rhsa-2018_1275
Vulnerability from csaf_redhat
Published
2018-05-02 13:15
Modified
2024-11-14 23:42
Summary
Red Hat Security Advisory: redhat-virtualization-host security update

Notes

Topic
An update for redhat-release-virtualization-host and redhat-virtualization-host is now available for Red Hat Virtualization 4 for Red Hat Enterprise Linux 7. 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
The redhat-virtualization-host packages provide the Red Hat Virtualization Host. These packages include redhat-release-virtualization-host, ovirt-node, and rhev-hypervisor. Red Hat Virtualization Hosts (RHVH) are installed using a special build of Red Hat Enterprise Linux with only the packages required to host virtual machines. RHVH features a Cockpit user interface for monitoring the host's resources and performing administrative tasks. The ovirt-node-ng packages provide the Red Hat Virtualization Host. These packages include redhat-release-virtualization-host, ovirt-node, and rhev-hypervisor. Red Hat Virtualization Hosts (RHVH) are installed using a special build of Red Hat Enterprise Linux with only the packages required to host virtual machines. RHVH features a Cockpit user interface for monitoring the host's resources and performing administrative tasks. Security Fix(es): * glusterfs: Privilege escalation via gluster_shared_storage when snapshot scheduling is enabled (CVE-2018-1088) * It was found that fix for CVE-2018-1088 introduced new vulnerability in the way 'auth.allow' is implemented in glusterfs server. An unauthenticated gluster client could mount gluster storage volumes. (CVE-2018-1112) For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section. This issue was discovered by John Strunk (Red Hat).
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 redhat-release-virtualization-host and redhat-virtualization-host is now available for Red Hat Virtualization 4 for Red Hat Enterprise Linux 7.\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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        "text": "The redhat-virtualization-host packages provide the Red Hat Virtualization Host. These packages include redhat-release-virtualization-host, ovirt-node, and rhev-hypervisor. Red Hat Virtualization Hosts (RHVH) are installed using a special build of Red Hat Enterprise Linux with only the packages required to host virtual machines. RHVH features a Cockpit user interface for monitoring the host\u0027s resources and performing administrative tasks.\n\nThe ovirt-node-ng packages provide the Red Hat Virtualization Host. These packages include redhat-release-virtualization-host, ovirt-node, and rhev-hypervisor. Red Hat Virtualization Hosts (RHVH) are installed using a special build of Red Hat Enterprise Linux with only the packages required to host virtual machines. RHVH features a Cockpit user interface for monitoring the host\u0027s resources and performing administrative tasks.\n\nSecurity Fix(es):\n\n* glusterfs: Privilege escalation via gluster_shared_storage when snapshot scheduling is enabled (CVE-2018-1088)\n\n* It was found that fix for CVE-2018-1088 introduced new vulnerability in the way \u0027auth.allow\u0027 is implemented in glusterfs server. An unauthenticated gluster client could mount gluster storage volumes. (CVE-2018-1112)\n\nFor more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section.\n\nThis issue was discovered by John Strunk (Red Hat).",
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    {
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        {
          "names": [
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          ],
          "organization": "Red Hat",
          "summary": "This issue was discovered by Red Hat."
        }
      ],
      "cve": "CVE-2018-1088",
      "cwe": {
        "id": "CWE-266",
        "name": "Incorrect Privilege Assignment"
      },
      "discovery_date": "2018-03-20T00:00:00+00:00",
      "ids": [
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          "text": "1558721"
        }
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      "notes": [
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          "category": "description",
          "text": "A privilege escalation flaw was found in gluster snapshot scheduler. Any gluster client allowed to mount gluster volumes could also mount shared gluster storage volume and escalate privileges by scheduling malicious cronjob via symlink.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "glusterfs: Privilege escalation via gluster_shared_storage when snapshot scheduling is enabled",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This vulnerability affects gluster servers that have, or have previously had, Gluster volume snapshot scheduling enabled from the CLI. Red Hat Enterprise Virtualization supports volume snapshot scheduling from the Web UI, which uses a distinct mechanism that is not subject to this vulnerability. VM snapshots are not impacted by this flaw. For more information, please see the Vulnerability Article linked under External References.\n\nThis issue did not affect the versions of glusterfs as shipped with Red Hat Enterprise Linux 6, and 7 because only gluster client is shipped in these products. CVE-2018-1088 affects glusterfs-server package as shipped with Red Hat Gluster Storage 3.",
          "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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          "7Server-RHEV-4-Hypervisor-7:redhat-virtualization-host-image-update-0:4.1-20180426.0.el7_5.noarch",
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          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2018-1088"
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          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1558721"
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          "summary": "https://www.cve.org/CVERecord?id=CVE-2018-1088",
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        {
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          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2018-1088",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2018-1088"
        },
        {
          "category": "external",
          "summary": "https://access.redhat.com/articles/3414511",
          "url": "https://access.redhat.com/articles/3414511"
        }
      ],
      "release_date": "2018-04-18T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2018-05-02T13:15:30+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
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          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2018:1275"
        },
        {
          "category": "workaround",
          "details": "To limit exposure of gluster server nodes :  \n\n1. gluster server should be on LAN and not reachable from public networks.  \n2. Use gluster auth.allow and auth.reject.  \n3. Use TLS certificates between gluster server nodes and clients.  \n\nCaveat: This would only mitigate attacks from unauthorized malicious clients. gluster clients allowed by auth.allow or having signed TLS client certificates would still be able to trigger this attack.",
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      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "ADJACENT_NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.3,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H",
            "version": "3.0"
          },
          "products": [
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            "7Server-RHEV-4-Hypervisor-7:redhat-virtualization-host-image-update-0:4.1-20180426.0.el7_5.noarch",
            "7Server-RHEV-4-HypervisorBuild-7:redhat-release-virtualization-host-0:4.1-11.0.el7.src",
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          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Low"
        }
      ],
      "title": "glusterfs: Privilege escalation via gluster_shared_storage when snapshot scheduling is enabled"
    }
  ]
}


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