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HTTP/2: 0-length headers lead to denial of service

🗓️ 17 Sep 2019 15:16:26Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 2 Views

HTTP/2 denial of service via zero-length headers causing memory to be retained.

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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux7aarch64rh-nginx114-nginx1:1.14.1-1.el7.1rh-nginx114-nginx-1:1.14.1-1.el7.1.aarch64.rpm
Red Hat Enterprise Linux7ppc64lerh-nginx114-nginx1:1.14.1-1.el7.1rh-nginx114-nginx-1:1.14.1-1.el7.1.ppc64le.rpm
Red Hat Enterprise Linux7s390xrh-nginx114-nginx1:1.14.1-1.el7.1rh-nginx114-nginx-1:1.14.1-1.el7.1.s390x.rpm
Red Hat Enterprise Linux7x86_64rh-nginx114-nginx1:1.14.1-1.el7.1rh-nginx114-nginx-1:1.14.1-1.el7.1.x86_64.rpm
Red Hat Enterprise Linux7aarch64rh-nginx114-nginx-debuginfo1:1.14.1-1.el7.1rh-nginx114-nginx-debuginfo-1:1.14.1-1.el7.1.aarch64.rpm
Red Hat Enterprise Linux7ppc64lerh-nginx114-nginx-debuginfo1:1.14.1-1.el7.1rh-nginx114-nginx-debuginfo-1:1.14.1-1.el7.1.ppc64le.rpm
Red Hat Enterprise Linux7s390xrh-nginx114-nginx-debuginfo1:1.14.1-1.el7.1rh-nginx114-nginx-debuginfo-1:1.14.1-1.el7.1.s390x.rpm
Red Hat Enterprise Linux7x86_64rh-nginx114-nginx-debuginfo1:1.14.1-1.el7.1rh-nginx114-nginx-debuginfo-1:1.14.1-1.el7.1.x86_64.rpm
Red Hat Enterprise Linux7aarch64rh-nginx114-nginx-mod-http-image-filter1:1.14.1-1.el7.1rh-nginx114-nginx-mod-http-image-filter-1:1.14.1-1.el7.1.aarch64.rpm
Red Hat Enterprise Linux7ppc64lerh-nginx114-nginx-mod-http-image-filter1:1.14.1-1.el7.1rh-nginx114-nginx-mod-http-image-filter-1:1.14.1-1.el7.1.ppc64le.rpm
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28 Jun 2026 12:14Current
7.1High risk
Vulners AI Score7.1
CVSS 3.16.5
CVSS 26.8
CVSS 37.5
EPSS0.56262
CWE-400
http version twozero length headersmemory exhaustiondenial of serviceheader memory leak
2