RHSA-2020:1276

Vulnerability from csaf_redhat - Published: 2020-04-07 13:04 - Updated: 2025-11-21 18:13
Summary
Red Hat Security Advisory: OpenShift Container Platform 4.3.10 openshift security update

Notes

Topic
An update for openshift 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: crafted requests to kubelet API allowed for memory exhaustion (CVE-2020-8551) 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 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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        "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: crafted requests to kubelet API allowed for memory exhaustion (CVE-2020-8551)\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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        "name": "Uncontrolled Resource Consumption"
      },
      "discovery_date": "2020-03-23T00:00:00+00:00",
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          "category": "description",
          "text": "A denial of service flaw was found in Kubernetes\u0027 Kubelet API. A remote attacker can exploit this flaw by sending repeated, crafted HTTP requests to exhaust available memory and cause a crash.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kubernetes: crafted requests to kubelet API allow for memory exhaustion",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "By default, OpenShift Container Platform does not allow unauthenticated access to the Kubelet API. OpenShift Container Platform versions before 4.2 are not affected by this vulnerability as they are based on earlier versions of Kubernetes which do not include metrics for the Kubelet HTTP server.",
          "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.",
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        }
      ],
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        {
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          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2020-8551",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-8551"
        },
        {
          "category": "external",
          "summary": "https://github.com/kubernetes/kubernetes/issues/89377",
          "url": "https://github.com/kubernetes/kubernetes/issues/89377"
        },
        {
          "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": "2020-04-07T13:04:09+00:00",
          "details": "For OpenShift Container Platform 4.3 see the following documentation, which\nwill be updated shortly for release 4.3.10, 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.",
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            "8Base-RHOSE-4.3:openshift-0:4.3.10-202003300855.git.0.da48c1d.el8.src",
            "8Base-RHOSE-4.3:openshift-hyperkube-0:4.3.10-202003300855.git.0.da48c1d.el8.x86_64"
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          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2020:1276"
        },
        {
          "category": "workaround",
          "details": "Prevent unauthenticated or unauthorized access to the Kubelet API",
          "product_ids": [
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      "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": [
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            "8Base-RHOSE-4.3:openshift-0:4.3.10-202003300855.git.0.da48c1d.el8.src",
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        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "kubernetes: crafted requests to kubelet API allow for memory exhaustion"
    }
  ]
}


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Sightings

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.