CVE-2020-1935 HTTP Request Smuggling Severity: Low
Vendor: The Apache Software Foundation Versions Affected: Apache Tomcat 9.0.0.M1 to 9.0.30 Apache Tomcat 8.5.0 to 8.5.50 Apache Tomcat 7.0.0 to 7.0.99 Description: The HTTP header parsing code used an approach to end-of-line parsing that allowed some invalid HTTP headers to be parsed as valid. This led 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
