Apache Tomcat 7.x through 7.0.70 and 8.x through 8.5.4, when the CGI Servlet is enabled, follows RFC 3875 section 4.1.18 and therefore does not protect applications from the presence of untrusted client data in the HTTP_PROXY environment variable, which might allow remote attackers to redirect an application’s outbound HTTP traffic to an arbitrary proxy server via a crafted Proxy header in an HTTP request, aka an “httpoxy” issue. NOTE: the vendor states “A mitigation is planned for future releases of Tomcat, tracked as CVE-2016-5388”; in other words, this is not a CVE ID for a vulnerability.
lists.opensuse.org/opensuse-updates/2016-09/msg00025.html
rhn.redhat.com/errata/RHSA-2016-1624.html
rhn.redhat.com/errata/RHSA-2016-2045.html
rhn.redhat.com/errata/RHSA-2016-2046.html
www.kb.cert.org/vuls/id/797896
www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html
www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html
www.securityfocus.com/bid/91818
www.securitytracker.com/id/1036331
access.redhat.com/errata/RHSA-2016:1635
access.redhat.com/errata/RHSA-2016:1636
h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03770en_us
h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05320149
h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05324759
h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05390722
httpoxy.org/
lists.apache.org/thread.html/053d9ce4d579b02203db18545fee5e33f35f2932885459b74d1e4272%40%3Cissues.activemq.apache.org%3E
lists.apache.org/thread.html/6b414817c2b0bf351138911c8c922ec5dd577ebc0b9a7f42d705752d%40%3Cissues.activemq.apache.org%3E
lists.apache.org/thread.html/6d3d34adcf3dfc48e36342aa1f18ce3c20bb8e4c458a97508d5bfed1%40%3Cissues.activemq.apache.org%3E
lists.apache.org/thread.html/r2853582063cfd9e7fbae1e029ae004e6a83482ae9b70a698996353dd%40%3Cusers.tomcat.apache.org%3E
lists.apache.org/thread.html/rc6b2147532416cc736e68a32678d3947b7053c3085cf43a9874fd102%40%3Cusers.tomcat.apache.org%3E
lists.apache.org/thread.html/rf21b368769ae70de4dee840a3228721ae442f1d51ad8742003aefe39%40%3Cusers.tomcat.apache.org%3E
lists.debian.org/debian-lts-announce/2019/08/msg00015.html
tomcat.apache.org/tomcat-7.0-doc/changelog.html
www.apache.org/security/asf-httpoxy-response.txt