rhsa-2021_3631
Vulnerability from csaf_redhat
Published
2021-09-28 05:26
Modified
2024-11-22 17:33
Summary
Red Hat Security Advisory: OpenShift Container Platform 4.8.13 security update

Notes

Topic
Red Hat OpenShift Container Platform release 4.8.13 is now available with updates to packages and images that fix several bugs and add enhancements. 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 RPM packages for Red Hat OpenShift Container Platform 4.8.13. See the following advisory for the container images for this release: https://access.redhat.com/errata/RHSA-2021:3632 Security Fix(es): * kubernetes: Symlink exchange can allow host filesystem access (CVE-2021-25741) 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. All OpenShift Container Platform 4.8 users are advised to upgrade to these updated packages and images when they are available in the appropriate release channel. To check for available updates, use the OpenShift Console or the CLI oc command. Instructions for upgrading a cluster are available at https://docs.openshift.com/container-platform/4.8/updating/updating-cluster -between-minor.html#understanding-upgrade-channels_updating-cluster-between -minor
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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  "vulnerabilities": [
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      "acknowledgments": [
        {
          "names": [
            "the Kubernetes Security Response Committee"
          ]
        },
        {
          "names": [
            "Fabricio Voznika",
            "Mark Wolters"
          ],
          "organization": "Google",
          "summary": "Acknowledged by upstream."
        }
      ],
      "cve": "CVE-2021-25741",
      "cwe": {
        "id": "CWE-59",
        "name": "Improper Link Resolution Before File Access (\u0027Link Following\u0027)"
      },
      "discovery_date": "2021-08-13T00:00:00+00:00",
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      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1993749"
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      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in kubernetes. An authorized user can exploit this by creating pods with crafted subpath volume mounts to access files and directories outside of the volume, including on the host node\u0027s filesystem.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kubernetes: Symlink exchange can allow host filesystem access",
          "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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          "url": "https://groups.google.com/g/kubernetes-security-announce/c/nyfdhK24H7s"
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          "details": "For OpenShift Container Platform 4.8 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/4.8/release_notes/ocp-4-8-release-notes.html\n\nDetails on how to access this content are available at\nhttps://docs.openshift.com/container-platform/4.8/updating/updating-cluster-cli.html",
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            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
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      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "kubernetes: Symlink exchange can allow host filesystem access"
    }
  ]
}


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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
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