ghsa-99cq-xr7g-h22w
Vulnerability from github
Published
2022-05-24 16:48
Modified
2023-08-16 15:30
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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.

Show details on source website

To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2019-11479"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-405",
      "CWE-770"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2019-06-19T00:15:00Z",
    "severity": "HIGH"
  },
  "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": "GHSA-99cq-xr7g-h22w",
  "modified": "2023-08-16T15:30:16Z",
  "published": "2022-05-24T16:48:22Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-11479"
    },
    {
      "type": "WEB",
      "url": "https://www.us-cert.gov/ics/advisories/icsma-20-170-06"
    },
    {
      "type": "WEB",
      "url": "https://www.us-cert.gov/ics/advisories/icsa-19-253-03"
    },
    {
      "type": "WEB",
      "url": "https://www.synology.com/security/advisory/Synology_SA_19_28"
    },
    {
      "type": "WEB",
      "url": "https://www.oracle.com/security-alerts/cpuoct2020.html"
    },
    {
      "type": "WEB",
      "url": "https://www.oracle.com/security-alerts/cpujan2020.html"
    },
    {
      "type": "WEB",
      "url": "https://www.kb.cert.org/vuls/id/905115"
    },
    {
      "type": "WEB",
      "url": "https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/SACKPanic"
    },
    {
      "type": "WEB",
      "url": "https://usn.ubuntu.com/4041-2"
    },
    {
      "type": "WEB",
      "url": "https://usn.ubuntu.com/4041-1"
    },
    {
      "type": "WEB",
      "url": "https://support.f5.com/csp/article/K35421172?utm_source=f5support\u0026amp;utm_medium=RSS"
    },
    {
      "type": "WEB",
      "url": "https://support.f5.com/csp/article/K35421172"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20190625-0001"
    },
    {
      "type": "WEB",
      "url": "https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2019-0008"
    },
    {
      "type": "WEB",
      "url": "https://kc.mcafee.com/corporate/index?page=content\u0026id=SB10287"
    },
    {
      "type": "WEB",
      "url": "https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44193"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-001.md"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git/commit/?id=967c05aee439e6e5d7d805e195b3a20ef5c433d6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git/commit/?id=5f3e2bf008c2221478101ee72f5cb4654b9fc363"
    },
    {
      "type": "WEB",
      "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-462066.pdf"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/vulnerabilities/tcpsack"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2019:1699"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2019:1602"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2019:1594"
    },
    {
      "type": "WEB",
      "url": "http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2020-010.txt"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2019/06/28/2"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2019/07/06/3"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2019/07/06/4"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/108818"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.