CVE-2020-11996

Description

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.

CVSS breakdown

Affected products

• apache / Apache Tomcat10.0.0-M1 to 10.0.0-M5 – 10.0.0-M1 to 10.0.0-M5
• apache / Apache Tomcat8.5.0 to 8.5.55 – 8.5.0 to 8.5.55
• apache / Apache Tomcat9.0.0.M1 to 9.0.35 – 9.0.0.M1 to 9.0.35
• apache / Tomcat9.0.0 – 9.0.0
• apache / Tomcat9.0.0 – 9.0.0
• apache / Tomcat9.0.0 – 9.0.0
• apache / Tomcat9.0.0 – 9.0.0
• apache / Tomcat9.0.0 – 9.0.0
• apache / Tomcat9.0.0 – 9.0.0
• apache / Tomcat9.0.0 – 9.0.0
• apache / Tomcat9.0.0 – 9.0.0
• apache / Tomcat9.0.0 – 9.0.0
• apache / Tomcat9.0.0 – 9.0.0
• apache / Tomcat9.0.0 – 9.0.0
• apache / Tomcat9.0.0 – 9.0.0
• apache / Tomcat9.0.0 – 9.0.0
• apache / Tomcat9.0.0 – 9.0.0
• apache / Tomcat9.0.0 – 9.0.0
• apache / Tomcat9.0.0 – 9.0.0
• apache / Tomcat9.0.0 – 9.0.0
• apache / Tomcat9.0.0 – 9.0.0
• apache / Tomcat9.0.0 – 9.0.0
• apache / Tomcat9.0.0 – 9.0.0
• apache / Tomcat9.0.0 – 9.0.0
• apache / Tomcat9.0.0 – 9.0.0
• apache / Tomcat9.0.0 – 9.0.0
• apache / Tomcat9.0.0 – 9.0.0
• apache / Tomcat9.0.0 – 9.0.0
• apache / Tomcat10.0.0 – 10.0.0
• apache / Tomcat10.0.0 – 10.0.0
• apache / Tomcat10.0.0 – 10.0.0
• apache / Tomcat10.0.0 – 10.0.0
• apache / Tomcat10.0.0 – 10.0.0
• apache / Tomcat9.0.0 – 9.0.0
• apache / Tomcat8.5.0 – 8.5.55
• apache / Tomcat9.0.0 – 9.0.0
• Canonical / Ubuntu Linux20.04 – 20.04
• Debian / debian_linux9.0 – 9.0
• Debian / debian_linux10.0 – 10.0
• NetApp / oncommand_system_manager3.1.3 – 3.1.3
• NetApp / oncommand_system_manager3.0 – 3.0
• openSUSE / Leap15.2 – 15.2
• openSUSE / Leap15.1 – 15.1
• oracle / MySQL Enterprise Monitor8.0.21
• oracle / Siebel UI Framework20.12
• oracle / workload_manager12.2.0.1 – 12.2.0.1
• oracle / workload_manager19c – 19c
• oracle / workload_manager18c – 18c

References

• MAILING_LISThttps://lists.apache.org/thread.html/r5541ef6b6b68b49f76fc4c45695940116da2bcbe0312ef204a00a2e0%40%3Cannounce.tomcat.apache.org%3E
• MAILING_LISThttps://lists.apache.org/thread.html/ra7092f7492569b39b04ec0decf52628ba86c51f15efb38f5853e2760%40%3Cnotifications.ofbiz.apache.org%3E
• MAILING_LISThttps://lists.apache.org/thread.html/rb4ee49ecc4c59620ffd5e66e84a17e526c2c3cfa95d0cd682d90d338%40%3Cnotifications.ofbiz.apache.org%3E
• MAILING_LISThttps://lists.apache.org/thread.html/rb820f1a2a02bf07414be12c653c2ab5321fd87b9bf6c5e635c53ff4b%40%3Cnotifications.ofbiz.apache.org%3E
• MAILING_LISThttps://lists.apache.org/thread.html/r8f7484589454638af527182ae55ef5b628ba00c05c5b11887c922fb1%40%3Cnotifications.ofbiz.apache.org%3E
• MAILING_LISThttps://lists.apache.org/thread.html/r74f5a8204efe574cbfcd95b2a16236fe95beb45c4d9fee3dc789dca9%40%3Ccommits.ofbiz.apache.org%3E
• MAILING_LISThttps://lists.apache.org/thread.html/rea65d6ef2e45dd1c45faae83922042732866c7b88fa109b76c83db52%40%3Cnotifications.ofbiz.apache.org%3E
• MAILING_LISThttps://lists.apache.org/thread.html/rc80b96b4b96618b2b7461cb90664a428cfd6605eea9f74e51b792542%40%3Cnotifications.ofbiz.apache.org%3E
• MAILING_LISThttps://lists.apache.org/thread.html/r93ca628ef3a4530dfe5ac49fddc795f0920a4b2a408b57a30926a42b%40%3Ccommits.ofbiz.apache.org%3E
• MAILING_LISThttps://lists.apache.org/thread.html/r8f3d416c193bc9384a8a7dd368623d441f5fcaff1057115008100561%40%3Ccommits.ofbiz.apache.org%3E
• MAILING_LISThttps://lists.apache.org/thread.html/r9ad911fe49450ed9405827af0e7a74104041081ff91864b1f2546bbd%40%3Cnotifications.ofbiz.apache.org%3E
• MAILING_LISThttps://lists.apache.org/thread.html/ref0339792ac6dac1dba83c071a727ad72380899bde60f6aaad4031b9%40%3Cnotifications.ofbiz.apache.org%3E
• MAILING_LISThttps://lists.apache.org/thread.html/r6c29801370a36c1a5159679269777ad0c73276d3015b8bbefea66e5c%40%3Cnotifications.ofbiz.apache.org%3E
• MAILING_LISThttps://lists.apache.org/thread.html/r3ea96d8f36dd404acce83df8aeb22a9e807d6c13ca9c5dec72f872cd%40%3Cnotifications.ofbiz.apache.org%3E
• MAILING_LISThttps://lists.debian.org/debian-lts-announce/2020/07/msg00010.html
• VENDOR_ADVISORYhttps://www.debian.org/security/2020/dsa-4727
• MAILING_LISThttp://lists.opensuse.org/opensuse-security-announce/2020-07/msg00064.html
• MAILING_LISThttp://lists.opensuse.org/opensuse-security-announce/2020-07/msg00072.html
• MAILING_LISThttps://lists.apache.org/thread.html/r2529016c311ce9485e6f173446d469600fdfbb94dccadfcd9dfdac79%40%3Cusers.tomcat.apache.org%3E
• VENDOR_ADVISORYhttps://www.oracle.com/security-alerts/cpuoct2020.html
• MISChttps://security.netapp.com/advisory/ntap-20200709-0002/
• VENDOR_ADVISORYhttps://usn.ubuntu.com/4596-1/
• VENDOR_ADVISORYhttps://www.oracle.com/security-alerts/cpujan2021.html
• MAILING_LISThttps://lists.apache.org/thread.html/r5a4f80a6acc6607d61dae424b643b594c6188dd4e1eff04705c10db2%40%3Cnotifications.ofbiz.apache.org%3E