Rapid7 Vulnerability & Exploit Database

Red Hat: CVE-2019-9517: request for large response leads to denial of service (Multiple Advisories)

Free InsightVM Trial No Credit Card Necessary
2024 Attack Intel Report Latest research by Rapid7 Labs
Back to Search

Red Hat: CVE-2019-9517: request for large response leads to denial of service (Multiple Advisories)

Severity
8
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:C)
Published
08/13/2019
Created
09/26/2019
Added
09/25/2019
Modified
12/15/2023

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

With Rapid7 live dashboards, I have a clear view of all the assets on my network, which ones can be exploited, and what I need to do in order to reduce the risk in my environment in real-time. No other tool gives us that kind of value and insight.

– Scott Cheney, Manager of Information Security, Sierra View Medical Center

;