rhsa-2020_0933
Vulnerability from csaf_redhat
Published
2020-04-01 18:50
Modified
2024-11-05 21:56
Summary
Red Hat Security Advisory: OpenShift Container Platform 4.3.9 ose-openshift-apiserver-container security update

Notes

Topic
An update for ose-openshift-apiserver-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: Use of unbounded 'client' label in apiserver_request_total allowed for memory exhaustion (CVE-2020-8552) 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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{
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      "text": "Moderate"
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    "category": "csaf_security_advisory",
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    "distribution": {
      "text": "Copyright \u00a9 Red Hat, Inc. All rights reserved.",
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    "lang": "en",
    "notes": [
      {
        "category": "summary",
        "text": "An update for ose-openshift-apiserver-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.",
        "title": "Topic"
      },
      {
        "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: Use of unbounded \u0027client\u0027 label in apiserver_request_total allowed for memory exhaustion (CVE-2020-8552)\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.",
        "title": "Details"
      },
      {
        "category": "legal_disclaimer",
        "text": "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.",
        "title": "Terms of Use"
      }
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    "publisher": {
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      "contact_details": "https://access.redhat.com/security/team/contact/",
      "issuing_authority": "Red Hat Product Security is responsible for vulnerability handling across all Red Hat products and services.",
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    "title": "Red Hat Security Advisory: OpenShift Container Platform 4.3.9 ose-openshift-apiserver-container security update",
    "tracking": {
      "current_release_date": "2024-11-05T21:56:11+00:00",
      "generator": {
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          "version": "4.1.1"
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      "initial_release_date": "2020-04-01T18:50:35+00:00",
      "revision_history": [
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      "status": "final",
      "version": "3"
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  "product_tree": {
    "branches": [
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            "branches": [
              {
                "category": "product_name",
                "name": "Red Hat OpenShift Container Platform 4.3",
                "product": {
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                  "product_id": "7Server-RH7-RHOSE-4.3",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:redhat:openshift:4.3::el7"
                  }
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              }
            ],
            "category": "product_family",
            "name": "Red Hat OpenShift Enterprise"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "openshift4/ose-openshift-apiserver-rhel7@sha256:1bebc10fd956168ec31e45ce2d3753f215b59a533c834d41c6f83eca4db2da84_amd64",
                "product": {
                  "name": "openshift4/ose-openshift-apiserver-rhel7@sha256:1bebc10fd956168ec31e45ce2d3753f215b59a533c834d41c6f83eca4db2da84_amd64",
                  "product_id": "openshift4/ose-openshift-apiserver-rhel7@sha256:1bebc10fd956168ec31e45ce2d3753f215b59a533c834d41c6f83eca4db2da84_amd64",
                  "product_identification_helper": {
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    "relationships": [
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        },
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        "relates_to_product_reference": "7Server-RH7-RHOSE-4.3"
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  "vulnerabilities": [
    {
      "cve": "CVE-2019-11254",
      "cwe": {
        "id": "CWE-400",
        "name": "Uncontrolled Resource Consumption"
      },
      "discovery_date": "2020-04-01T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1819486"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "The Kubernetes API Server component in versions 1.1-1.14, and versions prior to 1.15.10, 1.16.7 and 1.17.3 allows an authorized user who sends malicious YAML payloads to cause the kube-apiserver to consume excessive CPU cycles while parsing YAML.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kubernetes: Denial of service in API server via crafted YAML payloads by authorized users",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "The upstream Kubernetes fix for this vulnerability is to update the version of the Go dependency, gopkg.in/yaml.v2. This issue affects OpenShift Container Platform components that use versions before 2.2.8 of gopkg.in/yaml.v2 and accept YAML payloads.",
          "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-openshift-apiserver-rhel7@sha256:1bebc10fd956168ec31e45ce2d3753f215b59a533c834d41c6f83eca4db2da84_amd64"
        ]
      },
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          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2019-11254"
        },
        {
          "category": "external",
          "summary": "RHBZ#1819486",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1819486"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2019-11254",
          "url": "https://www.cve.org/CVERecord?id=CVE-2019-11254"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2019-11254",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-11254"
        },
        {
          "category": "external",
          "summary": "https://groups.google.com/forum/#!topic/kubernetes-security-announce/wuwEwZigXBc",
          "url": "https://groups.google.com/forum/#!topic/kubernetes-security-announce/wuwEwZigXBc"
        }
      ],
      "release_date": "2020-03-27T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2020-04-01T18:50:35+00:00",
          "details": "For OpenShift Container Platform 4.3 see the following documentation, which\nwill be updated shortly for release 4.3.9, 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": [
            "7Server-RH7-RHOSE-4.3:openshift4/ose-openshift-apiserver-rhel7@sha256:1bebc10fd956168ec31e45ce2d3753f215b59a533c834d41c6f83eca4db2da84_amd64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2020:0933"
        },
        {
          "category": "workaround",
          "details": "Prevent unauthenticated or unauthorized access to the API server",
          "product_ids": [
            "7Server-RH7-RHOSE-4.3:openshift4/ose-openshift-apiserver-rhel7@sha256:1bebc10fd956168ec31e45ce2d3753f215b59a533c834d41c6f83eca4db2da84_amd64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "7Server-RH7-RHOSE-4.3:openshift4/ose-openshift-apiserver-rhel7@sha256:1bebc10fd956168ec31e45ce2d3753f215b59a533c834d41c6f83eca4db2da84_amd64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "kubernetes: Denial of service in API server via crafted YAML payloads by authorized users"
    },
    {
      "acknowledgments": [
        {
          "names": [
            "Kubernetes Product Security Committee"
          ]
        },
        {
          "names": [
            "Gus Lees"
          ],
          "organization": "Amazon",
          "summary": "Acknowledged by upstream."
        }
      ],
      "cve": "CVE-2020-8552",
      "cwe": {
        "id": "CWE-400",
        "name": "Uncontrolled Resource Consumption"
      },
      "discovery_date": "2020-02-01T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1797909"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A denial of service vulnerability was found in the Kubernetes API server. This flaw allows a remote attacker to send repeated, crafted HTTP requests to exhaust available memory and cause a crash.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kubernetes: Use of unbounded \u0027client\u0027 label in apiserver_request_total allows for memory exhaustion",
          "title": "Vulnerability summary"
        },
        {
          "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-openshift-apiserver-rhel7@sha256:1bebc10fd956168ec31e45ce2d3753f215b59a533c834d41c6f83eca4db2da84_amd64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2020-8552"
        },
        {
          "category": "external",
          "summary": "RHBZ#1797909",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1797909"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2020-8552",
          "url": "https://www.cve.org/CVERecord?id=CVE-2020-8552"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2020-8552",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-8552"
        },
        {
          "category": "external",
          "summary": "https://github.com/kubernetes/kubernetes/issues/89378",
          "url": "https://github.com/kubernetes/kubernetes/issues/89378"
        },
        {
          "category": "external",
          "summary": "https://groups.google.com/forum/#!topic/kubernetes-security-announce/2UOlsba2g0s",
          "url": "https://groups.google.com/forum/#!topic/kubernetes-security-announce/2UOlsba2g0s"
        }
      ],
      "release_date": "2020-03-23T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2020-04-01T18:50:35+00:00",
          "details": "For OpenShift Container Platform 4.3 see the following documentation, which\nwill be updated shortly for release 4.3.9, 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": [
            "7Server-RH7-RHOSE-4.3:openshift4/ose-openshift-apiserver-rhel7@sha256:1bebc10fd956168ec31e45ce2d3753f215b59a533c834d41c6f83eca4db2da84_amd64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2020:0933"
        },
        {
          "category": "workaround",
          "details": "Prevent unauthenticated or unauthorized access to all APIs",
          "product_ids": [
            "7Server-RH7-RHOSE-4.3:openshift4/ose-openshift-apiserver-rhel7@sha256:1bebc10fd956168ec31e45ce2d3753f215b59a533c834d41c6f83eca4db2da84_amd64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 4.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
            "version": "3.1"
          },
          "products": [
            "7Server-RH7-RHOSE-4.3:openshift4/ose-openshift-apiserver-rhel7@sha256:1bebc10fd956168ec31e45ce2d3753f215b59a533c834d41c6f83eca4db2da84_amd64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "kubernetes: Use of unbounded \u0027client\u0027 label in apiserver_request_total allows for memory exhaustion"
    }
  ]
}


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