Description
Apache Tomcat before 6.0.39, 7.x before 7.0.47, and 8.x before 8.0.0-RC3, when an HTTP connector or AJP connector is used, does not properly handle certain inconsistent HTTP request headers, which allows remote attackers to trigger incorrect identification of a request's length and conduct request-smuggling attacks via (1) multiple Content-Length headers or (2) a Content-Length header and a "Transfer-Encoding: chunked" header. NOTE: this vulnerability exists because of an incomplete fix for CVE-2005-2090.
Remediation
References
https://bugzilla.redhat.com/show_bug.cgi?id=1069921
http://svn.apache.org/viewvc?view=revision&revision=1521854
http://tomcat.apache.org/security-6.html
http://tomcat.apache.org/security-8.html
http://tomcat.apache.org/security-7.html
http://svn.apache.org/viewvc?view=revision&revision=1552565
http://svn.apache.org/viewvc?view=revision&revision=1521829
http://rhn.redhat.com/errata/RHSA-2014-0345.html
http://secunia.com/advisories/57675
http://rhn.redhat.com/errata/RHSA-2014-0343.html
http://rhn.redhat.com/errata/RHSA-2014-0344.html
https://rhn.redhat.com/errata/RHSA-2014-0686.html
http://www-01.ibm.com/support/docview.wss?uid=swg21675886
http://secunia.com/advisories/59733
http://secunia.com/advisories/59873
http://secunia.com/advisories/59036
http://secunia.com/advisories/59722
http://www-01.ibm.com/support/docview.wss?uid=swg21677147
http://secunia.com/advisories/59724
http://www-01.ibm.com/support/docview.wss?uid=swg21678231
http://secunia.com/advisories/59675
http://www-01.ibm.com/support/docview.wss?uid=swg21667883
http://www-01.ibm.com/support/docview.wss?uid=swg21678113
http://www.oracle.com/technetwork/topics/security/cpujul2014-1972956.html
http://marc.info/?l=bugtraq&m=141390017113542&w=2
http://www.vmware.com/security/advisories/VMSA-2014-0012.html
http://seclists.org/fulldisclosure/2014/Dec/23
http://www.oracle.com/technetwork/topics/security/cpujan2015-1972971.html
http://www.mandriva.com/security/advisories?name=MDVSA-2015:052
http://advisories.mageia.org/MGASA-2014-0148.html
http://www.oracle.com/technetwork/topics/security/cpuapr2015-2365600.html
http://www.debian.org/security/2016/dsa-3530
http://marc.info/?l=bugtraq&m=144498216801440&w=2
http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html
http://www.securityfocus.com/bid/65773
https://h20564.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04851013
http://www.oracle.com/technetwork/topics/security/cpuoct2014-1972960.html
http://www.ubuntu.com/usn/USN-2130-1
http://www.securityfocus.com/archive/1/534161/100/0/threaded
https://lists.apache.org/thread.html/b8a1bf18155b552dcf9a928ba808cbadad84c236d85eab3033662cfb%40%3Cdev.tomcat.apache.org%3E
https://lists.apache.org/thread.html/39ae1f0bd5867c15755a6f959b271ade1aea04ccdc3b2e639dcd903b%40%3Cdev.tomcat.apache.org%3E
https://lists.apache.org/thread.html/37220405a377c0182d2afdbc36461c4783b2930fbeae3a17f1333113%40%3Cdev.tomcat.apache.org%3E
https://lists.apache.org/thread.html/b84ad1258a89de5c9c853c7f2d3ad77e5b8b2930be9e132d5cef6b95%40%3Cdev.tomcat.apache.org%3E
https://lists.apache.org/thread.html/r03c597a64de790ba42c167efacfa23300c3d6c9fe589ab87fe02859c%40%3Cdev.tomcat.apache.org%3E
https://lists.apache.org/thread.html/r587e50b86c1a96ee301f751d50294072d142fd6dc08a8987ae9f3a9b%40%3Cdev.tomcat.apache.org%3E
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