gsd-2019-11479
Vulnerability from gsd
Modified
2023-12-13 01:24
Details
Jonathan Looney discovered that the Linux kernel default MSS is hard-coded to 48 bytes. This allows a remote peer to fragment TCP resend queues significantly more than if a larger MSS were enforced. A remote attacker could use this to cause a denial of service. This has been fixed in stable kernel releases 4.4.182, 4.9.182, 4.14.127, 4.19.52, 5.1.11, and is fixed in commits 967c05aee439e6e5d7d805e195b3a20ef5c433d6 and 5f3e2bf008c2221478101ee72f5cb4654b9fc363.
Aliases
Aliases
CVE-2019-11479


To clipboard 

{
  "GSD": {
    "alias": "CVE-2019-11479",
    "description": "Jonathan Looney discovered that the Linux kernel default MSS is hard-coded to 48 bytes. This allows a remote peer to fragment TCP resend queues significantly more than if a larger MSS were enforced. A remote attacker could use this to cause a denial of service. This has been fixed in stable kernel releases 4.4.182, 4.9.182, 4.14.127, 4.19.52, 5.1.11, and is fixed in commits 967c05aee439e6e5d7d805e195b3a20ef5c433d6 and 5f3e2bf008c2221478101ee72f5cb4654b9fc363.",
    "id": "GSD-2019-11479",
    "references": [
      "https://www.suse.com/security/cve/CVE-2019-11479.html",
      "https://www.debian.org/security/2019/dsa-4465",
      "https://access.redhat.com/errata/RHSA-2019:1699",
      "https://access.redhat.com/errata/RHSA-2019:1602",
      "https://access.redhat.com/errata/RHSA-2019:1594",
      "https://access.redhat.com/errata/RHSA-2019:1490",
      "https://access.redhat.com/errata/RHSA-2019:1489",
      "https://access.redhat.com/errata/RHSA-2019:1488",
      "https://access.redhat.com/errata/RHSA-2019:1487",
      "https://access.redhat.com/errata/RHSA-2019:1486",
      "https://access.redhat.com/errata/RHSA-2019:1485",
      "https://access.redhat.com/errata/RHSA-2019:1484",
      "https://access.redhat.com/errata/RHSA-2019:1483",
      "https://access.redhat.com/errata/RHSA-2019:1482",
      "https://access.redhat.com/errata/RHSA-2019:1481",
      "https://access.redhat.com/errata/RHSA-2019:1480",
      "https://access.redhat.com/errata/RHSA-2019:1479",
      "https://ubuntu.com/security/CVE-2019-11479",
      "https://advisories.mageia.org/CVE-2019-11479.html",
      "https://security.archlinux.org/CVE-2019-11479",
      "https://alas.aws.amazon.com/cve/html/CVE-2019-11479.html",
      "https://linux.oracle.com/cve/CVE-2019-11479.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2019-11479"
      ],
      "details": "Jonathan Looney discovered that the Linux kernel default MSS is hard-coded to 48 bytes. This allows a remote peer to fragment TCP resend queues significantly more than if a larger MSS were enforced. A remote attacker could use this to cause a denial of service. This has been fixed in stable kernel releases 4.4.182, 4.9.182, 4.14.127, 4.19.52, 5.1.11, and is fixed in commits 967c05aee439e6e5d7d805e195b3a20ef5c433d6 and 5f3e2bf008c2221478101ee72f5cb4654b9fc363.",
      "id": "GSD-2019-11479",
      "modified": "2023-12-13T01:24:00.752481Z",
      "schema_version": "1.4.0"
    }
  },
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        "DATE_PUBLIC": "2019-06-17T00:00:00.000Z",
        "ID": "CVE-2019-11479",
        "STATE": "PUBLIC"
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          "lang": "eng",
          "value": "Jonathan Looney from Netflix"
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            "value": "Jonathan Looney discovered that the Linux kernel default MSS is hard-coded to 48 bytes. This allows a remote peer to fragment TCP resend queues significantly more than if a larger MSS were enforced. A remote attacker could use this to cause a denial of service. This has been fixed in stable kernel releases 4.4.182, 4.9.182, 4.14.127, 4.19.52, 5.1.11, and is fixed in commits 967c05aee439e6e5d7d805e195b3a20ef5c433d6 and 5f3e2bf008c2221478101ee72f5cb4654b9fc363."
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          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
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            "name": "108818",
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            "name": "[oss-security] 20190706 Re: linux-distros membership application - Microsoft",
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          {
            "name": "https://www.oracle.com/security-alerts/cpuoct2020.html",
            "refsource": "MISC",
            "url": "https://www.oracle.com/security-alerts/cpuoct2020.html"
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          {
            "name": "https://github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-001.md",
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            "url": "https://github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-001.md"
          },
          {
            "name": "https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/SACKPanic",
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          {
            "name": "https://access.redhat.com/security/vulnerabilities/tcpsack",
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            "refsource": "CONFIRM",
            "url": "https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44193"
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            "url": "https://kc.mcafee.com/corporate/index?page=content\u0026id=SB10287"
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            "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-462066.pdf"
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            },
            {
              "name": "https://www.synology.com/security/advisory/Synology_SA_19_28",
              "refsource": "CONFIRM",
              "tags": [
                "Third Party Advisory"
              ],
              "url": "https://www.synology.com/security/advisory/Synology_SA_19_28"
            },
            {
              "name": "https://security.netapp.com/advisory/ntap-20190625-0001/",
              "refsource": "CONFIRM",
              "tags": [
                "Third Party Advisory"
              ],
              "url": "https://security.netapp.com/advisory/ntap-20190625-0001/"
            },
            {
              "name": "RHSA-2019:1594",
              "refsource": "REDHAT",
              "tags": [
                "Third Party Advisory"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2019:1594"
            },
            {
              "name": "RHSA-2019:1602",
              "refsource": "REDHAT",
              "tags": [
                "Third Party Advisory"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2019:1602"
            },
            {
              "name": "https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2019-0008",
              "refsource": "CONFIRM",
              "tags": [
                "Third Party Advisory"
              ],
              "url": "https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2019-0008"
            },
            {
              "name": "https://kc.mcafee.com/corporate/index?page=content\u0026id=SB10287",
              "refsource": "CONFIRM",
              "tags": [
                "Third Party Advisory"
              ],
              "url": "https://kc.mcafee.com/corporate/index?page=content\u0026id=SB10287"
            },
            {
              "name": "[oss-security] 20190628 Re: linux-distros membership application - Microsoft",
              "refsource": "MLIST",
              "tags": [
                "Mailing List",
                "Third Party Advisory"
              ],
              "url": "http://www.openwall.com/lists/oss-security/2019/06/28/2"
            },
            {
              "name": "USN-4041-2",
              "refsource": "UBUNTU",
              "tags": [
                "Third Party Advisory"
              ],
              "url": "https://usn.ubuntu.com/4041-2/"
            },
            {
              "name": "[oss-security] 20190706 Re: linux-distros membership application - Microsoft",
              "refsource": "MLIST",
              "tags": [
                "Mailing List",
                "Third Party Advisory"
              ],
              "url": "http://www.openwall.com/lists/oss-security/2019/07/06/3"
            },
            {
              "name": "[oss-security] 20190706 Re: linux-distros membership application - Microsoft",
              "refsource": "MLIST",
              "tags": [
                "Mailing List",
                "Third Party Advisory"
              ],
              "url": "http://www.openwall.com/lists/oss-security/2019/07/06/4"
            },
            {
              "name": "RHSA-2019:1699",
              "refsource": "REDHAT",
              "tags": [
                "Third Party Advisory"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2019:1699"
            },
            {
              "name": "USN-4041-1",
              "refsource": "UBUNTU",
              "tags": [
                "Third Party Advisory"
              ],
              "url": "https://usn.ubuntu.com/4041-1/"
            },
            {
              "name": "https://cert-portal.siemens.com/productcert/pdf/ssa-462066.pdf",
              "refsource": "CONFIRM",
              "tags": [
                "Third Party Advisory"
              ],
              "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-462066.pdf"
            },
            {
              "name": "https://www.us-cert.gov/ics/advisories/icsa-19-253-03",
              "refsource": "MISC",
              "tags": [
                "Third Party Advisory",
                "US Government Resource"
              ],
              "url": "https://www.us-cert.gov/ics/advisories/icsa-19-253-03"
            },
            {
              "name": "https://support.f5.com/csp/article/K35421172?utm_source=f5support\u0026amp;utm_medium=RSS",
              "refsource": "CONFIRM",
              "tags": [
                "Third Party Advisory"
              ],
              "url": "https://support.f5.com/csp/article/K35421172?utm_source=f5support\u0026amp;utm_medium=RSS"
            },
            {
              "name": "https://www.oracle.com/security-alerts/cpujan2020.html",
              "refsource": "MISC",
              "tags": [
                "Third Party Advisory"
              ],
              "url": "https://www.oracle.com/security-alerts/cpujan2020.html"
            },
            {
              "name": "https://www.us-cert.gov/ics/advisories/icsma-20-170-06",
              "refsource": "MISC",
              "tags": [
                "Third Party Advisory",
                "US Government Resource"
              ],
              "url": "https://www.us-cert.gov/ics/advisories/icsma-20-170-06"
            },
            {
              "name": "http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2020-010.txt",
              "refsource": "CONFIRM",
              "tags": [
                "Third Party Advisory"
              ],
              "url": "http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2020-010.txt"
            },
            {
              "name": "https://www.oracle.com/security-alerts/cpuoct2020.html",
              "refsource": "MISC",
              "tags": [],
              "url": "https://www.oracle.com/security-alerts/cpuoct2020.html"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 5.0,
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
            "version": "2.0"
          },
          "exploitabilityScore": 10.0,
          "impactScore": 2.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "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"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2023-08-16T14:17Z",
      "publishedDate": "2019-06-19T00:15Z"
    }
  }
}


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