Some HTTP/2 implementations are vulnerable to resource loops, potentially leading to a denial of service. The attacker creates multiple request streams and continually shuffles the priority of the streams in a way that causes substantial churn to the priority tree. This can consume excess CPU.
CVSS Details
- CVSS 3.1 Base Score: 7.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
- CVSS 3.0 Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | alma-upgrade-nginxalma-upgrade-nginx-all-modulesalma-upgrade-nginx-filesystemalma-upgrade-nginx-mod-http-image-filteralma-upgrade-nginx-mod-http-perlalma-upgrade-nginx-mod-http-xslt-filteralma-upgrade-nginx-mod-mailalma-upgrade-nginx-mod-streamalma-upgrade-nodejs-nodemonalma-upgrade-nodejs-packaging | May 4, 2022 | Aug 13, 2019 | |
| Alpine Linux | alpine-linux-upgrade-nghttp2alpine-linux-upgrade-nginxalpine-linux-upgrade-nodejs | Nov 8, 2019 | Aug 13, 2019 | |
| Amazon Linux Ami 2 | amazon-linux-ami-2-upgrade-libnghttp2amazon-linux-ami-2-upgrade-libnghttp2-develamazon-linux-ami-2-upgrade-nghttp2amazon-linux-ami-2-upgrade-nghttp2-debuginfo | Apr 27, 2020 | Aug 13, 2019 | |
| Amazon_linux | — | amazon-linux-upgrade-nghttp2amazon-linux-upgrade-nginx | Oct 4, 2019 | Aug 13, 2019 |
| Arch Linux | View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗View advisory ↗ | arch-linux-upgrade-latest | Jul 11, 2025 | Aug 13, 2019 |
| Centos_linux | — | centos-upgrade-libnghttp2centos-upgrade-libnghttp2-debuginfocentos-upgrade-nghttp2-debuginfocentos-upgrade-nghttp2-debugsourcecentos-upgrade-nginxcentos-upgrade-nginx-all-modulescentos-upgrade-nginx-debuginfocentos-upgrade-nginx-debugsourcecentos-upgrade-nginx-filesystemcentos-upgrade-nginx-mod-http-image-filtercentos-upgrade-nginx-mod-http-image-filter-debuginfocentos-upgrade-nginx-mod-http-perlcentos-upgrade-nginx-mod-http-perl-debuginfocentos-upgrade-nginx-mod-http-xslt-filtercentos-upgrade-nginx-mod-http-xslt-filter-debuginfocentos-upgrade-nginx-mod-mailcentos-upgrade-nginx-mod-mail-debuginfocentos-upgrade-nginx-mod-streamcentos-upgrade-nginx-mod-stream-debuginfocentos-upgrade-nodejscentos-upgrade-nodejs-debuginfocentos-upgrade-nodejs-debugsourcecentos-upgrade-nodejs-develcentos-upgrade-nodejs-devel-debuginfocentos-upgrade-nodejs-docscentos-upgrade-nodejs-nodemoncentos-upgrade-nodejs-packagingcentos-upgrade-npm | Sep 11, 2019 | Aug 13, 2019 |
| Debian | debian-upgrade-nghttp2debian-upgrade-nginxdebian-upgrade-nodejs | Aug 26, 2019 | Aug 13, 2019 | |
| Freebsd | freebsd-upgrade-package-nodefreebsd-upgrade-package-node10freebsd-upgrade-package-node8freebsd-upgrade-package-libnghttp2freebsd-upgrade-package-nghttp2freebsd-upgrade-package-nginxfreebsd-upgrade-package-nginx-devel | Aug 21, 2019 | Aug 21, 2019 | |
| Huawei Euleros 2_0_sp2 | huawei-euleros-2_0_sp2-upgrade-nginx | Nov 3, 2020 | Aug 13, 2019 | |
| Huawei Euleros 2_0_sp3 | huawei-euleros-2_0_sp3-upgrade-nginx | Jan 20, 2021 | Aug 13, 2019 | |
| Huawei Euleros 2_0_sp8 | huawei-euleros-2_0_sp8-upgrade-nginxhuawei-euleros-2_0_sp8-upgrade-nginx-all-moduleshuawei-euleros-2_0_sp8-upgrade-nginx-filesystemhuawei-euleros-2_0_sp8-upgrade-nginx-mod-http-image-filterhuawei-euleros-2_0_sp8-upgrade-nginx-mod-http-perlhuawei-euleros-2_0_sp8-upgrade-nginx-mod-http-xslt-filterhuawei-euleros-2_0_sp8-upgrade-nginx-mod-mailhuawei-euleros-2_0_sp8-upgrade-nginx-mod-stream | Sep 30, 2019 | Aug 13, 2019 | |
| Ibm Was | ibm-was-upgrade-latest | Jan 3, 2020 | Aug 13, 2019 | |
| Msft | microsoft-windows-windows_10-1507-kb4512497microsoft-windows-windows_10-1607-kb4512517microsoft-windows-windows_10-1703-kb4512507microsoft-windows-windows_10-1709-kb4512516microsoft-windows-windows_10-1803-kb4512501microsoft-windows-windows_10-1809-kb4511553microsoft-windows-windows_10-1903-kb4512508microsoft-windows-windows_server_2016-1607-kb4512517microsoft-windows-windows_server_2019-1809-kb4511553msft-kb4512508-35cff443-e9f5-4d0a-a8fc-7fe8a39ab515 | Aug 13, 2019 | Aug 13, 2019 | |
| Nginx | nginx-nginx-upgrade-1_16_1nginx-nginx-upgrade-1_17_3 | Aug 14, 2019 | Aug 13, 2019 | |
| Oracle Solaris | oracle-solaris-11-4-upgrade-library-nghttp2-1-39-2-11-4-14-0-1-1-0oracle-solaris-11-4-upgrade-runtime-nodejs-8-16-1-11-4-15-0-1-1-0oracle-solaris-11-4-upgrade-runtime-nodejs-nodejs-8-8-16-1-11-4-15-0-1-1-0 | Oct 16, 2019 | Aug 13, 2019 | |
| Oracle_linux | — | oracle-linux-upgrade-libnghttp2oracle-linux-upgrade-libnghttp2-develoracle-linux-upgrade-nghttp2oracle-linux-upgrade-nginxoracle-linux-upgrade-nginx-all-modulesoracle-linux-upgrade-nginx-filesystemoracle-linux-upgrade-nginx-mod-http-image-filteroracle-linux-upgrade-nginx-mod-http-perloracle-linux-upgrade-nginx-mod-http-xslt-filteroracle-linux-upgrade-nginx-mod-mailoracle-linux-upgrade-nginx-mod-streamoracle-linux-upgrade-nodejsoracle-linux-upgrade-nodejs-develoracle-linux-upgrade-nodejs-docsoracle-linux-upgrade-nodejs-nodemonoracle-linux-upgrade-nodejs-packagingoracle-linux-upgrade-npm | Jul 21, 2020 | Aug 13, 2019 |
| Redhat_linux | redhat-upgrade-libnghttp2redhat-upgrade-libnghttp2-debuginforedhat-upgrade-libnghttp2-develredhat-upgrade-nghttp2redhat-upgrade-nghttp2-debuginforedhat-upgrade-nghttp2-debugsourceredhat-upgrade-nginxredhat-upgrade-nginx-all-modulesredhat-upgrade-nginx-debuginforedhat-upgrade-nginx-debugsourceredhat-upgrade-nginx-filesystemredhat-upgrade-nginx-mod-http-image-filterredhat-upgrade-nginx-mod-http-image-filter-debuginforedhat-upgrade-nginx-mod-http-perlredhat-upgrade-nginx-mod-http-perl-debuginforedhat-upgrade-nginx-mod-http-xslt-filterredhat-upgrade-nginx-mod-http-xslt-filter-debuginforedhat-upgrade-nginx-mod-mailredhat-upgrade-nginx-mod-mail-debuginforedhat-upgrade-nginx-mod-streamredhat-upgrade-nginx-mod-stream-debuginforedhat-upgrade-nodejsredhat-upgrade-nodejs-debuginforedhat-upgrade-nodejs-debugsourceredhat-upgrade-nodejs-develredhat-upgrade-nodejs-devel-debuginforedhat-upgrade-nodejs-docsredhat-upgrade-nodejs-nodemonredhat-upgrade-nodejs-packagingredhat-upgrade-npm | Sep 11, 2019 | Aug 13, 2019 | |
| Rocky_linux | rocky-upgrade-nginxrocky-upgrade-nginx-debuginforocky-upgrade-nginx-debugsourcerocky-upgrade-nginx-mod-http-image-filterrocky-upgrade-nginx-mod-http-image-filter-debuginforocky-upgrade-nginx-mod-http-perlrocky-upgrade-nginx-mod-http-perl-debuginforocky-upgrade-nginx-mod-http-xslt-filterrocky-upgrade-nginx-mod-http-xslt-filter-debuginforocky-upgrade-nginx-mod-mailrocky-upgrade-nginx-mod-mail-debuginforocky-upgrade-nginx-mod-streamrocky-upgrade-nginx-mod-stream-debuginfo | Mar 12, 2024 | Aug 13, 2019 | |
| Suse | — | suse-upgrade-firefox-atk-langsuse-upgrade-firefox-gdk-pixbuf-langsuse-upgrade-firefox-gdk-pixbuf-query-loaderssuse-upgrade-firefox-gdk-pixbuf-thumbnailersuse-upgrade-firefox-gio-branding-upstreamsuse-upgrade-firefox-glib2-langsuse-upgrade-firefox-glib2-toolssuse-upgrade-firefox-gtk3-branding-upstreamsuse-upgrade-firefox-gtk3-datasuse-upgrade-firefox-gtk3-immodule-amharicsuse-upgrade-firefox-gtk3-immodule-inuktitutsuse-upgrade-firefox-gtk3-immodule-multipresssuse-upgrade-firefox-gtk3-immodule-thaisuse-upgrade-firefox-gtk3-immodule-vietnamesesuse-upgrade-firefox-gtk3-immodule-ximsuse-upgrade-firefox-gtk3-immodules-tigrignasuse-upgrade-firefox-gtk3-langsuse-upgrade-firefox-gtk3-toolssuse-upgrade-firefox-libatk-1_0-0suse-upgrade-firefox-libcairo-gobject2suse-upgrade-firefox-libcairo2suse-upgrade-firefox-libffi4suse-upgrade-firefox-libffi7suse-upgrade-firefox-libgdk_pixbuf-2_0-0suse-upgrade-firefox-libgtk-3-0suse-upgrade-firefox-libharfbuzz0suse-upgrade-firefox-libpango-1_0-0suse-upgrade-libfirefox-gio-2_0-0suse-upgrade-libfirefox-glib-2_0-0suse-upgrade-libfirefox-gmodule-2_0-0suse-upgrade-libfirefox-gobject-2_0-0suse-upgrade-libfirefox-gthread-2_0-0suse-upgrade-libfreebl3suse-upgrade-libfreebl3-32bitsuse-upgrade-libnghttp2-14suse-upgrade-libnghttp2-14-32bitsuse-upgrade-libnghttp2-develsuse-upgrade-libnghttp2_asio-develsuse-upgrade-libnghttp2_asio1suse-upgrade-libnghttp2_asio1-32bitsuse-upgrade-libsoftokn3suse-upgrade-libsoftokn3-32bitsuse-upgrade-mozilla-nsprsuse-upgrade-mozilla-nspr-32bitsuse-upgrade-mozilla-nspr-develsuse-upgrade-mozilla-nsssuse-upgrade-mozilla-nss-32bitsuse-upgrade-mozilla-nss-certssuse-upgrade-mozilla-nss-certs-32bitsuse-upgrade-mozilla-nss-develsuse-upgrade-mozilla-nss-toolssuse-upgrade-mozillafirefoxsuse-upgrade-mozillafirefox-branding-sledsuse-upgrade-mozillafirefox-translations-commonsuse-upgrade-mozillafirefox-translations-othersuse-upgrade-nghttp2suse-upgrade-nginxsuse-upgrade-nginx-sourcesuse-upgrade-nodejs10suse-upgrade-nodejs10-develsuse-upgrade-nodejs10-docssuse-upgrade-nodejs12suse-upgrade-nodejs12-develsuse-upgrade-nodejs12-docssuse-upgrade-nodejs8suse-upgrade-nodejs8-develsuse-upgrade-nodejs8-docssuse-upgrade-npm10suse-upgrade-npm12suse-upgrade-npm8suse-upgrade-python3-nghttp2suse-upgrade-vim-plugin-nginx | Sep 11, 2019 | Aug 13, 2019 |
| Ubuntu | ubuntu-pro-upgrade-libnghttp2-14ubuntu-pro-upgrade-nghttp2ubuntu-pro-upgrade-nghttp2-clientubuntu-pro-upgrade-nghttp2-proxyubuntu-pro-upgrade-nghttp2-serverubuntu-upgrade-libnghttp2-14ubuntu-upgrade-nghttp2ubuntu-upgrade-nghttp2-clientubuntu-upgrade-nghttp2-proxyubuntu-upgrade-nghttp2-serverubuntu-upgrade-nginx-commonubuntu-upgrade-nginx-coreubuntu-upgrade-nginx-extrasubuntu-upgrade-nginx-fullubuntu-upgrade-nginx-light | Aug 16, 2019 | Aug 13, 2019 | |
| Vmware Photon_os | vmware-photon_os_update_tdnf | Jan 20, 2025 | Aug 13, 2019 |
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