CVE-2020-11996

Published: 26 June 2020

A specially crafted sequence of HTTP/2 requests sent to Apache Tomcat 10.0.0-M1 to 10.0.0-M5, 9.0.0.M1 to 9.0.35 and 8.5.0 to 8.5.55 could trigger high CPU usage for several seconds. If a sufficient number of such requests were made on concurrent HTTP/2 connections, the server could become unresponsive.

Priority

Medium

CVSS 3 base score: 7.5

Status

Package Release Status
tomcat8
Launchpad, Ubuntu, Debian
Upstream Needs triage

Ubuntu 21.10 (Impish Indri) Does not exist

Ubuntu 21.04 (Hirsute Hippo) Does not exist

Ubuntu 20.04 LTS (Focal Fossa) Does not exist

Ubuntu 18.04 LTS (Bionic Beaver) Needs triage

Ubuntu 16.04 ESM (Xenial Xerus) Not vulnerable
(code not present)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

tomcat9
Launchpad, Ubuntu, Debian
Upstream
Released (9.0.36-1)
Ubuntu 21.10 (Impish Indri) Not vulnerable
(9.0.36-1)
Ubuntu 21.04 (Hirsute Hippo) Not vulnerable
(9.0.36-1)
Ubuntu 20.04 LTS (Focal Fossa)
Released (9.0.31-1ubuntu0.1)
Ubuntu 18.04 LTS (Bionic Beaver) Needs triage

Ubuntu 16.04 ESM (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

Notes

AuthorNote
mdeslaur
HTTP/2 support introduced in 8.5

References