rhsa-2020_3809
Vulnerability from csaf_redhat
Published
2020-09-23 14:14
Modified
2024-11-05 22:43
Summary
Red Hat Security Advisory: OpenShift Container Platform 4.3.38 container image security update

Notes

Topic
An update for openshift-enterprise-hyperkube-container and sriov-dp-admission-controller-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): * golang.org/x/crypto: Processing of crafted ssh-ed25519 public keys allowed for panic (CVE-2020-9283) * kubernetes: Node disk DOS by writing to container /etc/hosts (CVE-2020-8557) 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 and sriov-dp-admission-controller-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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        "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* golang.org/x/crypto: Processing of crafted ssh-ed25519 public keys allowed for panic (CVE-2020-9283)\n\n* kubernetes: Node disk DOS by writing to container /etc/hosts (CVE-2020-8557)\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"
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  "vulnerabilities": [
    {
      "acknowledgments": [
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          "names": [
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          ]
        },
        {
          "names": [
            "Kebe Liu"
          ],
          "organization": "DaoCloud",
          "summary": "Acknowledged by upstream."
        }
      ],
      "cve": "CVE-2020-8557",
      "cwe": {
        "id": "CWE-400",
        "name": "Uncontrolled Resource Consumption"
      },
      "discovery_date": "2020-05-09T00:00:00+00:00",
      "flags": [
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            "7Server-RH7-RHOSE-4.3:openshift4/ose-sriov-dp-admission-controller@sha256:88ff0bdf89bd45df738be9f905b453edc1edae8d4a3fff9209f6f5164edf5dea_ppc64le",
            "7Server-RH7-RHOSE-4.3:openshift4/ose-sriov-dp-admission-controller@sha256:e4fcb04f87b9ade6417003395a9848a1ccdd849f8910656cc8191478c541c9d3_s390x"
          ]
        }
      ],
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1835977"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in Kubernetes, where the amount of disk space the /etc/hosts file can use is unconstrained . This flaw can allow attacker-controlled pods to cause a denial of service if they have permission to write to the node\u0027s /etc/hosts file.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kubernetes: Node disk DOS by writing to container /etc/hosts",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "In OpenShift Container Platform (OCP) there is LocalStorageCapacityIsolation feature gate functionality which prevents a denial of service (DoS) attack on the node by writing to the ephemeral storage.This feature is disabled by default in OCP 3.11 and can be enabled as per [1]. Even with enabled  LocalStorageCapacityIsolation feature gate, OCP is affected by this vulnerability, therefore it is recommended to enable the feature gate and also upgrade to an OCP version which has a fix for this vulnerability.\n\n[1] https://docs.openshift.com/container-platform/3.11/install_config/configuring_ephemeral.html",
          "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": [
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          "7Server-RH7-RHOSE-4.3:openshift4/ose-hyperkube@sha256:8127897e9131efb5d35fdc0996849f7c549f2f0b4d3a6c0dc8683b106ab5a6ae_ppc64le",
          "7Server-RH7-RHOSE-4.3:openshift4/ose-hyperkube@sha256:ba56afca75eb9ab0736e8247d89f600665a6a615fb5801e4e65a1138a59415be_amd64"
        ],
        "known_not_affected": [
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          "7Server-RH7-RHOSE-4.3:openshift4/ose-sriov-dp-admission-controller@sha256:88ff0bdf89bd45df738be9f905b453edc1edae8d4a3fff9209f6f5164edf5dea_ppc64le",
          "7Server-RH7-RHOSE-4.3:openshift4/ose-sriov-dp-admission-controller@sha256:e4fcb04f87b9ade6417003395a9848a1ccdd849f8910656cc8191478c541c9d3_s390x"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2020-8557"
        },
        {
          "category": "external",
          "summary": "RHBZ#1835977",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1835977"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2020-8557",
          "url": "https://www.cve.org/CVERecord?id=CVE-2020-8557"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2020-8557",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-8557"
        },
        {
          "category": "external",
          "summary": "https://groups.google.com/g/kubernetes-security-announce/c/cB_JUsYEKyY",
          "url": "https://groups.google.com/g/kubernetes-security-announce/c/cB_JUsYEKyY"
        }
      ],
      "release_date": "2020-07-15T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2020-09-23T14:14:39+00:00",
          "details": "For OpenShift Container Platform 4.3 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/4.3/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-hyperkube@sha256:35d765bfd0987735c36737ff604aa09e0d9b5184bcf8cdc5a057f891a8178522_s390x",
            "7Server-RH7-RHOSE-4.3:openshift4/ose-hyperkube@sha256:8127897e9131efb5d35fdc0996849f7c549f2f0b4d3a6c0dc8683b106ab5a6ae_ppc64le",
            "7Server-RH7-RHOSE-4.3:openshift4/ose-hyperkube@sha256:ba56afca75eb9ab0736e8247d89f600665a6a615fb5801e4e65a1138a59415be_amd64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2020:3809"
        },
        {
          "category": "workaround",
          "details": "On OpenShift Container Platform (OCP) 3.11 and 4.x it\u0027s possible to set the allowPrivilegeEscalation Security Context Constraint to \u0027false\u0027 to prevent this. Note that this is set to \u0027true\u0027 by default, and setting it to false will prevent certain binaries which require setuid to stop working. On OCP 3.11 for example the \u0027ping\u0027 command will no longer work [1]. On OCP 4.x and later the \u0027ping\u0027 command will work with allowPrivilegeEscalation set to False, but other setuid binaries will not work.\n[1] https://docs.openshift.com/container-platform/3.11/release_notes/ocp_3_11_release_notes.html",
          "product_ids": [
            "7Server-RH7-RHOSE-4.3:openshift4/ose-hyperkube@sha256:35d765bfd0987735c36737ff604aa09e0d9b5184bcf8cdc5a057f891a8178522_s390x",
            "7Server-RH7-RHOSE-4.3:openshift4/ose-hyperkube@sha256:8127897e9131efb5d35fdc0996849f7c549f2f0b4d3a6c0dc8683b106ab5a6ae_ppc64le",
            "7Server-RH7-RHOSE-4.3:openshift4/ose-hyperkube@sha256:ba56afca75eb9ab0736e8247d89f600665a6a615fb5801e4e65a1138a59415be_amd64",
            "7Server-RH7-RHOSE-4.3:openshift4/ose-sriov-dp-admission-controller@sha256:46586a08d423c95cc94c3830944cefbe60ee5a8d8952c1c13e9c30aea06c0120_amd64",
            "7Server-RH7-RHOSE-4.3:openshift4/ose-sriov-dp-admission-controller@sha256:88ff0bdf89bd45df738be9f905b453edc1edae8d4a3fff9209f6f5164edf5dea_ppc64le",
            "7Server-RH7-RHOSE-4.3:openshift4/ose-sriov-dp-admission-controller@sha256:e4fcb04f87b9ade6417003395a9848a1ccdd849f8910656cc8191478c541c9d3_s390x"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 5.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/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-hyperkube@sha256:35d765bfd0987735c36737ff604aa09e0d9b5184bcf8cdc5a057f891a8178522_s390x",
            "7Server-RH7-RHOSE-4.3:openshift4/ose-hyperkube@sha256:8127897e9131efb5d35fdc0996849f7c549f2f0b4d3a6c0dc8683b106ab5a6ae_ppc64le",
            "7Server-RH7-RHOSE-4.3:openshift4/ose-hyperkube@sha256:ba56afca75eb9ab0736e8247d89f600665a6a615fb5801e4e65a1138a59415be_amd64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "kubernetes: Node disk DOS by writing to container /etc/hosts"
    },
    {
      "cve": "CVE-2020-9283",
      "cwe": {
        "id": "CWE-130",
        "name": "Improper Handling of Length Parameter Inconsistency"
      },
      "discovery_date": "2020-02-19T00:00:00+00:00",
      "flags": [
        {
          "label": "vulnerable_code_not_present",
          "product_ids": [
            "7Server-RH7-RHOSE-4.3:openshift4/ose-hyperkube@sha256:35d765bfd0987735c36737ff604aa09e0d9b5184bcf8cdc5a057f891a8178522_s390x",
            "7Server-RH7-RHOSE-4.3:openshift4/ose-hyperkube@sha256:8127897e9131efb5d35fdc0996849f7c549f2f0b4d3a6c0dc8683b106ab5a6ae_ppc64le",
            "7Server-RH7-RHOSE-4.3:openshift4/ose-hyperkube@sha256:ba56afca75eb9ab0736e8247d89f600665a6a615fb5801e4e65a1138a59415be_amd64"
          ]
        }
      ],
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1804533"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A denial of service vulnerability was found in the SSH package of the golang.org/x/crypto library. An attacker could exploit this flaw by supplying crafted SSH ed25519 keys to cause a crash in applications that use this package as either an SSH client or server.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "golang.org/x/crypto: Processing of crafted ssh-ed25519 public keys allows for panic",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "OpenShift Container Platform uses the vulnerable library in a number of components but strictly as an SSH client. The severity of this vulnerability is reduced for clients as it requires connections to malicious SSH servers, with the maximum impact only a client crash. This vulnerability is rated Low for OpenShift Container Platform.",
          "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-sriov-dp-admission-controller@sha256:46586a08d423c95cc94c3830944cefbe60ee5a8d8952c1c13e9c30aea06c0120_amd64",
          "7Server-RH7-RHOSE-4.3:openshift4/ose-sriov-dp-admission-controller@sha256:88ff0bdf89bd45df738be9f905b453edc1edae8d4a3fff9209f6f5164edf5dea_ppc64le",
          "7Server-RH7-RHOSE-4.3:openshift4/ose-sriov-dp-admission-controller@sha256:e4fcb04f87b9ade6417003395a9848a1ccdd849f8910656cc8191478c541c9d3_s390x"
        ],
        "known_not_affected": [
          "7Server-RH7-RHOSE-4.3:openshift4/ose-hyperkube@sha256:35d765bfd0987735c36737ff604aa09e0d9b5184bcf8cdc5a057f891a8178522_s390x",
          "7Server-RH7-RHOSE-4.3:openshift4/ose-hyperkube@sha256:8127897e9131efb5d35fdc0996849f7c549f2f0b4d3a6c0dc8683b106ab5a6ae_ppc64le",
          "7Server-RH7-RHOSE-4.3:openshift4/ose-hyperkube@sha256:ba56afca75eb9ab0736e8247d89f600665a6a615fb5801e4e65a1138a59415be_amd64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2020-9283"
        },
        {
          "category": "external",
          "summary": "RHBZ#1804533",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1804533"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2020-9283",
          "url": "https://www.cve.org/CVERecord?id=CVE-2020-9283"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2020-9283",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-9283"
        },
        {
          "category": "external",
          "summary": "https://groups.google.com/forum/#!topic/golang-announce/3L45YRc91SY",
          "url": "https://groups.google.com/forum/#!topic/golang-announce/3L45YRc91SY"
        }
      ],
      "release_date": "2020-02-21T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2020-09-23T14:14:39+00:00",
          "details": "For OpenShift Container Platform 4.3 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/4.3/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-sriov-dp-admission-controller@sha256:46586a08d423c95cc94c3830944cefbe60ee5a8d8952c1c13e9c30aea06c0120_amd64",
            "7Server-RH7-RHOSE-4.3:openshift4/ose-sriov-dp-admission-controller@sha256:88ff0bdf89bd45df738be9f905b453edc1edae8d4a3fff9209f6f5164edf5dea_ppc64le",
            "7Server-RH7-RHOSE-4.3:openshift4/ose-sriov-dp-admission-controller@sha256:e4fcb04f87b9ade6417003395a9848a1ccdd849f8910656cc8191478c541c9d3_s390x"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2020:3809"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "7Server-RH7-RHOSE-4.3:openshift4/ose-sriov-dp-admission-controller@sha256:46586a08d423c95cc94c3830944cefbe60ee5a8d8952c1c13e9c30aea06c0120_amd64",
            "7Server-RH7-RHOSE-4.3:openshift4/ose-sriov-dp-admission-controller@sha256:88ff0bdf89bd45df738be9f905b453edc1edae8d4a3fff9209f6f5164edf5dea_ppc64le",
            "7Server-RH7-RHOSE-4.3:openshift4/ose-sriov-dp-admission-controller@sha256:e4fcb04f87b9ade6417003395a9848a1ccdd849f8910656cc8191478c541c9d3_s390x"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Low"
        }
      ],
      "title": "golang.org/x/crypto: Processing of crafted ssh-ed25519 public keys allows for panic"
    }
  ]
}


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