gsd-2020-11080
Vulnerability from gsd
Modified
2023-12-13 01:22
Details
In nghttp2 before version 1.41.0, the overly large HTTP/2 SETTINGS frame payload causes denial of service. The proof of concept attack involves a malicious client constructing a SETTINGS frame with a length of 14,400 bytes (2400 individual settings entries) over and over again. The attack causes the CPU to spike at 100%. nghttp2 v1.41.0 fixes this vulnerability. There is a workaround to this vulnerability. Implement nghttp2_on_frame_recv_callback callback, and if received frame is SETTINGS frame and the number of settings entries are large (e.g., > 32), then drop the connection.
Aliases
Aliases
CVE-2020-11080


To clipboard 

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    "alias": "CVE-2020-11080",
    "description": "In nghttp2 before version 1.41.0, the overly large HTTP/2 SETTINGS frame payload causes denial of service. The proof of concept attack involves a malicious client constructing a SETTINGS frame with a length of 14,400 bytes (2400 individual settings entries) over and over again. The attack causes the CPU to spike at 100%. nghttp2 v1.41.0 fixes this vulnerability. There is a workaround to this vulnerability. Implement nghttp2_on_frame_recv_callback callback, and if received frame is SETTINGS frame and the number of settings entries are large (e.g., \u003e 32), then drop the connection.",
    "id": "GSD-2020-11080",
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      "https://www.debian.org/security/2020/dsa-4696",
      "https://access.redhat.com/errata/RHSA-2020:3084",
      "https://access.redhat.com/errata/RHSA-2020:3042",
      "https://access.redhat.com/errata/RHSA-2020:2895",
      "https://access.redhat.com/errata/RHSA-2020:2852",
      "https://access.redhat.com/errata/RHSA-2020:2850",
      "https://access.redhat.com/errata/RHSA-2020:2849",
      "https://access.redhat.com/errata/RHSA-2020:2848",
      "https://access.redhat.com/errata/RHSA-2020:2847",
      "https://access.redhat.com/errata/RHSA-2020:2823",
      "https://access.redhat.com/errata/RHSA-2020:2784",
      "https://access.redhat.com/errata/RHSA-2020:2755",
      "https://access.redhat.com/errata/RHSA-2020:2646",
      "https://access.redhat.com/errata/RHSA-2020:2644",
      "https://access.redhat.com/errata/RHSA-2020:2524",
      "https://access.redhat.com/errata/RHSA-2020:2523",
      "https://advisories.mageia.org/CVE-2020-11080.html",
      "https://alas.aws.amazon.com/cve/html/CVE-2020-11080.html",
      "https://linux.oracle.com/cve/CVE-2020-11080.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
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      "id": "GSD-2020-11080",
      "modified": "2023-12-13T01:22:05.316413Z",
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            "accessVector": "NETWORK",
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      "lastModifiedDate": "2023-10-16T18:15Z",
      "publishedDate": "2020-06-03T23:15Z"
    }
  }
}


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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
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  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
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