|Description||The refactoring present in Apache Tomcat 9.0.28 to 9.0.30, 8.5.48 to 8.5.50 and 7.0.98 to 7.0.99 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.|
|Source||CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)|
|References||DLA-2133-1, DSA-4673-1, DSA-4680-1|
Vulnerable and fixed packages
The table below lists information on source packages.
|tomcat9 (PTS)||buster, buster (security)||9.0.31-1~deb10u2||fixed|
The information below is based on the following data on fixed versions.
[jessie] - tomcat8 <not-affected> (vulnerable code introduced in later version)
[stretch] - tomcat7 <ignored> (No components in libservlet3.0-java binary package are affected)