fkie_cve-2020-35498
Vulnerability from fkie_nvd
Published
2021-02-11 18:15
Modified
2025-04-23 20:15
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
A vulnerability was found in openvswitch. A limitation in the implementation of userspace packet parsing can allow a malicious user to send a specially crafted packet causing the resulting megaflow in the kernel to be too wide, potentially causing a denial of service. The highest threat from this vulnerability is to system availability.
References
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1908845Issue Tracking, Patch, Third Party Advisory
secalert@redhat.comhttps://lists.debian.org/debian-lts-announce/2021/02/msg00032.htmlMailing List, Third Party Advisory
secalert@redhat.comhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UJ4DXFJWMZ325ECZXPZOSK7BOEDJZHPR/
secalert@redhat.comhttps://security.gentoo.org/glsa/202311-16
secalert@redhat.comhttps://www.debian.org/security/2021/dsa-4852Third Party Advisory
secalert@redhat.comhttps://www.openwall.com/lists/oss-security/2021/02/10/4Mailing List, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=1908845Issue Tracking, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2021/02/msg00032.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UJ4DXFJWMZ325ECZXPZOSK7BOEDJZHPR/
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/202311-16
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2021/dsa-4852Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.openwall.com/lists/oss-security/2021/02/10/4Mailing List, Patch, Third Party Advisory
Impacted products
Vendor Product Version
openvswitch openvswitch *
openvswitch openvswitch *
openvswitch openvswitch *
openvswitch openvswitch *
openvswitch openvswitch *
openvswitch openvswitch *
openvswitch openvswitch *
openvswitch openvswitch *
openvswitch openvswitch *
openvswitch openvswitch *
debian debian_linux 9.0
debian debian_linux 10.0
fedoraproject fedora 33


To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
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            },
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            {
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability was found in openvswitch. A limitation in the implementation of userspace packet parsing can allow a malicious user to send a specially crafted packet causing the resulting megaflow in the kernel to be too wide, potentially causing a denial of service. The highest threat from this vulnerability is to system availability."
    },
    {
      "lang": "es",
      "value": "Se encontr\u00f3 una vulnerabilidad en openvswitch.\u0026#xa0;Una limitaci\u00f3n en la implementaci\u00f3n del an\u00e1lisis de paquetes del espacio de usuario puede permitir a un usuario malicioso env\u00ede un paquete especialmente dise\u00f1ado, lo que hace que el megaflujo resultante en el kernel sea demasiado amplio, causando potencialmente una denegaci\u00f3n de servicio.\u0026#xa0;La mayor amenaza de esta vulnerabilidad es la disponibilidad del sistema"
    }
  ],
  "id": "CVE-2020-35498",
  "lastModified": "2025-04-23T20:15:20.000",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "HIGH",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "COMPLETE",
          "baseScore": 7.8,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:C",
          "version": "2.0"
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        "exploitabilityScore": 10.0,
        "impactScore": 6.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
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          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
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          "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",
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
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    ]
  },
  "published": "2021-02-11T18:15:15.677",
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  "sourceIdentifier": "secalert@redhat.com",
  "vulnStatus": "Modified",
  "weaknesses": [
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          "lang": "en",
          "value": "CWE-400"
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      ],
      "source": "secalert@redhat.com",
      "type": "Primary"
    }
  ]
}


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