It was possible to craft a malformed chunk size as part of a chucked request that enabled an unlimited amount of data to be streamed to the server, bypassing the various size limits enforced on a request. This enabled a denial of service attack. Versions affected include Apache Tomcat 8.0.0-RC1 to 8.0.3, Apache Tomcat 7.0.0 to 7.0.52, and Apache Tomcat 6.0.0 to 6.0.39.
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