FKIE_CVE-2019-15753

Vulnerability from fkie_nvd - Published: 2019-08-28 21:15 - Updated: 2026-06-17 02:21
Severity
9.1 (Critical) - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Summary
In OpenStack os-vif 1.15.x before 1.15.2, and 1.16.0, a hard-coded MAC aging time of 0 disables MAC learning in linuxbridge, forcing obligatory Ethernet flooding of non-local destinations, which both impedes network performance and allows users to possibly view the content of packets for instances belonging to other tenants sharing the same network. Only deployments using the linuxbridge backend are affected. This occurs in PyRoute2.add() in internal/command/ip/linux/impl_pyroute2.py.
References
cve@mitre.orghttp://www.openwall.com/lists/oss-security/2019/08/29/2Mailing List, Patch, Third Party Advisory
cve@mitre.orghttps://launchpad.net/bugs/1837252Issue Tracking, Third Party Advisory
cve@mitre.orghttps://review.opendev.org/672834Patch
cve@mitre.orghttps://review.opendev.org/678098Patch
cve@mitre.orghttps://security.openstack.org/ossa/OSSA-2019-004.htmlPatch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2019/08/29/2Mailing List, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://launchpad.net/bugs/1837252Issue Tracking, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://review.opendev.org/672834Patch
af854a3a-2127-422b-91ae-364da2661108https://review.opendev.org/678098Patch
af854a3a-2127-422b-91ae-364da2661108https://security.openstack.org/ossa/OSSA-2019-004.htmlPatch, Vendor Advisory
Impacted products
Vendor Product Version
openstack os-vif *
openstack os-vif 1.16.0
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "cve@mitre.org"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:openstack:os-vif:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "DD398F71-724F-4AB0-ACD2-A1D7CD5D1D14",
              "versionEndExcluding": "1.15.2",
              "versionStartIncluding": "1.15.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:openstack:os-vif:1.16.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "FD6DDB42-392D-4384-BDB3-44747D0CD355",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In OpenStack os-vif 1.15.x before 1.15.2, and 1.16.0, a hard-coded MAC aging time of 0 disables MAC learning in linuxbridge, forcing obligatory Ethernet flooding of non-local destinations, which both impedes network performance and allows users to possibly view the content of packets for instances belonging to other tenants sharing the same network. Only deployments using the linuxbridge backend are affected. This occurs in PyRoute2.add() in internal/command/ip/linux/impl_pyroute2.py."
    },
    {
      "lang": "es",
      "value": "En OpenStack os-vif versiones 1.15.x anteriores a 1.15.2 y versi\u00f3n 1.16.0, un tiempo de envejecimiento de la MAC de 0 embebido deshabilita el aprendizaje de MAC en linuxbridge, forzando a la inundaci\u00f3n obligatoria de Ethernet de destinos no locales, lo que impide tanto el desempe\u00f1o de la red como permitir a usuarios posiblemente visualizar el contenido de paquetes para instancias que pertenecen a otros inquilinos que comparten la misma red. Solo las implementaciones que utilizan el backend de linuxbridge est\u00e1n afectadas. Esto ocurre en la funci\u00f3n PyRoute2.add() en el archivo internal/command/ip/linux/impl_pyroute2.py."
    }
  ],
  "id": "CVE-2019-15753",
  "lastModified": "2026-06-17T02:21:01.080",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 6.4,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 4.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.1,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
          "version": "3.0"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.2,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2019-08-28T21:15:10.943",
  "references": [
    {
      "source": "cve@mitre.org",
      "tags": [
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        "Patch",
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      "url": "http://www.openwall.com/lists/oss-security/2019/08/29/2"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
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      "url": "https://launchpad.net/bugs/1837252"
    },
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      "source": "cve@mitre.org",
      "tags": [
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      "url": "https://review.opendev.org/672834"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
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    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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      "url": "http://www.openwall.com/lists/oss-security/2019/08/29/2"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Issue Tracking",
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      ],
      "url": "https://launchpad.net/bugs/1837252"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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      "url": "https://review.opendev.org/672834"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
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    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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      ],
      "url": "https://security.openstack.org/ossa/OSSA-2019-004.html"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-770"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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