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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
bionic Needs triage

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

precise Does not exist

trusty Does not exist

upstream Needs triage

xenial Not vulnerable
(code not present)
tomcat9
Launchpad, Ubuntu, Debian
bionic Needs triage

eoan Ignored
(reached end-of-life)
focal
Released (9.0.31-1ubuntu0.1)
groovy Not vulnerable
(9.0.36-1)
hirsute Not vulnerable
(9.0.36-1)
impish Not vulnerable
(9.0.36-1)
jammy Not vulnerable
(9.0.36-1)
precise Does not exist

trusty Does not exist

upstream
Released (9.0.36-1)
xenial Does not exist

Notes

AuthorNote
mdeslaur
HTTP/2 support introduced in 8.5

References

Bugs