CVE-2019-17569 HTTP Request Smuggling Severity: Low
Vendor: The Apache Software Foundation Versions Affected: Apache Tomcat 9.0.28 to 9.0.30 Apache Tomcat 8.5.48 to 8.5.50 Apache Tomcat 7.0.98 to 7.0.99 Description: The refactoring in 9.0.28, 8.5.48 and 7.0.98 introduced a regression. The result of the regression was that invalid Transfer-Encoding headers were incorrectly processed leading to a possibility of HTTP Request Smuggling if Tomcat was located behind a reverse proxy that incorrectly handled the invalid Transfer-Encoding header in a particular manner. Such a reverse proxy is considered unlikely. Mitigation: - Upgrade to Apache Tomcat 9.0.31 or later - Upgrade to Apache Tomcat 8.5.51 or later - Upgrade to Apache Tomcat 7.0.100 or later Credit: This issue was found by @ZeddYu and reported responsibly to the Apache Tomcat Security Team. References: [1] http://tomcat.apache.org/security-9.html [2] http://tomcat.apache.org/security-8.html [3] http://tomcat.apache.org/security-7.html --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@tomcat.apache.org For additional commands, e-mail: dev-h...@tomcat.apache.org