability Scoring System (CVSS) base score,\nwhich gives a detailed severity rating, is available for each vulnerability\nfrom the CVE link(s) in the References section.",
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        "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* openshift: Restricted SCC allows pods to craft custom network packets (CVE-2020-14336)\n\nFor more details about the security issue(s), including the impact, a CVSS\nscore, acknowledgments, and other related information, refer to the CVE\npage(s) listed in the References section.",
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    {
      "acknowledgments": [
        {
          "names": [
            "Yuval Kashtan"
          ],
          "organization": "Red Hat",
          "summary": "This issue was discovered by Red Hat."
        }
      ],
      "cve": "CVE-2020-14336",
      "cwe": {
        "id": "CWE-770",
        "name": "Allocation of Resources Without Limits or Throttling"
      },
      "discovery_date": "2020-06-25T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1858981"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in the Restricted Security Context Constraints (SCC), where it allows pods to craft custom network packets. This flaw allows an attacker to cause a denial of service attack on an OpenShift Container Platform cluster if they can deploy pods. The highest threat from this vulnerability is to system availability.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "openshift: restricted SCC allows pods to craft custom network packets",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "By default, the OpenShift Container Platform uses the OpenShift SDN network interface. This interface makes this attack impractical by implementing IPTable rules on the host side of the virtual network interface, isolating network traffic to within the pod.\n\nIf the OpenShift Container Platform has the sriov-network-operator deployed, it is at a greater risk for exploitation. \n\nIf installing a new OCP 4.6 cluster no changes are required. If upgrading a cluster from an earlier version to 4.5.16 be sure to delete 99-worker-generated-crio-capabilities and 99-master-generated-crio-capabilities machine controllers once you have tested that dropping NET_RAW does not break your cluster workload.",
          "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"
        }
      ],
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          "7Server-RH7-RHOSE-4.5:openshift4/ose-machine-config-operator@sha256:0d08b01798a96cb124e07a40e6953ad220bc2055f926e27517c2fe202beae812_ppc64le",
          "7Server-RH7-RHOSE-4.5:openshift4/ose-machine-config-operator@sha256:2ac7d8e5a4a1a8a0cbb06ac6302a146b256e413f54d62dca553c11e1dcc0661d_amd64",
          "7Server-RH7-RHOSE-4.5:openshift4/ose-machine-config-operator@sha256:56347b9b9aa202c3ea4ee5fc6c6d4e78bb5aa20d3cc358ef41c5640c45d7538f_s390x"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2020-14336"
        },
        {
          "category": "external",
          "summary": "RHBZ#1858981",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1858981"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2020-14336",
          "url": "https://www.cve.org/CVERecord?id=CVE-2020-14336"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2020-14336",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-14336"
        }
      ],
      "release_date": "2020-07-13T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2020-10-26T14:41:36+00:00",
          "details": "For OpenShift Container Platform 4.5 see the following documentation, which\nwill be updated shortly for this release, for important instructions on how\nto upgrade your cluster and fully apply this asynchronous errata update:\n\nhttps://docs.openshift.com/container-platform/4.5/release_notes/ocp-4-5-release-notes.html\n\nDetails on how to access this content are available at\nhttps://docs.openshift.com/container-platform/4.5/updating/updating-cluster-cli.html.",
          "product_ids": [
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            "7Server-RH7-RHOSE-4.5:openshift4/ose-machine-config-operator@sha256:2ac7d8e5a4a1a8a0cbb06ac6302a146b256e413f54d62dca553c11e1dcc0661d_amd64",
            "7Server-RH7-RHOSE-4.5:openshift4/ose-machine-config-operator@sha256:56347b9b9aa202c3ea4ee5fc6c6d4e78bb5aa20d3cc358ef41c5640c45d7538f_s390x"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2020:4320"
        },
        {
          "category": "workaround",
          "details": "On OCP 3.11 create a custom SCC based on \u0027restricted\u0027 and also drop the NET_RAW capability[1]. Assign this custom SCC to any users, or groups which create pods you want to protect. See the documentation for more information [2]. \n[1] https://access.redhat.com/solutions/5611521\n[2] https://docs.openshift.com/container-platform/3.11/admin_guide/manage_scc.html",
          "product_ids": [
            "7Server-RH7-RHOSE-4.5:openshift4/ose-machine-config-operator@sha256:0d08b01798a96cb124e07a40e6953ad220bc2055f926e27517c2fe202beae812_ppc64le",
            "7Server-RH7-RHOSE-4.5:openshift4/ose-machine-config-operator@sha256:2ac7d8e5a4a1a8a0cbb06ac6302a146b256e413f54d62dca553c11e1dcc0661d_amd64",
            "7Server-RH7-RHOSE-4.5:openshift4/ose-machine-config-operator@sha256:56347b9b9aa202c3ea4ee5fc6c6d4e78bb5aa20d3cc358ef41c5640c45d7538f_s390x"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 3.1,
            "baseSeverity": "LOW",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L",
            "version": "3.1"
          },
          "products": [
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            "7Server-RH7-RHOSE-4.5:openshift4/ose-machine-config-operator@sha256:2ac7d8e5a4a1a8a0cbb06ac6302a146b256e413f54d62dca553c11e1dcc0661d_amd64",
            "7Server-RH7-RHOSE-4.5:openshift4/ose-machine-config-operator@sha256:56347b9b9aa202c3ea4ee5fc6c6d4e78bb5aa20d3cc358ef41c5640c45d7538f_s390x"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Low"
        }
      ],
      "title": "openshift: restricted SCC allows pods to craft custom network packets"
    }
  ]
}


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