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GHSA-53hp-jpwq-2jgq

Uncontrolled Resource Consumption in Apache Tomcat

Source: GitHub Advisory Database (reviewed) High CVE-2020-11996

Packages

EcosystemPackageAffectedFixed in
Maven org.apache.tomcat:tomcat >= 10.0.0-M1, < 10.0.0-M5 10.0.0-M5
Maven org.apache.tomcat:tomcat >= 9.0.0.M1, < 9.0.35 9.0.35
Maven org.apache.tomcat:tomcat >= 8.5.0, < 8.5.55 8.5.55
Maven org.apache.tomcat.embed:tomcat-embed-core >= 10.0.0-M1, < 10.0.0-M5 10.0.0-M5
Maven org.apache.tomcat.embed:tomcat-embed-core >= 9.0.0.M1, < 9.0.35 9.0.35
Maven org.apache.tomcat.embed:tomcat-embed-core >= 8.5.0, < 8.5.55 8.5.55

Details

As written in the advisory (Markdown source, shown as plain text).

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.

References

External links from the advisory. They lead to third-party sites.