ubuntu-cve-2019-9511
Vulnerability from osv_ubuntu
Published
2019-08-13 00:00
Modified
2026-04-22 07:38
Summary
Details

Some HTTP/2 implementations are vulnerable to window size manipulation and stream prioritization manipulation, potentially leading to a denial of service. The attacker requests a large amount of data from a specified resource over multiple streams. They manipulate window size and stream priority to force the server to queue the data in 1-byte chunks. Depending on how efficiently this data is queued, this can consume excess CPU, memory, or both.

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:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "nodejs",
            "binary_version": "0.10.25~dfsg2-2ubuntu1.2+esm2"
          },
          {
            "binary_name": "nodejs-legacy",
            "binary_version": "0.10.25~dfsg2-2ubuntu1.2+esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "nodejs",
        "purl": "pkg:deb/ubuntu/nodejs@0.10.25~dfsg2-2ubuntu1.2+esm2?arch=source\u0026distro=esm-infra-legacy/trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.10.15~dfsg1-4",
        "0.10.21~dfsg1-1",
        "0.10.22~dfsg1-2",
        "0.10.23~dfsg1-1",
        "0.10.23~dfsg1-2",
        "0.10.23~dfsg1-3",
        "0.10.24~dfsg1-1",
        "0.10.25~dfsg2-2",
        "0.10.25~dfsg2-2ubuntu1",
        "0.10.25~dfsg2-2ubuntu1.2",
        "0.10.25~dfsg2-2ubuntu1.2+esm1",
        "0.10.25~dfsg2-2ubuntu1.2+esm2"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "nginx",
            "binary_version": "1.10.3-0ubuntu0.16.04.4"
          },
          {
            "binary_name": "nginx-common",
            "binary_version": "1.10.3-0ubuntu0.16.04.4"
          },
          {
            "binary_name": "nginx-core",
            "binary_version": "1.10.3-0ubuntu0.16.04.4"
          },
          {
            "binary_name": "nginx-extras",
            "binary_version": "1.10.3-0ubuntu0.16.04.4"
          },
          {
            "binary_name": "nginx-full",
            "binary_version": "1.10.3-0ubuntu0.16.04.4"
          },
          {
            "binary_name": "nginx-light",
            "binary_version": "1.10.3-0ubuntu0.16.04.4"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "nginx",
        "purl": "pkg:deb/ubuntu/nginx@1.10.3-0ubuntu0.16.04.4?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.10.3-0ubuntu0.16.04.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.9.3-1ubuntu1",
        "1.9.6-2ubuntu1",
        "1.9.6-2ubuntu2",
        "1.9.9-0ubuntu1",
        "1.9.9-1ubuntu1",
        "1.9.10-0ubuntu1",
        "1.9.10-1ubuntu1",
        "1.9.11-0ubuntu1",
        "1.9.11-0ubuntu2",
        "1.9.12-0ubuntu1",
        "1.9.13-0ubuntu1",
        "1.9.14-0ubuntu1",
        "1.9.15-0ubuntu1",
        "1.10.0-0ubuntu0.16.04.1",
        "1.10.0-0ubuntu0.16.04.2",
        "1.10.0-0ubuntu0.16.04.3",
        "1.10.0-0ubuntu0.16.04.4",
        "1.10.3-0ubuntu0.16.04.1",
        "1.10.3-0ubuntu0.16.04.2",
        "1.10.3-0ubuntu0.16.04.3"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libnghttp2-14",
            "binary_version": "1.7.1-1ubuntu0.1~esm2"
          },
          {
            "binary_name": "nghttp2",
            "binary_version": "1.7.1-1ubuntu0.1~esm2"
          },
          {
            "binary_name": "nghttp2-client",
            "binary_version": "1.7.1-1ubuntu0.1~esm2"
          },
          {
            "binary_name": "nghttp2-proxy",
            "binary_version": "1.7.1-1ubuntu0.1~esm2"
          },
          {
            "binary_name": "nghttp2-server",
            "binary_version": "1.7.1-1ubuntu0.1~esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "nghttp2",
        "purl": "pkg:deb/ubuntu/nghttp2@1.7.1-1ubuntu0.1~esm2?arch=source\u0026distro=esm-apps/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.7.1-1ubuntu0.1~esm2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.6.7-1",
        "1.3.4-2",
        "1.4.0-1",
        "1.4.0-2",
        "1.5.0-2",
        "1.6.0-1",
        "1.7.0-1",
        "1.7.1-1",
        "1.7.1-1ubuntu0.1~esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "nodejs",
            "binary_version": "4.2.6~dfsg-1ubuntu4.2+esm3"
          },
          {
            "binary_name": "nodejs-legacy",
            "binary_version": "4.2.6~dfsg-1ubuntu4.2+esm3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "nodejs",
        "purl": "pkg:deb/ubuntu/nodejs@4.2.6~dfsg-1ubuntu4.2+esm3?arch=source\u0026distro=esm-apps/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.10.25~dfsg2-2ubuntu1",
        "4.2.2~dfsg-1",
        "4.2.3~dfsg-1",
        "4.2.4~dfsg-1ubuntu1",
        "4.2.4~dfsg-2",
        "4.2.6~dfsg-1ubuntu1",
        "4.2.6~dfsg-1ubuntu4",
        "4.2.6~dfsg-1ubuntu4.1",
        "4.2.6~dfsg-1ubuntu4.2",
        "4.2.6~dfsg-1ubuntu4.2+esm1",
        "4.2.6~dfsg-1ubuntu4.2+esm2",
        "4.2.6~dfsg-1ubuntu4.2+esm3"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libnginx-mod-http-auth-pam",
            "binary_version": "1.14.0-0ubuntu1.4"
          },
          {
            "binary_name": "libnginx-mod-http-cache-purge",
            "binary_version": "1.14.0-0ubuntu1.4"
          },
          {
            "binary_name": "libnginx-mod-http-dav-ext",
            "binary_version": "1.14.0-0ubuntu1.4"
          },
          {
            "binary_name": "libnginx-mod-http-echo",
            "binary_version": "1.14.0-0ubuntu1.4"
          },
          {
            "binary_name": "libnginx-mod-http-fancyindex",
            "binary_version": "1.14.0-0ubuntu1.4"
          },
          {
            "binary_name": "libnginx-mod-http-geoip",
            "binary_version": "1.14.0-0ubuntu1.4"
          },
          {
            "binary_name": "libnginx-mod-http-headers-more-filter",
            "binary_version": "1.14.0-0ubuntu1.4"
          },
          {
            "binary_name": "libnginx-mod-http-image-filter",
            "binary_version": "1.14.0-0ubuntu1.4"
          },
          {
            "binary_name": "libnginx-mod-http-lua",
            "binary_version": "1.14.0-0ubuntu1.4"
          },
          {
            "binary_name": "libnginx-mod-http-ndk",
            "binary_version": "1.14.0-0ubuntu1.4"
          },
          {
            "binary_name": "libnginx-mod-http-perl",
            "binary_version": "1.14.0-0ubuntu1.4"
          },
          {
            "binary_name": "libnginx-mod-http-subs-filter",
            "binary_version": "1.14.0-0ubuntu1.4"
          },
          {
            "binary_name": "libnginx-mod-http-uploadprogress",
            "binary_version": "1.14.0-0ubuntu1.4"
          },
          {
            "binary_name": "libnginx-mod-http-upstream-fair",
            "binary_version": "1.14.0-0ubuntu1.4"
          },
          {
            "binary_name": "libnginx-mod-http-xslt-filter",
            "binary_version": "1.14.0-0ubuntu1.4"
          },
          {
            "binary_name": "libnginx-mod-mail",
            "binary_version": "1.14.0-0ubuntu1.4"
          },
          {
            "binary_name": "libnginx-mod-nchan",
            "binary_version": "1.14.0-0ubuntu1.4"
          },
          {
            "binary_name": "libnginx-mod-rtmp",
            "binary_version": "1.14.0-0ubuntu1.4"
          },
          {
            "binary_name": "libnginx-mod-stream",
            "binary_version": "1.14.0-0ubuntu1.4"
          },
          {
            "binary_name": "nginx",
            "binary_version": "1.14.0-0ubuntu1.4"
          },
          {
            "binary_name": "nginx-common",
            "binary_version": "1.14.0-0ubuntu1.4"
          },
          {
            "binary_name": "nginx-core",
            "binary_version": "1.14.0-0ubuntu1.4"
          },
          {
            "binary_name": "nginx-extras",
            "binary_version": "1.14.0-0ubuntu1.4"
          },
          {
            "binary_name": "nginx-full",
            "binary_version": "1.14.0-0ubuntu1.4"
          },
          {
            "binary_name": "nginx-light",
            "binary_version": "1.14.0-0ubuntu1.4"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "nginx",
        "purl": "pkg:deb/ubuntu/nginx@1.14.0-0ubuntu1.4?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.14.0-0ubuntu1.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.12.1-0ubuntu2",
        "1.13.6-2ubuntu1",
        "1.13.6-2ubuntu2",
        "1.13.10-1ubuntu1",
        "1.13.12-0ubuntu1",
        "1.14.0-0ubuntu1",
        "1.14.0-0ubuntu1.1",
        "1.14.0-0ubuntu1.2",
        "1.14.0-0ubuntu1.3"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libnghttp2-14",
            "binary_version": "1.30.0-1ubuntu1+esm2"
          },
          {
            "binary_name": "nghttp2",
            "binary_version": "1.30.0-1ubuntu1+esm2"
          },
          {
            "binary_name": "nghttp2-client",
            "binary_version": "1.30.0-1ubuntu1+esm2"
          },
          {
            "binary_name": "nghttp2-proxy",
            "binary_version": "1.30.0-1ubuntu1+esm2"
          },
          {
            "binary_name": "nghttp2-server",
            "binary_version": "1.30.0-1ubuntu1+esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "nghttp2",
        "purl": "pkg:deb/ubuntu/nghttp2@1.30.0-1ubuntu1+esm2?arch=source\u0026distro=esm-infra/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.30.0-1ubuntu1+esm2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.25.0-1",
        "1.27.0-1",
        "1.28.0-1",
        "1.29.0-1",
        "1.29.0-1build1",
        "1.30.0-1",
        "1.30.0-1ubuntu1",
        "1.30.0-1ubuntu1+esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "nodejs",
            "binary_version": "8.10.0~dfsg-2ubuntu0.4+esm6"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "nodejs",
        "purl": "pkg:deb/ubuntu/nodejs@8.10.0~dfsg-2ubuntu0.4+esm6?arch=source\u0026distro=esm-apps/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "6.11.4~dfsg-1ubuntu1",
        "6.11.4~dfsg-1ubuntu2",
        "6.12.0~dfsg-1ubuntu1",
        "6.12.0~dfsg-2ubuntu1",
        "6.12.0~dfsg-2ubuntu2",
        "8.10.0~dfsg-2",
        "8.10.0~dfsg-2ubuntu0.2",
        "8.10.0~dfsg-2ubuntu0.3",
        "8.10.0~dfsg-2ubuntu0.4",
        "8.10.0~dfsg-2ubuntu0.4+esm1",
        "8.10.0~dfsg-2ubuntu0.4+esm2",
        "8.10.0~dfsg-2ubuntu0.4+esm3",
        "8.10.0~dfsg-2ubuntu0.4+esm4",
        "8.10.0~dfsg-2ubuntu0.4+esm5",
        "8.10.0~dfsg-2ubuntu0.4+esm6"
      ]
    }
  ],
  "aliases": [],
  "details": "Some HTTP/2 implementations are vulnerable to window size manipulation and stream prioritization manipulation, potentially leading to a denial of service. The attacker requests a large amount of data from a specified resource over multiple streams. They manipulate window size and stream priority to force the server to queue the data in 1-byte chunks. Depending on how efficiently this data is queued, this can consume excess CPU, memory, or both.",
  "id": "UBUNTU-CVE-2019-9511",
  "modified": "2026-04-22T07:38:56Z",
  "published": "2019-08-13T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2019-9511"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-002.md"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4099-1"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/nodejs/node/pull/29133"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/nodejs/node/pull/29148"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/nodejs/node/pull/29152"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2019-9511"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-6754-1"
    }
  ],
  "related": [
    "USN-4099-1",
    "USN-6754-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2019-9511"
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.