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CVE-2021-43980

Published: 28 September 2022

The simplified implementation of blocking reads and writes introduced in Tomcat 10 and back-ported to Tomcat 9.0.47 onwards exposed a long standing (but extremely hard to trigger) concurrency bug in Apache Tomcat 10.1.0 to 10.1.0-M12, 10.0.0-M1 to 10.0.18, 9.0.0-M1 to 9.0.60 and 8.5.0 to 8.5.77 that could cause client connections to share an Http11Processor instance resulting in responses, or part responses, to be received by the wrong client.

Priority

Medium

CVSS 3 base score: 3.7

Status

Package Release Status
tomcat6
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Does not exist

jammy Does not exist

trusty Needs triage

upstream Needs triage

xenial Needs triage

tomcat7
Launchpad, Ubuntu, Debian
bionic Needs triage

focal Does not exist

jammy Does not exist

trusty Needs triage

upstream Needs triage

xenial Needs triage

tomcat8
Launchpad, Ubuntu, Debian
bionic Needs triage

focal Does not exist

jammy Does not exist

trusty Does not exist

upstream Needs triage

xenial Needs triage

tomcat9
Launchpad, Ubuntu, Debian
bionic Needs triage

focal Needs triage

jammy Needs triage

kinetic Needs triage

trusty Does not exist

upstream Needs triage

xenial Does not exist