rhsa-2019_3905
Vulnerability from csaf_redhat
Published
2019-11-18 16:23
Modified
2024-11-22 13:52
Summary
Red Hat Security Advisory: OpenShift Container Platform 3.11 atomic-openshift security update

Notes

Topic
An update for atomic-openshift is now available for Red Hat OpenShift Container Platform 3.11. Red Hat Product Security has rated this update as having a security impact of Important. 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. This advisory contains the atomic-openshift RPM package for Red Hat OpenShift Container Platform 3.11.154. Security Fix(es): * kubernetes: YAML parsing vulnerable to "Billion Laughs" attack, allowing for remote denial of service (CVE-2019-11253) * kubernetes: `kubectl cp` allows for arbitrary file write via double symlinks (CVE-2019-11251) 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 atomic-openshift is now available for Red Hat OpenShift\nContainer Platform 3.11.\n\nRed Hat Product Security has rated this update as having a security impact of Important. 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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      "cwe": {
        "id": "CWE-59",
        "name": "Improper Link Resolution Before File Access (\u0027Link Following\u0027)"
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        {
          "category": "description",
          "text": "The Kubernetes kubectl cp command in versions 1.1-1.12, and versions prior to 1.13.11, 1.14.7, and 1.15.4 allows a combination of two symlinks provided by tar output of a malicious container to place a file outside of the destination directory specified in the kubectl cp invocation. This could be used to allow an attacker to place a nefarious file using a symlink, outside of the destination tree.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kubernetes: `kubectl cp` allows for arbitrary file write via double symlinks",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This issue did not affect the version of Kubernetes(embedded in heketi) shipped with Red Hat Gluster Storage 3 as it does not include the symlink support for kubectl cp.",
          "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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          "category": "self",
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          "restart_required": {
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          "url": "https://access.redhat.com/errata/RHSA-2019:3905"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N",
            "version": "3.0"
          },
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          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "kubernetes: `kubectl cp` allows for arbitrary file write via double symlinks"
    },
    {
      "cve": "CVE-2019-11253",
      "cwe": {
        "id": "CWE-400",
        "name": "Uncontrolled Resource Consumption"
      },
      "discovery_date": "2019-10-01T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1757701"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found kubernetes. The parsing of YAML manifests by the Kubernetes API server could lead to a denial-of-service attack leaving it vulnerable to an instance of a \"billion laughs\" attack. The highest threat from this vulnerability is to system availability.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kubernetes: YAML parsing vulnerable to \"Billion Laughs\" attack, allowing for remote denial of service",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "For Red Hat OpenStack Platform, because kubernetes is not directly used in director-operator, the RHOSP Impact has been moved to Moderate.",
          "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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      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2019-11253"
        },
        {
          "category": "external",
          "summary": "RHBZ#1757701",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1757701"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2019-11253",
          "url": "https://www.cve.org/CVERecord?id=CVE-2019-11253"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2019-11253",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-11253"
        },
        {
          "category": "external",
          "summary": "https://www.stackrox.com/post/2019/09/protecting-kubernetes-api-against-cve-2019-11253-billion-laughs-attack/",
          "url": "https://www.stackrox.com/post/2019/09/protecting-kubernetes-api-against-cve-2019-11253-billion-laughs-attack/"
        }
      ],
      "release_date": "2019-09-28T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2019-11-18T16:23:08+00:00",
          "details": "For OpenShift Container Platform 3.11, see the following documentation, which\nwill be updated shortly for release 3.11.154, for important instructions on\nhow to upgrade your cluster and fully apply this asynchronous errata\nupdate:\n\nhttps://docs.openshift.com/container-platform/3.11/release_notes/ocp_3_11_release_notes.html",
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      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
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            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
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            "7Server-RH7-RHOSE-3.11:atomic-openshift-pod-0:3.11.154-1.git.0.7a097ad.el7.x86_64",
            "7Server-RH7-RHOSE-3.11:atomic-openshift-sdn-ovs-0:3.11.154-1.git.0.7a097ad.el7.ppc64le",
            "7Server-RH7-RHOSE-3.11:atomic-openshift-sdn-ovs-0:3.11.154-1.git.0.7a097ad.el7.x86_64",
            "7Server-RH7-RHOSE-3.11:atomic-openshift-template-service-broker-0:3.11.154-1.git.0.7a097ad.el7.ppc64le",
            "7Server-RH7-RHOSE-3.11:atomic-openshift-template-service-broker-0:3.11.154-1.git.0.7a097ad.el7.x86_64",
            "7Server-RH7-RHOSE-3.11:atomic-openshift-tests-0:3.11.154-1.git.0.7a097ad.el7.ppc64le",
            "7Server-RH7-RHOSE-3.11:atomic-openshift-tests-0:3.11.154-1.git.0.7a097ad.el7.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "kubernetes: YAML parsing vulnerable to \"Billion Laughs\" attack, allowing for remote denial of service"
    }
  ]
}


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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.