ubuntu-cve-2019-9512
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 ping floods, potentially leading to a denial of service. The attacker sends continual pings to an HTTP/2 peer, causing the peer to build an internal queue of responses. Depending on how efficiently this data is queued, this can consume excess CPU, memory, 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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        "18.9.0-6",
        "18.9.0-6build1"
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    }
  ],
  "aliases": [],
  "details": "Some HTTP/2 implementations are vulnerable to ping floods, potentially leading to a denial of service. The attacker sends continual pings to an HTTP/2 peer, causing the peer to build an internal queue of responses. Depending on how efficiently this data is queued, this can consume excess CPU, memory, or both.",
  "id": "UBUNTU-CVE-2019-9512",
  "modified": "2026-04-22T07:38:56Z",
  "published": "2019-08-13T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2019-9512"
    },
    {
      "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://www.cve.org/CVERecord?id=CVE-2019-9512"
    }
  ],
  "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-2019-9512"
  ]
}



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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.