Red Hat: CVE-2019-9517: request for large response leads to denial of service (Multiple Advisories)
Description
Some HTTP/2 implementations are vulnerable to unconstrained interal data buffering, potentially leading to a denial of service. The attacker opens the HTTP/2 window so the peer can send without constraint; however, they leave the TCP window closed so the peer cannot actually write (many of) the bytes on the wire. The attacker then sends a stream of requests for a large response object. Depending on how the servers queue the responses, this can consume excess memory, CPU, or both.
Solution(s)
- redhat-upgrade-httpd
- redhat-upgrade-httpd-debuginfo
- redhat-upgrade-httpd-debugsource
- redhat-upgrade-httpd-devel
- redhat-upgrade-httpd-filesystem
- redhat-upgrade-httpd-manual
- redhat-upgrade-httpd-tools
- redhat-upgrade-httpd-tools-debuginfo
- redhat-upgrade-mod_http2
- redhat-upgrade-mod_http2-debuginfo
- redhat-upgrade-mod_http2-debugsource
- redhat-upgrade-mod_ldap
- redhat-upgrade-mod_ldap-debuginfo
- redhat-upgrade-mod_md
- redhat-upgrade-mod_md-debuginfo
- redhat-upgrade-mod_proxy_html
- redhat-upgrade-mod_proxy_html-debuginfo
- redhat-upgrade-mod_session
- redhat-upgrade-mod_session-debuginfo
- redhat-upgrade-mod_ssl
- redhat-upgrade-mod_ssl-debuginfo
- redhat-upgrade-nodejs
- redhat-upgrade-nodejs-debuginfo
- redhat-upgrade-nodejs-debugsource
- redhat-upgrade-nodejs-devel
- redhat-upgrade-nodejs-devel-debuginfo
- redhat-upgrade-nodejs-docs
- redhat-upgrade-nodejs-nodemon
- redhat-upgrade-nodejs-packaging
- redhat-upgrade-npm
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