CVE-2019-9512
HTTP/2 Server Denial of Service Vulnerability
CVE-2019-9512 is fixed in 71 products on 2 platforms, first by libnetty-java 1:4.1.7-4ubuntu0.1+esm1, released August 12, 2019. It is not reported as exploited. Patch Radar priority: High.
HighFixed on 2 platforms
CVSS
7.5
Important
Exploitation
None reported
Exploitation Less Likely
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.8343
99th percentile
<p>A denial of service vulnerability exists in the HTTP/2 protocol stack (HTTP.sys) when HTTP.sys improperly parses specially crafted HTTP/2 requests. An attacker who successfully exploited the vulnerability could create a denial of service condition, causing the target system to become unresponsive.</p> <p>To exploit this vulnerability, an unauthenticated attacker could send a specially crafted HTTP packet to a target system, causing the affected system to become nonresponsive.</p> <p>The update addresses the vulnerability by modifying how the Windows HTTP protocol stack handles HTTP/2 requests. Note that the denial of service vulnerability would not allow an attacker to execute code or to elevate user rights.</p>
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Microsoft | |||
| Windows 10 Version 1607 for 32-bit Systems | 14393.3144 | KB4512517 | Aug 13, 2019 |
| Windows 10 Version 1607 for x64-based Systems | 14393.3144 | KB4512517 | Aug 13, 2019 |
| Windows 10 Version 1703 for 32-bit Systems | 15063.1988 | KB4512507 | Aug 13, 2019 |
| Windows 10 Version 1703 for x64-based Systems | 15063.1988 | KB4512507 | Aug 13, 2019 |
| Windows 10 Version 1709 for 32-bit Systems | 16299.1331 | KB4512516 | Aug 13, 2019 |
| Windows 10 Version 1709 for ARM64-based Systems | 16299.1331 | KB4512516 | Aug 13, 2019 |
| Windows 10 Version 1709 for x64-based Systems | 16299.1331 | KB4512516 | Aug 13, 2019 |
| Windows 10 Version 1803 for 32-bit Systems | 17134.950 | KB4512501 | Aug 13, 2019 |
| Windows 10 Version 1803 for ARM64-based Systems | 17134.950 | KB4512501 | Aug 13, 2019 |
| Windows 10 Version 1803 for x64-based Systems | 17134.950 | KB4512501 | Aug 13, 2019 |
| Windows 10 Version 1809 for 32-bit Systems | 17763.678 | KB4511553 | Aug 13, 2019 |
| Windows 10 Version 1809 for ARM64-based Systems | 17763.678 | KB4511553 | Aug 13, 2019 |
| Windows 10 Version 1809 for x64-based Systems | 17763.678 | KB4511553 | Aug 13, 2019 |
| Windows 10 Version 1903 for 32-bit Systems | 18362.295 | KB4512508 | Aug 13, 2019 |
| Windows 10 Version 1903 for ARM64-based Systems | 18362.295 | KB4512508 | Aug 13, 2019 |
| Windows 10 Version 1903 for x64-based Systems | 18362.295 | KB4512508 | Aug 13, 2019 |
| Windows 10 for 32-bit Systems | 10240.18305 | KB4512497 | Aug 13, 2019 |
| Windows 10 for x64-based Systems | 10240.18305 | KB4512497 | Aug 13, 2019 |
| Windows Server 2016 | 14393.3144 | KB4512517 | Aug 13, 2019 |
| Windows Server 2016 (Server Core installation) | 14393.3144 | KB4512517 | Aug 13, 2019 |
| Windows Server 2019 | 17763.678 | KB4511553 | Aug 13, 2019 |
| Windows Server 2019 (Server Core installation) | 17763.678 | KB4511553 | Aug 13, 2019 |
| Windows Server, version 1803 (Server Core Installation) | 17134.950 | KB4512501 | Aug 13, 2019 |
| Windows Server, version 1903 (Server Core installation) | 18362.295 | KB4512508 | Aug 13, 2019 |
| Linux | |||
| buildah · RHEL 8 | 0:1.5-6.gite94b4f9.module+el8.1.0+4908+72a45cef | RHSA-2019:4273 | Dec 17, 2019 |
| buildah · ol 8 | 0:1.9.0-5.0.1.module+el8.1.0+5440+994fc847 | ELSA-2019-4269 | Jan 3, 2020 |
| buildah-tests · RHEL 8 | 0:1.9.0-5.module+el8.1.0+4240+893c1ab8 | RHSA-2019:4269 | Dec 17, 2019 |
| buildah-tests · ol 8 | 0:1.9.0-5.0.1.module+el8.1.0+5440+994fc847 | ELSA-2019-4269 | Jan 3, 2020 |
| cockpit-podman · RHEL 8 | 0:4-1.module+el8.1.0+4081+b29780af | RHSA-2019:4269 | Dec 17, 2019 |
| cockpit-podman · ol 8 | 0:4-1.module+el8.1.0+5440+994fc847 | ELSA-2019-4269 | Jan 3, 2020 |
| container-selinux · RHEL 8 | 2:2.94-1.git1e99f1d.module+el8.1.0+3468+011f0ab0 | RHSA-2019:4273 | Dec 17, 2019 |
| container-selinux · ol 8 | 2:2.123.0-2.module+el8.1.0+5460+5d763c32 | ELSA-2019-4269 | Jan 3, 2020 |
| containernetworking-plugins · RHEL 8 | 0:0.7.4-4.git9ebe139.module+el8.1.0+4908+72a45cef | RHSA-2019:4273 | Dec 17, 2019 |
| containernetworking-plugins · ol 8 | 0:0.8.1-3.0.1.module+el8.1.0+5460+5d763c32 | ELSA-2019-4269 | Jan 3, 2020 |
| containers-common · RHEL 8 | 1:0.1.32-6.git1715c90.module+el8.1.0+4903+9bde5d6c | RHSA-2019:4273 | Dec 17, 2019 |
| containers-common · ol 8 | 1:0.1.37-6.0.1.module+el8.1.0+5460+5d763c32 | ELSA-2019-4269 | Jan 3, 2020 |
| fuse-overlayfs · RHEL 8 | 0:0.3-5.module+el8.1.0+3468+011f0ab0 | RHSA-2019:4273 | Dec 17, 2019 |
| fuse-overlayfs · ol 8 | 0:0.4.1-1.module+el8.1.0+5440+994fc847 | ELSA-2019-4269 | Jan 3, 2020 |
| go-toolset · RHEL 8 | 0:1.11.13-1.module+el8.0.1+4087+d8180914 | RHSA-2019:2726 | Sep 12, 2019 |
| go-toolset · ol 8 | 0:1.11.13-1.module+el8.0.1+5334+cadcb96c | ELSA-2019-2726 | Feb 16, 2026 |
| golang · RHEL 8 | 0:1.11.13-2.module+el8.0.1+4087+d8180914 | RHSA-2019:2726 | Sep 12, 2019 |
| golang · ol 8 | 0:1.11.13-2.module+el8.0.1+5334+cadcb96c | ELSA-2019-2726 | Feb 16, 2026 |
| golang-bin · RHEL 8 | 0:1.11.13-2.module+el8.0.1+4087+d8180914 | RHSA-2019:2726 | Sep 12, 2019 |
| golang-bin · ol 8 | 0:1.11.13-2.module+el8.0.1+5334+cadcb96c | ELSA-2019-2726 | Feb 16, 2026 |
| golang-docs · RHEL 8 | 0:1.11.13-2.module+el8.0.1+4087+d8180914 | RHSA-2019:2726 | Sep 12, 2019 |
| golang-docs · ol 8 | 0:1.11.13-2.module+el8.0.1+5334+cadcb96c | ELSA-2019-2726 | Feb 16, 2026 |
| golang-misc · RHEL 8 | 0:1.11.13-2.module+el8.0.1+4087+d8180914 | RHSA-2019:2726 | Sep 12, 2019 |
| golang-misc · ol 8 | 0:1.11.13-2.module+el8.0.1+5334+cadcb96c | ELSA-2019-2726 | Feb 16, 2026 |
| golang-race · RHEL 8 | 0:1.11.13-2.module+el8.0.1+4087+d8180914 | RHSA-2019:2726 | Sep 12, 2019 |
| golang-race · ol 8 | 0:1.11.13-2.module+el8.0.1+5334+cadcb96c | ELSA-2019-2726 | Feb 16, 2026 |
| golang-src · RHEL 8 | 0:1.11.13-2.module+el8.0.1+4087+d8180914 | RHSA-2019:2726 | Sep 12, 2019 |
| golang-src · ol 8 | 0:1.11.13-2.module+el8.0.1+5334+cadcb96c | ELSA-2019-2726 | Feb 16, 2026 |
| golang-tests · RHEL 8 | 0:1.11.13-2.module+el8.0.1+4087+d8180914 | RHSA-2019:2726 | Sep 12, 2019 |
| golang-tests · ol 8 | 0:1.11.13-2.module+el8.0.1+5334+cadcb96c | ELSA-2019-2726 | Feb 16, 2026 |
| libnetty-java · Ubuntu 18.04.6 LTS (bionic) | 1:4.1.7-4ubuntu0.1+esm1 | libnetty-java 1:4.1.7-4ubuntu0.1+esm1 | Aug 12, 2019 |
| nodejs · RHEL 8 | 1:10.16.3-2.module+el8.0.0+4214+49953fda | RHSA-2019:2925 | Sep 30, 2019 |
| nodejs · ol 8 | 1:10.14.1-1.module+el8.0.0+5349+4d6b561f | ELSA-2019-2925 | Sep 30, 2019 |
| nodejs-devel · RHEL 8 | 1:10.16.3-2.module+el8.0.0+4214+49953fda | RHSA-2019:2925 | Sep 30, 2019 |
| nodejs-devel · ol 8 | 1:10.14.1-1.module+el8.0.0+5349+4d6b561f | ELSA-2019-2925 | Sep 30, 2019 |
| nodejs-docs · RHEL 8 | 1:10.16.3-2.module+el8.0.0+4214+49953fda | RHSA-2019:2925 | Sep 30, 2019 |
| nodejs-docs · ol 8 | 1:10.14.1-1.module+el8.0.0+5349+4d6b561f | ELSA-2019-2925 | Sep 30, 2019 |
| nodejs-nodemon · RHEL 8 | 0:1.18.3-1.module+el8+2632+6c5111ed | RHSA-2019:2925 | Sep 30, 2019 |
| nodejs-nodemon · ol 8 | 0:1.18.3-1.module+el8.0.0+5349+4d6b561f | ELSA-2019-2925 | Sep 30, 2019 |
| nodejs-packaging · RHEL 8 | 0:17-3.module+el8+2873+aa7dfd9a | RHSA-2019:2925 | Sep 30, 2019 |
| nodejs-packaging · ol 8 | 0:17-3.module+el8.0.0+5349+4d6b561f | ELSA-2019-2925 | Sep 30, 2019 |
| npm · RHEL 8 | 1:6.9.0-1.10.16.3.2.module+el8.0.0+4214+49953fda | RHSA-2019:2925 | Sep 30, 2019 |
| npm · ol 8 | 1:6.4.1-1.10.14.1.1.module+el8.0.0+5349+4d6b561f | ELSA-2019-2925 | Sep 30, 2019 |
| oci-systemd-hook · RHEL 8 | 1:0.1.15-2.git2d0b8a3.module+el8.1.0+3468+011f0ab0 | RHSA-2019:4273 | Dec 17, 2019 |
| oci-systemd-hook · ol 8 | 1:0.1.15-2.git2d0b8a3.module+el8.1.0+5440+994fc847 | ELSA-2019-4269 | Jan 3, 2020 |
| oci-umount · RHEL 8 | 2:2.3.4-2.git87f9237.module+el8.1.0+3468+011f0ab0 | RHSA-2019:4273 | Dec 17, 2019 |
| oci-umount · ol 8 | 2:2.3.4-2.git87f9237.module+el8.1.0+5440+994fc847 | ELSA-2019-4269 | Jan 3, 2020 |
| podman · RHEL 8 | 0:1.0.0-4.git921f98f.module+el8.1.0+4908+72a45cef | RHSA-2019:4273 | Dec 17, 2019 |
| podman · ol 8 | 0:1.4.2-6.0.1.module+el8.1.0+5460+5d763c32 | ELSA-2019-4269 | Jan 3, 2020 |
| podman-docker · RHEL 8 | 0:1.0.0-4.git921f98f.module+el8.1.0+4908+72a45cef | RHSA-2019:4273 | Dec 17, 2019 |
| podman-docker · ol 8 | 0:1.4.2-6.0.1.module+el8.1.0+5460+5d763c32 | ELSA-2019-4269 | Jan 3, 2020 |
| podman-manpages · RHEL 8 | 0:1.4.2-6.module+el8.1.0+4830+f49150d7 | RHSA-2019:4269 | Dec 17, 2019 |
| podman-manpages · ol 8 | 0:1.4.2-6.0.1.module+el8.1.0+5460+5d763c32 | ELSA-2019-4269 | Jan 3, 2020 |
| podman-remote · RHEL 8 | 0:1.4.2-6.module+el8.1.0+4830+f49150d7 | RHSA-2019:4269 | Dec 17, 2019 |
| podman-remote · ol 8 | 0:1.4.2-6.0.1.module+el8.1.0+5460+5d763c32 | ELSA-2019-4269 | Jan 3, 2020 |
| podman-tests · RHEL 8 | 0:1.4.2-6.module+el8.1.0+4830+f49150d7 | RHSA-2019:4269 | Dec 17, 2019 |
| podman-tests · ol 8 | 0:1.4.2-6.0.1.module+el8.1.0+5460+5d763c32 | ELSA-2019-4269 | Jan 3, 2020 |
| python-podman-api · RHEL 8 | 0:1.2.0-0.1.gitd0a45fe.module+el8.1.0+4081+b29780af | RHSA-2019:4269 | Dec 17, 2019 |
| python-podman-api · ol 8 | 0:1.2.0-0.1.gitd0a45fe.module+el8.1.0+5440+994fc847 | ELSA-2019-4269 | Jan 3, 2020 |
| python-twisted · Ubuntu 18.04.6 LTS (bionic) | 17.9.0-2ubuntu0.1 | python-twisted 17.9.0-2ubuntu0.1 | Mar 12, 2020 |
| python-twisted · Ubuntu 20.04 LTS (focal) | 18.9.0-6ubuntu1 | python-twisted 18.9.0-6ubuntu1 | Aug 12, 2019 |
| python-twisted-bin · Ubuntu 18.04.6 LTS (bionic) | 17.9.0-2ubuntu0.1 | python-twisted-bin 17.9.0-2ubuntu0.1 | Mar 12, 2020 |
| python-twisted-bin · Ubuntu 20.04 LTS (focal) | 18.9.0-6ubuntu1 | python-twisted-bin 18.9.0-6ubuntu1 | Aug 12, 2019 |
| python-twisted-conch · Ubuntu 18.04.6 LTS (bionic) | 1:17.9.0-2ubuntu0.1 | python-twisted-conch 1:17.9.0-2ubuntu0.1 | Mar 12, 2020 |
| python-twisted-conch · Ubuntu 20.04 LTS (focal) | 1:18.9.0-6ubuntu1 | python-twisted-conch 1:18.9.0-6ubuntu1 | Aug 12, 2019 |
| python-twisted-core · Ubuntu 18.04.6 LTS (bionic) | 17.9.0-2ubuntu0.1 | python-twisted-core 17.9.0-2ubuntu0.1 | Mar 12, 2020 |
| python-twisted-core · Ubuntu 20.04 LTS (focal) | 18.9.0-6ubuntu1 | python-twisted-core 18.9.0-6ubuntu1 | Aug 12, 2019 |
| python-twisted-mail · Ubuntu 18.04.6 LTS (bionic) | 17.9.0-2ubuntu0.1 | python-twisted-mail 17.9.0-2ubuntu0.1 | Mar 12, 2020 |
| python-twisted-mail · Ubuntu 20.04 LTS (focal) | 18.9.0-6ubuntu1 | python-twisted-mail 18.9.0-6ubuntu1 | Aug 12, 2019 |
| python-twisted-names · Ubuntu 18.04.6 LTS (bionic) | 17.9.0-2ubuntu0.1 | python-twisted-names 17.9.0-2ubuntu0.1 | Mar 12, 2020 |
| python-twisted-names · Ubuntu 20.04 LTS (focal) | 18.9.0-6ubuntu1 | python-twisted-names 18.9.0-6ubuntu1 | Aug 12, 2019 |
| python-twisted-news · Ubuntu 18.04.6 LTS (bionic) | 17.9.0-2ubuntu0.1 | python-twisted-news 17.9.0-2ubuntu0.1 | Mar 12, 2020 |
| python-twisted-news · Ubuntu 20.04 LTS (focal) | 18.9.0-6ubuntu1 | python-twisted-news 18.9.0-6ubuntu1 | Aug 12, 2019 |
| python-twisted-runner · Ubuntu 18.04.6 LTS (bionic) | 17.9.0-2ubuntu0.1 | python-twisted-runner 17.9.0-2ubuntu0.1 | Mar 12, 2020 |
| python-twisted-runner · Ubuntu 20.04 LTS (focal) | 18.9.0-6ubuntu1 | python-twisted-runner 18.9.0-6ubuntu1 | Aug 12, 2019 |
| python-twisted-web · Ubuntu 18.04.6 LTS (bionic) | 17.9.0-2ubuntu0.1 | python-twisted-web 17.9.0-2ubuntu0.1 | Mar 12, 2020 |
| python-twisted-web · Ubuntu 20.04 LTS (focal) | 18.9.0-6ubuntu1 | python-twisted-web 18.9.0-6ubuntu1 | Aug 12, 2019 |
| python-twisted-words · Ubuntu 18.04.6 LTS (bionic) | 17.9.0-2ubuntu0.1 | python-twisted-words 17.9.0-2ubuntu0.1 | Mar 12, 2020 |
| python-twisted-words · Ubuntu 20.04 LTS (focal) | 18.9.0-6ubuntu1 | python-twisted-words 18.9.0-6ubuntu1 | Aug 12, 2019 |
| python3-twisted · Ubuntu 18.04.6 LTS (bionic) | 17.9.0-2ubuntu0.1 | python3-twisted 17.9.0-2ubuntu0.1 | Mar 12, 2020 |
| python3-twisted · Ubuntu 20.04 LTS (focal) | 18.9.0-6ubuntu1 | python3-twisted 18.9.0-6ubuntu1 | Aug 12, 2019 |
| python3-twisted · Ubuntu 24.10 (oracular) | 18.9.0-6ubuntu1 | python3-twisted 18.9.0-6ubuntu1 | Aug 13, 2019 |
| python3-twisted · Ubuntu 25.04 (plucky) | 18.9.0-6ubuntu1 | python3-twisted 18.9.0-6ubuntu1 | Aug 13, 2019 |
| python3-twisted-bin · Ubuntu 18.04.6 LTS (bionic) | 17.9.0-2ubuntu0.1 | python3-twisted-bin 17.9.0-2ubuntu0.1 | Mar 12, 2020 |
| python3-twisted-bin · Ubuntu 20.04 LTS (focal) | 18.9.0-6ubuntu1 | python3-twisted-bin 18.9.0-6ubuntu1 | Aug 12, 2019 |
| runc · RHEL 8 | 0:1.0.0-56.rc5.dev.git2abd837.module+el8.1.0+4908+72a45cef | RHSA-2019:4273 | Dec 17, 2019 |
| runc · ol 8 | 0:1.0.0-61.rc8.module+el8.1.0+5460+5d763c32 | ELSA-2019-4269 | Jan 3, 2020 |
| skopeo · RHEL 8 | 1:0.1.32-6.git1715c90.module+el8.1.0+4903+9bde5d6c | RHSA-2019:4273 | Dec 17, 2019 |
| skopeo · ol 8 | 1:0.1.37-6.0.1.module+el8.1.0+5460+5d763c32 | ELSA-2019-4269 | Jan 3, 2020 |
| skopeo-tests · RHEL 8 | 1:0.1.37-6.module+el8.1.0+4876+e678a192 | RHSA-2019:4269 | Dec 17, 2019 |
| skopeo-tests · ol 8 | 1:0.1.37-6.0.1.module+el8.1.0+5460+5d763c32 | ELSA-2019-4269 | Jan 3, 2020 |
| slirp4netns · RHEL 8 | 0:0.1-3.dev.gitc4e1bc5.module+el8.1.0+4308+9d868e48 | RHSA-2019:4273 | Dec 17, 2019 |
| slirp4netns · ol 8 | 0:0.3.0-4.module+el8.1.0+5440+994fc847 | ELSA-2019-4269 | Jan 3, 2020 |
| toolbox · RHEL 8 | 0:0.0.4-1.module+el8.1.0+4081+b29780af | RHSA-2019:4269 | Dec 17, 2019 |
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