CVE-2019-9515

Advisory lineage Upstream: 0 Downstream: 26
Modified
Published: 13 Aug 2019, 20:50
Last modified:04 Aug 2024, 21:54

Vulnerability Summary

Overall Risk (default)
medium
33/100
CVSS Score
7.8 HIGH
v2.0 (nvd)
EPSS Score
8.89% LOW
9% probability -1.50%
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 settings flood, potentially leading to a denial of service. The attacker sends a stream of SETTINGS frames to the peer. Since the RFC requires that the peer reply with one acknowledgement per SETTINGS frame, an empty SETTINGS frame is almost equivalent in behavior to a ping. Depending on how efficiently this data is queued, this can consume excess CPU, memory, or both.

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: 8.89%• Percentile: 93%

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

  • f5•big-ip_local_traffic_manager

    ≥ 11.6.1, < 11.6.5.1 | ≥ 12.1.0, < 12.1.5.1 | ≥ 13.1.0, < 13.1.3.2 | ≥ 14.0.0, < 14.0.1.1 | ≥ 14.1.0, < 14.1.2.1 | ≥ 15.0.0, < 15.0.1.1

  • 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_container_platform

    4.1

  • redhat•openshift_service_mesh

    1.0

  • redhat•openstack

    14

  • redhat•quay

    3.0.0

  • redhat•single_sign-on

    7.3

  • redhat•software_collections

    1.0

  • synology•diskstation_manager

    6.2

  • synology•skynas

    na

  • synology•vs960hd_firmware

    na

References (38)