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.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Tomcat | Apache | 8.5.0 (including) | 8.5.55 (including) |
| Tomcat | Apache | 9.0.0 (including) | 9.0.35 (including) |
| Tomcat | Apache | 9.0.0-milestone1 (including) | 9.0.0-milestone1 (including) |
| Tomcat | Apache | 9.0.0-milestone10 (including) | 9.0.0-milestone10 (including) |
| Tomcat | Apache | 9.0.0-milestone11 (including) | 9.0.0-milestone11 (including) |
| Tomcat | Apache | 9.0.0-milestone12 (including) | 9.0.0-milestone12 (including) |
| Tomcat | Apache | 9.0.0-milestone13 (including) | 9.0.0-milestone13 (including) |
| Tomcat | Apache | 9.0.0-milestone14 (including) | 9.0.0-milestone14 (including) |
| Tomcat | Apache | 9.0.0-milestone15 (including) | 9.0.0-milestone15 (including) |
| Tomcat | Apache | 9.0.0-milestone16 (including) | 9.0.0-milestone16 (including) |
| Tomcat | Apache | 9.0.0-milestone17 (including) | 9.0.0-milestone17 (including) |
| Tomcat | Apache | 9.0.0-milestone18 (including) | 9.0.0-milestone18 (including) |
| Tomcat | Apache | 9.0.0-milestone19 (including) | 9.0.0-milestone19 (including) |
| Tomcat | Apache | 9.0.0-milestone2 (including) | 9.0.0-milestone2 (including) |
| Tomcat | Apache | 9.0.0-milestone20 (including) | 9.0.0-milestone20 (including) |
| Tomcat | Apache | 9.0.0-milestone21 (including) | 9.0.0-milestone21 (including) |
| Tomcat | Apache | 9.0.0-milestone22 (including) | 9.0.0-milestone22 (including) |
| Tomcat | Apache | 9.0.0-milestone23 (including) | 9.0.0-milestone23 (including) |
| Tomcat | Apache | 9.0.0-milestone24 (including) | 9.0.0-milestone24 (including) |
| Tomcat | Apache | 9.0.0-milestone25 (including) | 9.0.0-milestone25 (including) |
| Tomcat | Apache | 9.0.0-milestone26 (including) | 9.0.0-milestone26 (including) |
| Tomcat | Apache | 9.0.0-milestone27 (including) | 9.0.0-milestone27 (including) |
| Tomcat | Apache | 9.0.0-milestone3 (including) | 9.0.0-milestone3 (including) |
| Tomcat | Apache | 9.0.0-milestone4 (including) | 9.0.0-milestone4 (including) |
| Tomcat | Apache | 9.0.0-milestone5 (including) | 9.0.0-milestone5 (including) |
| Tomcat | Apache | 9.0.0-milestone6 (including) | 9.0.0-milestone6 (including) |
| Tomcat | Apache | 9.0.0-milestone7 (including) | 9.0.0-milestone7 (including) |
| Tomcat | Apache | 9.0.0-milestone8 (including) | 9.0.0-milestone8 (including) |
| Tomcat | Apache | 9.0.0-milestone9 (including) | 9.0.0-milestone9 (including) |
| Tomcat | Apache | 10.0.0-milestone1 (including) | 10.0.0-milestone1 (including) |
| Tomcat | Apache | 10.0.0-milestone2 (including) | 10.0.0-milestone2 (including) |
| Tomcat | Apache | 10.0.0-milestone3 (including) | 10.0.0-milestone3 (including) |
| Tomcat | Apache | 10.0.0-milestone4 (including) | 10.0.0-milestone4 (including) |
| Tomcat | Apache | 10.0.0-milestone5 (including) | 10.0.0-milestone5 (including) |
| Red Hat Fuse 7.9 | RedHat | tomcat | * |
| Red Hat JBoss Web Server 5 | RedHat | tomcat | * |
| Red Hat JBoss Web Server 5.4 on RHEL 6 | RedHat | jws5-jboss-logging-0:3.4.1-1.Final_redhat_00001.1.el6jws | * |
| Red Hat JBoss Web Server 5.4 on RHEL 6 | RedHat | jws5-mod_cluster-0:1.4.2-7.Final_redhat_00002.2.el6jws | * |
| Red Hat JBoss Web Server 5.4 on RHEL 6 | RedHat | jws5-tomcat-0:9.0.36-6.redhat_5.2.el6jws | * |
| Red Hat JBoss Web Server 5.4 on RHEL 6 | RedHat | jws5-tomcat-native-0:1.2.25-2.redhat_2.el6jws | * |
| Red Hat JBoss Web Server 5.4 on RHEL 7 | RedHat | jws5-jboss-logging-0:3.4.1-1.Final_redhat_00001.1.el7jws | * |
| Red Hat JBoss Web Server 5.4 on RHEL 7 | RedHat | jws5-mod_cluster-0:1.4.2-7.Final_redhat_00002.2.el7jws | * |
| Red Hat JBoss Web Server 5.4 on RHEL 7 | RedHat | jws5-tomcat-0:9.0.36-6.redhat_5.2.el7jws | * |
| Red Hat JBoss Web Server 5.4 on RHEL 7 | RedHat | jws5-tomcat-native-0:1.2.25-2.redhat_2.el7jws | * |
| Red Hat JBoss Web Server 5.4 on RHEL 8 | RedHat | jws5-jboss-logging-0:3.4.1-1.Final_redhat_00001.1.el8jws | * |
| Red Hat JBoss Web Server 5.4 on RHEL 8 | RedHat | jws5-mod_cluster-0:1.4.2-7.Final_redhat_00002.2.el8jws | * |
| Red Hat JBoss Web Server 5.4 on RHEL 8 | RedHat | jws5-tomcat-0:9.0.36-6.redhat_5.2.el8jws | * |
| Red Hat JBoss Web Server 5.4 on RHEL 8 | RedHat | jws5-tomcat-native-0:1.2.25-2.redhat_2.el8jws | * |
| Red Hat support for Spring Boot 2.3.6 | RedHat | tomcat | * |
| Text-Only RHOAR | RedHat | * | |
| Tomcat8 | Ubuntu | bionic | * |
| Tomcat8 | Ubuntu | esm-apps/bionic | * |
| Tomcat8 | Ubuntu | trusty | * |
| Tomcat8 | Ubuntu | upstream | * |
| Tomcat9 | Ubuntu | bionic | * |
| Tomcat9 | Ubuntu | eoan | * |
| Tomcat9 | Ubuntu | esm-apps/bionic | * |
| Tomcat9 | Ubuntu | esm-apps/focal | * |
| Tomcat9 | Ubuntu | focal | * |
| Tomcat9 | Ubuntu | trusty | * |
| Tomcat9 | Ubuntu | upstream | * |
References
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00064.html
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00072.html
- https://lists.apache.org/thread.html/r2529016c311ce9485e6f173446d469600fdfbb94dccadfcd9dfdac79%40%3Cusers.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/r3ea96d8f36dd404acce83df8aeb22a9e807d6c13ca9c5dec72f872cd%40%3Cnotifications.ofbiz.apache.org%3E
- https://lists.apache.org/thread.html/r5541ef6b6b68b49f76fc4c45695940116da2bcbe0312ef204a00a2e0%40%3Cannounce.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/r5a4f80a6acc6607d61dae424b643b594c6188dd4e1eff04705c10db2%40%3Cnotifications.ofbiz.apache.org%3E
- https://lists.apache.org/thread.html/r6c29801370a36c1a5159679269777ad0c73276d3015b8bbefea66e5c%40%3Cnotifications.ofbiz.apache.org%3E
- https://lists.apache.org/thread.html/r74f5a8204efe574cbfcd95b2a16236fe95beb45c4d9fee3dc789dca9%40%3Ccommits.ofbiz.apache.org%3E
- https://lists.apache.org/thread.html/r8f3d416c193bc9384a8a7dd368623d441f5fcaff1057115008100561%40%3Ccommits.ofbiz.apache.org%3E
- https://lists.apache.org/thread.html/r8f7484589454638af527182ae55ef5b628ba00c05c5b11887c922fb1%40%3Cnotifications.ofbiz.apache.org%3E
- https://lists.apache.org/thread.html/r93ca628ef3a4530dfe5ac49fddc795f0920a4b2a408b57a30926a42b%40%3Ccommits.ofbiz.apache.org%3E
- https://lists.apache.org/thread.html/r9ad911fe49450ed9405827af0e7a74104041081ff91864b1f2546bbd%40%3Cnotifications.ofbiz.apache.org%3E
- https://lists.apache.org/thread.html/ra7092f7492569b39b04ec0decf52628ba86c51f15efb38f5853e2760%40%3Cnotifications.ofbiz.apache.org%3E
- https://lists.apache.org/thread.html/rb4ee49ecc4c59620ffd5e66e84a17e526c2c3cfa95d0cd682d90d338%40%3Cnotifications.ofbiz.apache.org%3E
- https://lists.apache.org/thread.html/rb820f1a2a02bf07414be12c653c2ab5321fd87b9bf6c5e635c53ff4b%40%3Cnotifications.ofbiz.apache.org%3E
- https://lists.apache.org/thread.html/rc80b96b4b96618b2b7461cb90664a428cfd6605eea9f74e51b792542%40%3Cnotifications.ofbiz.apache.org%3E
- https://lists.apache.org/thread.html/rea65d6ef2e45dd1c45faae83922042732866c7b88fa109b76c83db52%40%3Cnotifications.ofbiz.apache.org%3E
- https://lists.apache.org/thread.html/ref0339792ac6dac1dba83c071a727ad72380899bde60f6aaad4031b9%40%3Cnotifications.ofbiz.apache.org%3E
- https://lists.debian.org/debian-lts-announce/2020/07/msg00010.html
- https://security.netapp.com/advisory/ntap-20200709-0002/
- https://usn.ubuntu.com/4596-1/
- https://www.debian.org/security/2020/dsa-4727
- https://www.oracle.com/security-alerts/cpujan2021.html
- https://www.oracle.com/security-alerts/cpuoct2020.html
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00064.html
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00072.html
- https://lists.apache.org/thread.html/r2529016c311ce9485e6f173446d469600fdfbb94dccadfcd9dfdac79%40%3Cusers.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/r3ea96d8f36dd404acce83df8aeb22a9e807d6c13ca9c5dec72f872cd%40%3Cnotifications.ofbiz.apache.org%3E
- https://lists.apache.org/thread.html/r5541ef6b6b68b49f76fc4c45695940116da2bcbe0312ef204a00a2e0%40%3Cannounce.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/r5a4f80a6acc6607d61dae424b643b594c6188dd4e1eff04705c10db2%40%3Cnotifications.ofbiz.apache.org%3E
- https://lists.apache.org/thread.html/r6c29801370a36c1a5159679269777ad0c73276d3015b8bbefea66e5c%40%3Cnotifications.ofbiz.apache.org%3E
- https://lists.apache.org/thread.html/r74f5a8204efe574cbfcd95b2a16236fe95beb45c4d9fee3dc789dca9%40%3Ccommits.ofbiz.apache.org%3E
- https://lists.apache.org/thread.html/r8f3d416c193bc9384a8a7dd368623d441f5fcaff1057115008100561%40%3Ccommits.ofbiz.apache.org%3E
- https://lists.apache.org/thread.html/r8f7484589454638af527182ae55ef5b628ba00c05c5b11887c922fb1%40%3Cnotifications.ofbiz.apache.org%3E
- https://lists.apache.org/thread.html/r93ca628ef3a4530dfe5ac49fddc795f0920a4b2a408b57a30926a42b%40%3Ccommits.ofbiz.apache.org%3E
- https://lists.apache.org/thread.html/r9ad911fe49450ed9405827af0e7a74104041081ff91864b1f2546bbd%40%3Cnotifications.ofbiz.apache.org%3E
- https://lists.apache.org/thread.html/ra7092f7492569b39b04ec0decf52628ba86c51f15efb38f5853e2760%40%3Cnotifications.ofbiz.apache.org%3E
- https://lists.apache.org/thread.html/rb4ee49ecc4c59620ffd5e66e84a17e526c2c3cfa95d0cd682d90d338%40%3Cnotifications.ofbiz.apache.org%3E
- https://lists.apache.org/thread.html/rb820f1a2a02bf07414be12c653c2ab5321fd87b9bf6c5e635c53ff4b%40%3Cnotifications.ofbiz.apache.org%3E
- https://lists.apache.org/thread.html/rc80b96b4b96618b2b7461cb90664a428cfd6605eea9f74e51b792542%40%3Cnotifications.ofbiz.apache.org%3E
- https://lists.apache.org/thread.html/rea65d6ef2e45dd1c45faae83922042732866c7b88fa109b76c83db52%40%3Cnotifications.ofbiz.apache.org%3E
- https://lists.apache.org/thread.html/ref0339792ac6dac1dba83c071a727ad72380899bde60f6aaad4031b9%40%3Cnotifications.ofbiz.apache.org%3E
- https://lists.debian.org/debian-lts-announce/2020/07/msg00010.html
- https://security.netapp.com/advisory/ntap-20200709-0002/
- https://usn.ubuntu.com/4596-1/
- https://www.debian.org/security/2020/dsa-4727
- https://www.oracle.com/security-alerts/cpujan2021.html
- https://www.oracle.com/security-alerts/cpuoct2020.html