CVE-2021-43980
Fixed in a distro release EPSS 2%CVSS 3.7
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.
Products: Apache Software Foundation Apache Tomcat
Fixed upstream
| Ecosystem | Package | Fixed in |
|---|---|---|
| Maven | org.apache.tomcat:tomcat | 8.5.78 |
| Maven | org.apache.tomcat:tomcat | 9.0.62 |
| Maven | org.apache.tomcat:tomcat | 10.0.20 |
| Maven | org.apache.tomcat:tomcat | 10.1.0-M14 |
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Debian 10 | tomcat9 | 9.0.31-1~deb10u7 |
| Debian 11 | tomcat9 | 9.0.43-2~deb11u4 |
| Debian 12 | tomcat9 | 9.0.62-1 |
| Debian 13 | tomcat9 | 9.0.62-1 |
| Debian 14 | tomcat9 | 9.0.62-1 |
| Red Hat jboss enterprise web server 5.7 | jws5 | 0:1-8.el9jws |
| Red Hat jboss enterprise web server 5.7 | jws5-ecj | 0:4.20.0-1.redhat_00002.1.el8jws |
| Red Hat jboss enterprise web server 5.7 | jws5-ecj | 0:4.20.0-1.redhat_00002.1.el7jws |
| Red Hat jboss enterprise web server 5.7 | jws5-ecj | 0:4.20.0-1.redhat_00002.1.el9jws |
| Red Hat jboss enterprise web server 5.7 | jws5-javapackages-tools | 0:3.4.1-5.15.11.el9jws |
| Red Hat jboss enterprise web server 5.7 | jws5-jboss-logging | 0:3.4.1-1.Final_redhat_00001.1.el9jws |
| Red Hat jboss enterprise web server 5.7 | jws5-mod_cluster | 0:1.4.3-2.Final_redhat_00002.1.el9jws |
| Red Hat jboss enterprise web server 5.7 | jws5-mod_cluster-tomcat | 0:1.4.3-2.Final_redhat_00002.1.el9jws |
| Red Hat jboss enterprise web server 5.7 | jws5-python-javapackages | 0:3.4.1-5.15.11.el9jws |
| Red Hat jboss enterprise web server 5.7 | jws5-runtime | 0:1-8.el9jws |
| Red Hat jboss enterprise web server 5.7 | jws5-tomcat | 0:9.0.62-9.redhat_00005.1.el8jws |
| Red Hat jboss enterprise web server 5.7 | jws5-tomcat | 0:9.0.62-9.redhat_00005.1.el7jws |
| Red Hat jboss enterprise web server 5.7 | jws5-tomcat | 0:9.0.62-9.redhat_00005.1.el9jws |
| Red Hat jboss enterprise web server 5.7 | jws5-tomcat-admin-webapps | 0:9.0.62-9.redhat_00005.1.el8jws |
| Red Hat jboss enterprise web server 5.7 | jws5-tomcat-admin-webapps | 0:9.0.62-9.redhat_00005.1.el9jws |
| Red Hat jboss enterprise web server 5.7 | jws5-tomcat-admin-webapps | 0:9.0.62-9.redhat_00005.1.el7jws |
| Red Hat jboss enterprise web server 5.7 | jws5-tomcat-docs-webapp | 0:9.0.62-9.redhat_00005.1.el8jws |
| Red Hat jboss enterprise web server 5.7 | jws5-tomcat-docs-webapp | 0:9.0.62-9.redhat_00005.1.el9jws |
| Red Hat jboss enterprise web server 5.7 | jws5-tomcat-docs-webapp | 0:9.0.62-9.redhat_00005.1.el7jws |
| Red Hat jboss enterprise web server 5.7 | jws5-tomcat-el-3.0-api | 0:9.0.62-9.redhat_00005.1.el7jws |
| Red Hat jboss enterprise web server 5.7 | jws5-tomcat-el-3.0-api | 0:9.0.62-9.redhat_00005.1.el9jws |
| Red Hat jboss enterprise web server 5.7 | jws5-tomcat-el-3.0-api | 0:9.0.62-9.redhat_00005.1.el8jws |
| Red Hat jboss enterprise web server 5.7 | jws5-tomcat-java-jdk11 | 0:9.0.62-9.redhat_00005.1.el7jws |
| Red Hat jboss enterprise web server 5.7 | jws5-tomcat-java-jdk8 | 0:9.0.62-9.redhat_00005.1.el7jws |
| Red Hat jboss enterprise web server 5.7 | jws5-tomcat-javadoc | 0:9.0.62-9.redhat_00005.1.el9jws |
| Red Hat jboss enterprise web server 5.7 | jws5-tomcat-javadoc | 0:9.0.62-9.redhat_00005.1.el8jws |
| Red Hat jboss enterprise web server 5.7 | jws5-tomcat-javadoc | 0:9.0.62-9.redhat_00005.1.el7jws |
| Red Hat jboss enterprise web server 5.7 | jws5-tomcat-jsp-2.3-api | 0:9.0.62-9.redhat_00005.1.el8jws |
| Red Hat jboss enterprise web server 5.7 | jws5-tomcat-jsp-2.3-api | 0:9.0.62-9.redhat_00005.1.el9jws |
| Red Hat jboss enterprise web server 5.7 | jws5-tomcat-jsp-2.3-api | 0:9.0.62-9.redhat_00005.1.el7jws |
| Red Hat jboss enterprise web server 5.7 | jws5-tomcat-lib | 0:9.0.62-9.redhat_00005.1.el8jws |
| Red Hat jboss enterprise web server 5.7 | jws5-tomcat-lib | 0:9.0.62-9.redhat_00005.1.el7jws |
| Red Hat jboss enterprise web server 5.7 | jws5-tomcat-lib | 0:9.0.62-9.redhat_00005.1.el9jws |
| Red Hat jboss enterprise web server 5.7 | jws5-tomcat-native | 0:1.2.31-10.redhat_10.el8jws |
| Red Hat jboss enterprise web server 5.7 | jws5-tomcat-native | 0:1.2.31-10.redhat_10.el7jws |
| Red Hat jboss enterprise web server 5.7 | jws5-tomcat-native | 0:1.2.31-10.redhat_10.el9jws |
| Red Hat jboss enterprise web server 5.7 | jws5-tomcat-native-debuginfo | 0:1.2.31-10.redhat_10.el7jws |
| Red Hat jboss enterprise web server 5.7 | jws5-tomcat-native-debuginfo | 0:1.2.31-10.redhat_10.el9jws |
| Red Hat jboss enterprise web server 5.7 | jws5-tomcat-native-debuginfo | 0:1.2.31-10.redhat_10.el8jws |
| Red Hat jboss enterprise web server 5.7 | jws5-tomcat-selinux | 0:9.0.62-9.redhat_00005.1.el8jws |
| Red Hat jboss enterprise web server 5.7 | jws5-tomcat-selinux | 0:9.0.62-9.redhat_00005.1.el7jws |
| Red Hat jboss enterprise web server 5.7 | jws5-tomcat-selinux | 0:9.0.62-9.redhat_00005.1.el9jws |
| Red Hat jboss enterprise web server 5.7 | jws5-tomcat-servlet-4.0-api | 0:9.0.62-9.redhat_00005.1.el8jws |
| Red Hat jboss enterprise web server 5.7 | jws5-tomcat-servlet-4.0-api | 0:9.0.62-9.redhat_00005.1.el9jws |
| Red Hat jboss enterprise web server 5.7 | jws5-tomcat-servlet-4.0-api | 0:9.0.62-9.redhat_00005.1.el7jws |
| Red Hat jboss enterprise web server 5.7 | jws5-tomcat-vault | 0:1.1.8-4.Final_redhat_00004.1.el9jws |
| Red Hat jboss enterprise web server 5.7 | jws5-tomcat-vault-javadoc | 0:1.1.8-4.Final_redhat_00004.1.el9jws |
| Red Hat jboss enterprise web server 5.7 | jws5-tomcat-webapps | 0:9.0.62-9.redhat_00005.1.el7jws |
| Red Hat jboss enterprise web server 5.7 | jws5-tomcat-webapps | 0:9.0.62-9.redhat_00005.1.el9jws |
| Red Hat jboss enterprise web server 5.7 | jws5-tomcat-webapps | 0:9.0.62-9.redhat_00005.1.el8jws |
| SUSE Enterprise Storage 6 | tomcat | 9.0.36-150100.4.81.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS | tomcat | 9.0.36-150100.4.81.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS | tomcat | 9.0.36-150100.4.81.1 |
| SUSE Linux Enterprise High Performance Computing 15-ESPOS | tomcat | 9.0.36-150000.3.101.2 |
| SUSE Linux Enterprise High Performance Computing 15-LTSS | tomcat | 9.0.36-150000.3.101.2 |
| SUSE Linux Enterprise Server 12 SP5 | tomcat | 9.0.36-3.90.1 |
| SUSE Linux Enterprise Server 12 SP5-LTSS | tomcat | 9.0.115-3.160.1 |
| SUSE Linux Enterprise Server 15 SP1-BCL | tomcat | 9.0.36-150100.4.81.1 |
| SUSE Linux Enterprise Server 15 SP1-LTSS | tomcat | 9.0.36-150100.4.81.1 |
| SUSE Linux Enterprise Server 15-LTSS | tomcat | 9.0.36-150000.3.101.2 |
| SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 | tomcat | 9.0.115-3.160.1 |
| SUSE Linux Enterprise Server for SAP Applications 12 SP5 | tomcat | 9.0.36-3.90.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 | tomcat | 9.0.36-150000.3.101.2 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP1 | tomcat | 9.0.36-150100.4.81.1 |
| Ubuntu Pro 18.04 LTS | tomcat8 | no fix |
| Ubuntu Pro 18.04 LTS | tomcat9 | no fix |
| Ubuntu Pro 20.04 LTS | tomcat9 | no fix |
| Ubuntu Pro 22.04 LTS | tomcat9 | no fix |
| openSUSE Tumbleweed | tomcat | 9.0.43-11.1 |
| openSUSE Tumbleweed | tomcat10 | 10.1.14-1.1 |