synced 6 MIN AGO
01 Record

CVE-2019-9511

Some HTTP/2 implementations are vulnerable to window size manipulation and stream prioritization manipulation, potentially leading to a denial of service

HighPUBLISHEDCNA: certcc
CNA base score7.5 CVSS v3.xCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
View raw JSON

02 Description

Some HTTP/2 implementations are vulnerable to window size manipulation and stream prioritization manipulation, potentially leading to a denial of service

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
59.54% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 99.0% of scored records. A rank, not a probability.
NVD base score
7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2019-08-13 20:50Z7 YR AGO
Last updated
2024-08-04 21:54Z2 YR AGO
Reserved
2019-03-01
Assigning CNA
certcc
Record state
PUBLISHED
Severity
High (CVSS 7.5)
CNA CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
  • CWE-400Uncontrolled Resource ConsumptionClass
  • CWE-770Allocation of Resources Without Limits or ThrottlingBase
Data version
5.1
Document digest
57271c1ffb74f4841d16c858d731340c9a40e63de246ac757adf76d361be2101

05 Affected products

VendorProductVersionsPlatforms
apachetraffic_serverNot specified—
applemac_os_xNot specified—
appleswiftnioNot specified—
canonicalubuntu_linuxNot specified—
debiandebian_linuxNot specified—
f5nginxNot specified—
fedoraprojectfedoraNot specified—
mcafeeweb_gatewayNot specified—
nodejsnode.jsNot specified—
opensuseleapNot specified—
oracleenterprise_communications_brokerNot specified—
oraclegraalvmNot specified—
redhatamq_brokerNot specified—
redhatansible_towerNot specified—
redhatcloudforms_managementengineNot specified—
redhatenterprise_linuxNot specified—
redhatjboss_core_servicesNot specified—
redhatjboss_data_gridNot specified—
redhatjboss_enterprise_application_platformNot specified—
redhatjboss_enterprise_application_platform_cdNot specified—
redhatjboss_enterprise_application_platform_eusNot specified—
redhatjboss_enterprise_bpms_platformNot specified—
redhatjboss_enterprise_web_serverNot specified—
redhatjboss_fuseNot specified—
redhatopenshiftNot specified—
redhatopenshift_application_runtimesNot specified—
redhatopenshift_service_meshNot specified—
redhatquayNot specified—
redhatred_hat_3scale_ampNot specified—
redhatred_hat_single_sign_onNot specified—
redhatrhel_software_collectionsNot specified—
redhatservice_meshNot specified—
redhatsoftware_collectionsNot specified—
synologydiskstation_managerNot specified—
synologyskynasNot specified—
synologyvs960hdNot specified—
synologyvs960hd_firmwareNot specified—

06 References

07 Fixed in

AlmaLinux 8

  • nginx
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:1.14.1-9.module_el8.3.0+2165+af250afe.alma
    • Affected before 1:1.14.1-9.module_el8.4.0+2221+af250afe.alma
    • Affected before 1:1.14.1-9.module_el8.5.0+34+dc1cfba5.alma
  • nginx-all-modules
    Fixed in 1:1.14.1-9.module_el8.3.0+2165+af250afe.alma
  • nginx-filesystem
    Fixed in 1:1.14.1-9.module_el8.3.0+2165+af250afe.alma
  • nginx-mod-http-image-filter
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:1.14.1-9.module_el8.3.0+2165+af250afe.alma
    • Affected before 1:1.14.1-9.module_el8.4.0+2221+af250afe.alma
    • Affected before 1:1.14.1-9.module_el8.5.0+34+dc1cfba5.alma
  • nginx-mod-http-perl
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:1.14.1-9.module_el8.3.0+2165+af250afe.alma
    • Affected before 1:1.14.1-9.module_el8.4.0+2221+af250afe.alma
    • Affected before 1:1.14.1-9.module_el8.5.0+34+dc1cfba5.alma
  • nginx-mod-http-xslt-filter
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:1.14.1-9.module_el8.3.0+2165+af250afe.alma
    • Affected before 1:1.14.1-9.module_el8.4.0+2221+af250afe.alma
    • Affected before 1:1.14.1-9.module_el8.5.0+34+dc1cfba5.alma
  • nginx-mod-mail
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:1.14.1-9.module_el8.3.0+2165+af250afe.alma
    • Affected before 1:1.14.1-9.module_el8.4.0+2221+af250afe.alma
    • Affected before 1:1.14.1-9.module_el8.5.0+34+dc1cfba5.alma
  • nginx-mod-stream
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:1.14.1-9.module_el8.3.0+2165+af250afe.alma
    • Affected before 1:1.14.1-9.module_el8.4.0+2221+af250afe.alma
    • Affected before 1:1.14.1-9.module_el8.5.0+34+dc1cfba5.alma
  • nodejs-nodemon
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1.18.3-1.module_el8.3.0+2023+d2377ea3
    • Affected before 1.18.3-1.module_el8.3.0+2047+b07ac28e
  • nodejs-packaging
    Fixed

    A version is affected if any line below covers it.

    • Affected before 17-3.module_el8.3.0+2023+d2377ea3
    • Affected before 17-3.module_el8.4.0+2224+b07ac28e
    • Affected before 17-3.module_el8.4.0+2521+c668cc9f

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

Arch Linux

  • libnghttp2
    Fixed in 1.39.2-1
  • nginx
    Fixed in 1.16.1-1
  • nginx-mainline
    Fixed in 1.17.3-1

Source: Arch Linux Security Tracker, the Arch Linux security team. Reformatted by exploit.cc.

CloudLinux 8

  • nginx
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:1.14.1-9.module_el8.3.0+2165+af250afe.alma
    • Affected before 1:1.14.1-9.module_el8.4.0+2221+af250afe.alma
    • Affected before 1:1.14.1-9.module_el8.5.0+34+dc1cfba5.alma
  • nginx-all-modules
    Fixed in 1:1.14.1-9.module_el8.3.0+2165+af250afe.alma
  • nginx-filesystem
    Fixed in 1:1.14.1-9.module_el8.3.0+2165+af250afe.alma
  • nginx-mod-http-image-filter
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:1.14.1-9.module_el8.3.0+2165+af250afe.alma
    • Affected before 1:1.14.1-9.module_el8.4.0+2221+af250afe.alma
    • Affected before 1:1.14.1-9.module_el8.5.0+34+dc1cfba5.alma
  • nginx-mod-http-perl
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:1.14.1-9.module_el8.3.0+2165+af250afe.alma
    • Affected before 1:1.14.1-9.module_el8.4.0+2221+af250afe.alma
    • Affected before 1:1.14.1-9.module_el8.5.0+34+dc1cfba5.alma
  • nginx-mod-http-xslt-filter
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:1.14.1-9.module_el8.3.0+2165+af250afe.alma
    • Affected before 1:1.14.1-9.module_el8.4.0+2221+af250afe.alma
    • Affected before 1:1.14.1-9.module_el8.5.0+34+dc1cfba5.alma
  • nginx-mod-mail
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:1.14.1-9.module_el8.3.0+2165+af250afe.alma
    • Affected before 1:1.14.1-9.module_el8.4.0+2221+af250afe.alma
    • Affected before 1:1.14.1-9.module_el8.5.0+34+dc1cfba5.alma
  • nginx-mod-stream
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:1.14.1-9.module_el8.3.0+2165+af250afe.alma
    • Affected before 1:1.14.1-9.module_el8.4.0+2221+af250afe.alma
    • Affected before 1:1.14.1-9.module_el8.5.0+34+dc1cfba5.alma
  • nodejs-nodemon
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1.18.3-1.module_el8.3.0+2023+d2377ea3
    • Affected before 1.18.3-1.module_el8.3.0+2047+b07ac28e
  • nodejs-packaging
    Fixed

    A version is affected if any line below covers it.

    • Affected before 17-3.module_el8.3.0+2023+d2377ea3
    • Affected before 17-3.module_el8.4.0+2224+b07ac28e
    • Affected before 17-3.module_el8.4.0+2521+c668cc9f

Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

Debian 12

  • nghttp2
    Fixed in 1.39.2-1
  • nginx
    Fixed in 1.14.2-3
  • nodejs
    Fixed in 10.16.3~dfsg-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • nghttp2
    Fixed in 1.39.2-1
  • nginx
    Fixed in 1.14.2-3
  • nodejs
    Fixed in 10.16.3~dfsg-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • nghttp2
    Fixed in 1.39.2-1
  • nginx
    Fixed in 1.14.2-3
  • nodejs
    Fixed in 10.16.3~dfsg-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 16.04 LTS

  • nginx
    Fixed in 1.10.3-0ubuntu0.16.04.4

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 18.04 LTS

  • nginx
    Fixed in 1.14.0-0ubuntu1.4

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 14.04 LTS

  • nodejs
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 16.04 LTS

  • nghttp2
    Fixed in 1.7.1-1ubuntu0.1~esm2
    Available with Ubuntu Pro: https://ubuntu.com/pro
  • nodejs
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 18.04 LTS

  • nghttp2
    Fixed in 1.30.0-1ubuntu1+esm2
    Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
  • nodejs
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.