rhsa-2019_3811
Vulnerability from csaf_redhat
Published
2019-11-07 16:55
Modified
2024-11-05 21:35
Summary
Red Hat Security Advisory: OpenShift Container Platform 3.9 atomic-openshift security update

Notes

Topic
An update for atomic-openshift is now available for Red Hat OpenShift Container Platform 3.9. 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 3.9.102. Security Fix(es): * kubernetes: YAML parsing vulnerable to "Billion Laughs" attack, allowing for remote denial of service (CVE-2019-11253) * atomic-openshift: OpenShift builds don't verify SSH Host Keys for the Git repository (CVE-2019-10150) * kubernetes: Incomplete fixes for CVE-2019-1002101 and CVE-2019-11246, kubectl cp potential directory traversal (CVE-2019-11249) * 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 3.9.\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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  },
  "vulnerabilities": [
    {
      "acknowledgments": [
        {
          "names": [
            "@l14n_uk"
          ]
        }
      ],
      "cve": "CVE-2019-10150",
      "cwe": {
        "id": "CWE-287",
        "name": "Improper Authentication"
      },
      "discovery_date": "2019-05-17T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1713433"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "It was found that OpenShift Container Platform does not perform SSH Host Key checking when using ssh key authentication during builds. An attacker, with the ability to redirect network traffic, could use this to alter the resulting build output.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "atomic-openshift: OpenShift builds don\u0027t verify SSH Host Keys for the git repository",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "OpenShift Container Platform allows for various types of \"source clone secrets\" to be defined in order to permit building from non-public git repositories.  When using ssh key authentication, the server host key checking function is disabled.\n\nAn attacker with the ability to redirect the network traffic and perform a \"man in the middle\" attack will be able to redirect the build job to use arbitrary content of their choosing.\n\nNote that the same flaw (non-verification of remote server) is present when using HTTP, or when using HTTPS with TLS verification manually disabled.",
          "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": {
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          "category": "self",
          "summary": "Canonical URL",
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        },
        {
          "category": "external",
          "summary": "RHBZ#1713433",
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        },
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          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2019-10150",
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        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2019-10150",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-10150"
        },
        {
          "category": "external",
          "summary": "https://docs.openshift.com/container-platform/3.11/dev_guide/builds/build_inputs.html#source-secrets-ssh-key-authentication",
          "url": "https://docs.openshift.com/container-platform/3.11/dev_guide/builds/build_inputs.html#source-secrets-ssh-key-authentication"
        }
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      "release_date": "2019-05-29T00:00:00+00:00",
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          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2019:3811"
        },
        {
          "category": "workaround",
          "details": "Use only methods (such as HTTPS with TLS verification) that enable the identity of the remote repository to be validated.",
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        {
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            "attackComplexity": "HIGH",
            "attackVector": "ADJACENT_NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 5.9,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.0/AV:A/AC:H/PR:N/UI:R/S:U/C:L/I:H/A:L",
            "version": "3.0"
          },
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      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "atomic-openshift: OpenShift builds don\u0027t verify SSH Host Keys for the git repository"
    },
    {
      "cve": "CVE-2019-11249",
      "cwe": {
        "id": "CWE-22",
        "name": "Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)"
      },
      "discovery_date": "2019-08-05T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1737651"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "The kubectl cp command allows copying files between containers and the user machine. To copy files from a container, Kubernetes runs tar inside the container to create a tar archive, copies it over the network, and kubectl unpacks it on the user\u2019s machine. If the tar binary in the container is malicious, it could run any code and output unexpected, malicious results. An attacker could use this to write files to any path on the user\u2019s machine when kubectl cp is called, limited only by the system permissions of the local user. Kubernetes affected versions include versions prior to 1.13.9, versions prior to 1.14.5, versions prior to 1.15.2, and versions 1.1, 1.2, 1.4, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 1.10, 1.11, 1.12.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kubernetes: Incomplete fixes for CVE-2019-1002101 and CVE-2019-11246, kubectl cp potential directory traversal",
          "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"
        }
      ],
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        },
        {
          "category": "external",
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          "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-11249"
        },
        {
          "category": "external",
          "summary": "https://groups.google.com/forum/#!topic/kubernetes-security-discuss/Vf31dXp0EJc",
          "url": "https://groups.google.com/forum/#!topic/kubernetes-security-discuss/Vf31dXp0EJc"
        }
      ],
      "release_date": "2019-08-05T00:00:00+00:00",
      "remediations": [
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          "category": "vendor_fix",
          "date": "2019-11-07T16:55:40+00:00",
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          "details": "Moderate"
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      ],
      "title": "kubernetes: Incomplete fixes for CVE-2019-1002101 and CVE-2019-11246, kubectl cp potential directory traversal"
    },
    {
      "cve": "CVE-2019-11251",
      "cwe": {
        "id": "CWE-59",
        "name": "Improper Link Resolution Before File Access (\u0027Link Following\u0027)"
      },
      "discovery_date": "2019-09-18T00:00:00+00:00",
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        {
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        }
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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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        },
        {
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    },
    {
      "cve": "CVE-2019-11253",
      "cwe": {
        "id": "CWE-400",
        "name": "Uncontrolled Resource Consumption"
      },
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          "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"
        }
      ],
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        {
          "category": "external",
          "summary": "https://www.stackrox.com/post/2019/09/protecting-kubernetes-api-against-cve-2019-11253-billion-laughs-attack/",
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        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "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",
            "version": "3.0"
          },
          "products": [
            "7Server-RH7-RHOSE-3.9:atomic-openshift-0:3.9.102-1.git.0.6411f52.el7.src",
            "7Server-RH7-RHOSE-3.9:atomic-openshift-0:3.9.102-1.git.0.6411f52.el7.x86_64",
            "7Server-RH7-RHOSE-3.9:atomic-openshift-clients-0:3.9.102-1.git.0.6411f52.el7.x86_64",
            "7Server-RH7-RHOSE-3.9:atomic-openshift-clients-redistributable-0:3.9.102-1.git.0.6411f52.el7.x86_64",
            "7Server-RH7-RHOSE-3.9:atomic-openshift-cluster-capacity-0:3.9.102-1.git.0.6411f52.el7.x86_64",
            "7Server-RH7-RHOSE-3.9:atomic-openshift-docker-excluder-0:3.9.102-1.git.0.6411f52.el7.noarch",
            "7Server-RH7-RHOSE-3.9:atomic-openshift-excluder-0:3.9.102-1.git.0.6411f52.el7.noarch",
            "7Server-RH7-RHOSE-3.9:atomic-openshift-federation-services-0:3.9.102-1.git.0.6411f52.el7.x86_64",
            "7Server-RH7-RHOSE-3.9:atomic-openshift-master-0:3.9.102-1.git.0.6411f52.el7.x86_64",
            "7Server-RH7-RHOSE-3.9:atomic-openshift-node-0:3.9.102-1.git.0.6411f52.el7.x86_64",
            "7Server-RH7-RHOSE-3.9:atomic-openshift-pod-0:3.9.102-1.git.0.6411f52.el7.x86_64",
            "7Server-RH7-RHOSE-3.9:atomic-openshift-sdn-ovs-0:3.9.102-1.git.0.6411f52.el7.x86_64",
            "7Server-RH7-RHOSE-3.9:atomic-openshift-service-catalog-0:3.9.102-1.git.0.6411f52.el7.x86_64",
            "7Server-RH7-RHOSE-3.9:atomic-openshift-template-service-broker-0:3.9.102-1.git.0.6411f52.el7.x86_64",
            "7Server-RH7-RHOSE-3.9:atomic-openshift-tests-0:3.9.102-1.git.0.6411f52.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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