CVE-2019-9516

Advisory lineage Upstream: 0 Downstream: 29
Modified
Published: 13 Aug 2019, 20:50
Last modified:04 Aug 2024, 21:54

Vulnerability Summary

Overall Risk (default)
medium
30/100
CVSS Score
7.5 HIGH
v3.0 (cve.org)
EPSS Score
2.13% LOW
2% probability -0.26%
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 header leak, potentially leading to a denial of service. The attacker sends a stream of headers with a 0-length header name and 0-length header value, optionally Huffman encoded into 1-byte or greater headers. Some implementations allocate memory for these headers and keep the allocation alive until the session dies. This can consume excess memory.

CVSS Metrics

  • v3.1•MEDIUM•Score: 6.5CVSS:3.1/AV:N/AC:L/PR:L/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•MEDIUM•Score: 6.8AV:N/AC:L/Au:S/C:N/I:N/A:C

EPSS Trends

Current EPSS score: 2.13%• Percentile: 84%

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•nginx

    ≥ 1.9.5, < 1.16.1 | ≥ 1.17.0, ≤ 1.17.2

  • fedoraproject•fedora

    30 | 29 | 32

  • 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, < 8.16.1 | ≥ 10.0.0, < 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 (37)