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Apache Tomcat: Important: HTTP/2 DoS (CVE-2020-11996)

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Apache Tomcat: Important: HTTP/2 DoS (CVE-2020-11996)

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:P)
Published
06/26/2020
Created
06/27/2020
Added
06/26/2020
Modified
07/21/2020

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.

Solution(s)

  • apache-tomcat-upgrade-8_5_56
  • apache-tomcat-upgrade-9_0_36

References

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