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Test your applicationsUpgrade RHEL:7 tomcat-jsvc to version 0:7.0.54-2.el7_1 or higher.
This issue was patched in RHSA-2015:0983.
Note: Versions mentioned in the description apply only to the upstream tomcat-jsvc package and not the tomcat-jsvc package as distributed by RHEL.
See How to fix? for RHEL:7 relevant fixed versions and status.
java/org/apache/coyote/http11/filters/ChunkedInputFilter.java in Apache Tomcat 6.x before 6.0.42, 7.x before 7.0.55, and 8.x before 8.0.9 does not properly handle attempts to continue reading data after an error has occurred, which allows remote attackers to conduct HTTP request smuggling attacks or cause a denial of service (resource consumption) by streaming data with malformed chunked transfer coding.