rhsa-2021_1051
Vulnerability from csaf_redhat
Published
2021-03-31 12:59
Modified
2024-11-15 07:30
Summary
Red Hat Security Advisory: RHV-H enhancement and security update (redhat-virtualization-host) 4.3.14

Notes

Topic
An update for 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 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
The redhat-virtualization-host packages provide the Red Hat Virtualization Host. These packages include redhat-release-virtualization-host. 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): * lldp/openvswitch: denial of service via externally triggered memory leak (CVE-2020-27827) 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.
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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      "cwe": {
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        "name": "Uncontrolled Resource Consumption"
      },
      "discovery_date": "2021-01-13T00:00:00+00:00",
      "flags": [
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          ]
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      ],
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1921438"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in multiple versions of Open vSwitch. Specially crafted LLDP packets can cause memory to be lost when allocating data to handle specific optional TLVs, potentially causing a denial of service. The highest threat from this vulnerability is to system availability.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "lldp/openvswitch: denial of service via externally triggered memory leak",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "Red Hat OpenStack Platform 13\u0027s openvswitch package will receive it\u0027s fixes from Fast Datapath.",
          "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",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2020-27827"
        },
        {
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          "summary": "RHBZ#1921438",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1921438"
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          "summary": "https://www.cve.org/CVERecord?id=CVE-2020-27827",
          "url": "https://www.cve.org/CVERecord?id=CVE-2020-27827"
        },
        {
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          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2020-27827",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-27827"
        },
        {
          "category": "external",
          "summary": "https://mail.openvswitch.org/pipermail/ovs-dev/2021-January/379471.html",
          "url": "https://mail.openvswitch.org/pipermail/ovs-dev/2021-January/379471.html"
        }
      ],
      "release_date": "2021-01-13T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2021-03-31T12:59:09+00:00",
          "details": "Before applying this update, make sure all previously released errata\nrelevant to your system have been applied.\n\nFor details on how to apply this update, refer to:\n\nhttps://access.redhat.com/articles/2974891",
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          "restart_required": {
            "category": "none"
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          "url": "https://access.redhat.com/errata/RHSA-2021:1051"
        }
      ],
      "scores": [
        {
          "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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
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        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "lldp/openvswitch: denial of service via externally triggered memory leak"
    }
  ]
}


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