ubuntu-cve-2019-9514
Vulnerability from osv_ubuntu
Published
2019-08-13 00:00
Modified
2026-05-20 14:51
Summary
Details

Some HTTP/2 implementations are vulnerable to a reset flood, potentially leading to a denial of service. The attacker opens a number of streams and sends an invalid request over each stream that should solicit a stream of RST_STREAM frames from the peer. Depending on how the peer queues the RST_STREAM frames, this can consume excess memory, CPU, or both.

Severity
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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
N/A (UNKNOWN)
medium
References
To clipboard 

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  ],
  "aliases": [],
  "details": "Some HTTP/2 implementations are vulnerable to a reset flood, potentially leading to a denial of service. The attacker opens a number of streams and sends an invalid request over each stream that should solicit a stream of RST_STREAM frames from the peer. Depending on how the peer queues the RST_STREAM frames, this can consume excess memory, CPU, or both.",
  "id": "UBUNTU-CVE-2019-9514",
  "modified": "2026-05-20T14:51:14Z",
  "published": "2019-08-13T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2019-9514"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-002.md"
    },
    {
      "type": "REPORT",
      "url": "https://netty.io/news/2019/08/13/4-1-39-Final.html"
    },
    {
      "type": "REPORT",
      "url": "http://blog.kazuhooku.com/2019/08/h2o-version-226-230-beta2-released.html"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/netty/netty/pull/9460"
    },
    {
      "type": "REPORT",
      "url": "https://labs.twistedmatrix.com/2019/11/twisted-19100-released.html"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4308-1"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4866-1"
    },
    {
      "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-2019-9514"
    }
  ],
  "related": [
    "USN-4308-1",
    "USN-4866-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "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:3.1/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-2019-9514"
  ]
}



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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.