high
7.5
CWE
400
Advisory Published
CVE Published
Advisory Published
Updated

CVE-2020-11996

First published: Thu Jun 25 2020(Updated: )

A specially crafted sequence of HTTP/2 requests 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. Reference: <a href="https://tomcat.apache.org/security-8.html">https://tomcat.apache.org/security-8.html</a>

Credit: security@apache.org security@apache.org

Affected SoftwareAffected VersionHow to fix
redhat/jws5-jboss-logging<0:3.4.1-1.Final_redhat_00001.1.el6
0:3.4.1-1.Final_redhat_00001.1.el6
redhat/jws5-tomcat<0:9.0.36-6.redhat_5.2.el6
0:9.0.36-6.redhat_5.2.el6
redhat/jws5-tomcat-native<0:1.2.25-2.redhat_2.el6
0:1.2.25-2.redhat_2.el6
redhat/jws5-jboss-logging<0:3.4.1-1.Final_redhat_00001.1.el7
0:3.4.1-1.Final_redhat_00001.1.el7
redhat/jws5-tomcat<0:9.0.36-6.redhat_5.2.el7
0:9.0.36-6.redhat_5.2.el7
redhat/jws5-tomcat-native<0:1.2.25-2.redhat_2.el7
0:1.2.25-2.redhat_2.el7
redhat/jws5-jboss-logging<0:3.4.1-1.Final_redhat_00001.1.el8
0:3.4.1-1.Final_redhat_00001.1.el8
redhat/jws5-tomcat<0:9.0.36-6.redhat_5.2.el8
0:9.0.36-6.redhat_5.2.el8
redhat/jws5-tomcat-native<0:1.2.25-2.redhat_2.el8
0:1.2.25-2.redhat_2.el8
maven/org.apache.tomcat:tomcat>=8.5.0<8.5.55
8.5.55
maven/org.apache.tomcat:tomcat>=9.0.0.M1<9.0.35
9.0.35
maven/org.apache.tomcat:tomcat>=10.0.0-M1<=10.0.0-M4
10.0.0-M5
redhat/tomcat<10.0.0
10.0.0
redhat/tomcat<9.0.36
9.0.36
redhat/tomcat<8.5.56
8.5.56
Apache Tomcat>=8.5.0<=8.5.55
Apache Tomcat>=9.0.0<=9.0.35
Apache Tomcat=9.0.0-milestone1
Apache Tomcat=9.0.0-milestone10
Apache Tomcat=9.0.0-milestone11
Apache Tomcat=9.0.0-milestone12
Apache Tomcat=9.0.0-milestone13
Apache Tomcat=9.0.0-milestone14
Apache Tomcat=9.0.0-milestone15
Apache Tomcat=9.0.0-milestone16
Apache Tomcat=9.0.0-milestone17
Apache Tomcat=9.0.0-milestone18
Apache Tomcat=9.0.0-milestone19
Apache Tomcat=9.0.0-milestone2
Apache Tomcat=9.0.0-milestone20
Apache Tomcat=9.0.0-milestone21
Apache Tomcat=9.0.0-milestone22
Apache Tomcat=9.0.0-milestone23
Apache Tomcat=9.0.0-milestone24
Apache Tomcat=9.0.0-milestone25
Apache Tomcat=9.0.0-milestone26
Apache Tomcat=9.0.0-milestone27
Apache Tomcat=9.0.0-milestone3
Apache Tomcat=9.0.0-milestone4
Apache Tomcat=9.0.0-milestone5
Apache Tomcat=9.0.0-milestone6
Apache Tomcat=9.0.0-milestone7
Apache Tomcat=9.0.0-milestone8
Apache Tomcat=9.0.0-milestone9
Apache Tomcat=10.0.0-milestone1
Apache Tomcat=10.0.0-milestone2
Apache Tomcat=10.0.0-milestone3
Apache Tomcat=10.0.0-milestone4
Apache Tomcat=10.0.0-milestone5
Canonical Ubuntu Linux=20.04
Oracle Mysql Enterprise Monitor<=8.0.21
Oracle Siebel Ui Framework<=20.12
Oracle Workload Manager=12.2.0.1
Oracle Workload Manager=18c
Oracle Workload Manager=19c
openSUSE Leap=15.1
openSUSE Leap=15.2
Debian Debian Linux=9.0
Debian Debian Linux=10.0
NetApp OnCommand System Manager=3.0
NetApp OnCommand System Manager=3.1.3
IBM Data Risk Manager<=2.0.6
debian/tomcat9
9.0.43-2~deb11u10
9.0.70-2
9.0.95-1

Remedy

https://lists.apache.org/thread.html/r74f5a8204efe574cbfcd95b2a16236fe95beb45c4d9fee3dc789dca9@%3Ccommits.ofbiz.apache.org%3E

Remedy

https://lists.apache.org/thread.html/r8f3d416c193bc9384a8a7dd368623d441f5fcaff1057115008100561@%3Ccommits.ofbiz.apache.org%3E

Remedy

https://lists.apache.org/thread.html/r93ca628ef3a4530dfe5ac49fddc795f0920a4b2a408b57a30926a42b@%3Ccommits.ofbiz.apache.org%3E

Remedy

https://lists.apache.org/thread.html/rc80b96b4b96618b2b7461cb90664a428cfd6605eea9f74e51b792542@%3Cnotifications.ofbiz.apache.org%3E

Never miss a vulnerability like this again

Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.

Read MoreStart Free Trial

Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is CVE-2020-11996?

    CVE-2020-11996 is a vulnerability in Apache Tomcat that could trigger high CPU usage and make the server unresponsive.

  • How does CVE-2020-11996 impact Apache Tomcat?

    CVE-2020-11996 can cause high CPU usage in Apache Tomcat and make the server unresponsive.

  • Which versions of Apache Tomcat are affected by CVE-2020-11996?

    Apache Tomcat versions 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 are affected by CVE-2020-11996.

  • How severe is CVE-2020-11996?

    CVE-2020-11996 has a severity rating of high.

  • Where can I find more information about CVE-2020-11996?

    You can find more information about CVE-2020-11996 on the Apache Tomcat website.

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2024 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203