CVE-2019-9518

Advisory lineage Upstream: 0 Downstream: 16
Modified
Published: 13 Aug 2019, 20:50
Last modified:04 Aug 2024, 21:54

Vulnerability Summary

Overall Risk (default)
medium
32/100
CVSS Score
7.8 HIGH
v2.0 (nvd)
EPSS Score
3.58% LOW
4% probability -0.10%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

13 Aug 2019, 20:50
Published
Vulnerability first disclosed
04 Aug 2024, 21:54
Last Modified
Vulnerability information updated

Description

Some HTTP/2 implementations are vulnerable to a flood of empty frames, potentially leading to a denial of service. The attacker sends a stream of frames with an empty payload and without the end-of-stream flag. These frames can be DATA, HEADERS, CONTINUATION and/or PUSH_PROMISE. The peer spends time processing each frame disproportionate to attack bandwidth. This can consume excess CPU.

CVSS Metrics

  • v3.1•HIGH•Score: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • v3.0•HIGH•Score: 7.5CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • v2.0•HIGH•Score: 7.8AV:N/AC:L/Au:N/C:N/I:N/A:C

EPSS Trends

Current EPSS score: 3.58%• Percentile: 88%

Techniques & Countermeasures

  • CWE-770•Allocation of Resources Without Limits or Throttling

    The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.

  • CWE-400•Uncontrolled Resource Consumption

    The product does not properly control the allocation and maintenance of a limited resource.

Affected Systems

  • apache•traffic_server

    ≥ 6.0.0, ≤ 6.2.3 | ≥ 7.0.0, ≤ 7.1.6 | ≥ 8.0.0, ≤ 8.0.3

  • apple•swiftnio

    ≥ 1.0.0, ≤ 1.4.0

  • canonical•ubuntu_linux

    16.04 | 18.04 | 19.04

  • debian•debian_linux

    9.0 | 10.0

  • fedoraproject•fedora

    29 | 30

  • mcafee•web_gateway

    ≥ 7.7.2.0, < 7.7.2.24 | ≥ 7.8.2.0, < 7.8.2.13 | ≥ 8.1.0, < 8.2.0

  • nodejs•node.js

    ≥ 8.0.0, ≤ 8.8.1 | ≥ 8.9.0, < 8.16.1 | ≥ 10.0.0, ≤ 10.12.0 | ≥ 10.13.0, < 10.16.3 | ≥ 12.0.0, < 12.8.1

  • opensuse•leap

    15.0 | 15.1

  • oracle•graalvm

    19.2.0

  • redhat•enterprise_linux

    8.0

  • redhat•jboss_core_services

    1.0

  • redhat•jboss_enterprise_application_platform

    7.2.0 | 7.3.0

  • redhat•openshift_service_mesh

    1.0

  • redhat•quay

    3.0.0

  • redhat•software_collections

    1.0

  • synology•diskstation_manager

    6.2

  • synology•skynas

    na

  • synology•vs960hd_firmware

    na

References (27)