{"id":"CVE-2016-5388","description":"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.","cvssScore":8.1,"cvssVersion":"3.0","cvssVector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","cvssMetrics":[{"version":"3.0","score":8.1,"severity":"HIGH","vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","source":"nvd@nist.gov","sourceName":"NVD","type":"Primary"},{"version":"2.0","score":5.1,"vector":"AV:N/AC:H/Au:N/C:P/I:P/A:P","source":"nvd@nist.gov","sourceName":"NVD","type":"Primary"}],"cwes":["CWE-284"],"resolved":"NO-EXPLOIT-PUBLISHED","published":"2016-07-19","lastModified":"2026-06-17","affectedProducts":[{"vendor":"redhat","product":"enterprise linux desktop","version":"7.0"},{"vendor":"redhat","product":"enterprise linux hpc node","version":"7.0"},{"vendor":"redhat","product":"enterprise linux hpc node eus","version":"7.2"},{"vendor":"redhat","product":"enterprise linux server","version":"7.0"},{"vendor":"redhat","product":"enterprise linux server aus","version":"7.2"},{"vendor":"redhat","product":"enterprise linux server eus","version":"7.2"},{"vendor":"redhat","product":"enterprise linux server tus","version":"7.2"},{"vendor":"redhat","product":"enterprise linux workstation","version":"7.0"},{"vendor":"hp","product":"system management homepage","versionEnd":"\u003c=7.5.5.0"},{"vendor":"redhat","product":"enterprise linux desktop","version":"6.0"},{"vendor":"redhat","product":"enterprise linux hpc node","version":"6.0"},{"vendor":"redhat","product":"enterprise linux server","version":"6.0"},{"vendor":"redhat","product":"enterprise linux workstation","version":"6.0"},{"vendor":"oracle","product":"linux","version":"6"},{"vendor":"oracle","product":"linux","version":"7"},{"vendor":"apache","product":"tomcat","versionStart":"\u003e=6.0","versionEnd":"\u003c=6.0.45"},{"vendor":"apache","product":"tomcat","versionStart":"\u003e=7.0","versionEnd":"\u003c=7.0.70"},{"vendor":"apache","product":"tomcat","versionStart":"\u003e=8.0","versionEnd":"\u003c=8.5.4"}],"totalAffectedProducts":11,"references":[{"url":"https://github.com/apache/tomcat/commit/1b91e91194a095ea922f96d1dccddf6fbc446e54","source":"osv","tags":["WEB"]},{"url":"https://github.com/apache/tomcat/commit/880250877b0643956435282afb9c111450cfff4c","source":"osv","tags":["WEB"]},{"url":"https://github.com/apache/tomcat/commit/fb3569fbb9a2f55459aa8e1e22bc35a737e66329","source":"osv","tags":["WEB"]},{"url":"https://access.redhat.com/errata/RHSA-2016:1624","source":"osv","tags":["WEB"]},{"url":"https://lists.apache.org/thread.html/6d3d34adcf3dfc48e36342aa1f18ce3c20bb8e4c458a97508d5bfed1@%3Cissues.activemq.apache.org%3E","source":"osv","tags":["WEB"]},{"url":"https://lists.apache.org/thread.html/r2853582063cfd9e7fbae1e029ae004e6a83482ae9b70a698996353dd%40%3Cusers.tomcat.apache.org%3E","source":"osv","tags":["WEB"]},{"url":"https://lists.apache.org/thread.html/r2853582063cfd9e7fbae1e029ae004e6a83482ae9b70a698996353dd@%3Cusers.tomcat.apache.org%3E","source":"osv","tags":["WEB"]},{"url":"https://lists.apache.org/thread.html/rc6b2147532416cc736e68a32678d3947b7053c3085cf43a9874fd102%40%3Cusers.tomcat.apache.org%3E","source":"osv","tags":["WEB"]},{"url":"https://lists.apache.org/thread.html/rc6b2147532416cc736e68a32678d3947b7053c3085cf43a9874fd102@%3Cusers.tomcat.apache.org%3E","source":"osv","tags":["WEB"]},{"url":"https://lists.apache.org/thread.html/rf21b368769ae70de4dee840a3228721ae442f1d51ad8742003aefe39%40%3Cusers.tomcat.apache.org%3E","source":"osv","tags":["WEB"]}],"reasoning":{"decidingSource":"no-exploit-published","decidingReason":"This CVE is not listed in CISA KEV, CISA Vulnrichment records no active exploitation, and no reviewed exploit catalogue carries an entry for it. Nobody has published something a stranger can run, so it is not a candidate for a rule ahead of the ones where somebody has; an upstream fix path does exist, so the remediation half of the candidacy still holds. This is a statement about what has been published, not about whether the defect is reachable or serious.","verdicts":[{"rule":"rejected","stage":"identity","outcome":"no-match"},{"rule":"armr-patch-file","stage":"scope","outcome":"no-match"},{"rule":"armr-secure-rule-file","stage":"scope","outcome":"no-match"},{"rule":"manual-classification","stage":"scope","outcome":"no-match"},{"rule":"h2-history","stage":"scope","outcome":"no-match"},{"rule":"non-java-upstream","stage":"scope","outcome":"no-match"},{"rule":"oracle-component","stage":"scope","outcome":"no-match"},{"rule":"osv-maven","stage":"scope","outcome":"matched","status":"QUEUED-FOR-REVIEW","detail":"Maven packages: org.apache.tomcat:tomcat-catalina"},{"rule":"patch-hint","stage":"disposition","outcome":"no-match"},{"rule":"open-source-maven","stage":"disposition","outcome":"matched","status":"MITIGATION-CANDIDATE","detail":"Open-source Maven artifact indexed by OSV (Maven packages: org.apache.tomcat:tomcat-catalina). The source is public, which makes an ARMR patch rule a candidate; nothing here establishes that one can be written."},{"rule":"poc-derivable","stage":"disposition","outcome":"skipped"},{"rule":"no-exploit","stage":"disposition","outcome":"skipped"},{"rule":"secure-rule-match","stage":"disposition","outcome":"no-match"},{"rule":"below-action-threshold","stage":"disposition","outcome":"no-match","detail":"Severity is HIGH — only MEDIUM/LOW are deprioritized"},{"rule":"no-exploit-published","stage":"disposition","outcome":"matched","status":"NO-EXPLOIT-PUBLISHED","detail":"No working exploit has been published, and an upstream fix path does exist, so the remediation half of the candidacy still holds.","decisive":true}],"affectedProducts":[{"vendor":"redhat","product":"enterprise_linux_desktop","isKnown":false,"cpe":"cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*"},{"vendor":"redhat","product":"enterprise_linux_hpc_node","isKnown":false,"cpe":"cpe:2.3:o:redhat:enterprise_linux_hpc_node:7.0:*:*:*:*:*:*:*"},{"vendor":"redhat","product":"enterprise_linux_hpc_node_eus","isKnown":false,"cpe":"cpe:2.3:o:redhat:enterprise_linux_hpc_node_eus:7.2:*:*:*:*:*:*:*"},{"vendor":"redhat","product":"enterprise_linux_server","isKnown":false,"cpe":"cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*"},{"vendor":"redhat","product":"enterprise_linux_server_aus","isKnown":false,"cpe":"cpe:2.3:o:redhat:enterprise_linux_server_aus:7.2:*:*:*:*:*:*:*"},{"vendor":"redhat","product":"enterprise_linux_server_eus","isKnown":false,"cpe":"cpe:2.3:o:redhat:enterprise_linux_server_eus:7.2:*:*:*:*:*:*:*"},{"vendor":"redhat","product":"enterprise_linux_server_tus","isKnown":false,"cpe":"cpe:2.3:o:redhat:enterprise_linux_server_tus:7.2:*:*:*:*:*:*:*"},{"vendor":"redhat","product":"enterprise_linux_workstation","isKnown":false,"cpe":"cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*"},{"vendor":"hp","product":"system_management_homepage","isKnown":false,"cpe":"cpe:2.3:a:hp:system_management_homepage:*:*:*:*:*:*:*:*"},{"vendor":"oracle","product":"linux","isKnown":false,"cpe":"cpe:2.3:o:oracle:linux:6:*:*:*:*:*:*:*"},{"vendor":"apache","product":"tomcat","isKnown":true,"cpe":"cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*","source":"yaml"}],"affectedPackages":[{"name":"org.apache.tomcat:tomcat-catalina","introduced":"7.0.0","fixed":"7.0.72"},{"name":"org.apache.tomcat:tomcat-catalina","introduced":"8.0.0","fixed":"8.5.5"}]},"assessment":{"record":{"state":"active"},"protection":{"level":"none"},"action":{"state":"unverified","type":"patch-rule"},"review":{"state":"automated","basis":"upstream-data"}},"signals":{"hasPOC":false,"pocCount":0},"kev":{"inKEV":false},"epss":{"available":true,"score":0.50896,"percentile":0.98863},"ssvc":{"available":false}}