{"id":"CVE-2016-0762","title":"The Realm implementations in Apache Tomcat versions 9.0.0.M1 to 9.0.0.M9, 8.5.0 to 8.5.4, 8.0.0.RC1 to 8.0.36, 7.0.0 to 7.0.70 and 6.0.0 to 6.0.45 did not process the supplied password if the supplied user name did not exist","summary":"The Realm implementations in Apache Tomcat versions 9.0.0.M1 to 9.0.0.M9, 8.5.0 to 8.5.4, 8.0.0.RC1 to 8.0.36, 7.0.0 to 7.0.70 and 6.0.0 to 6.0.45 did not process the supplied password if the supplied user name did not exist. This made a…","severity":"medium","cvss":5.9,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","cwe":["CWE-203"],"vendor":"apache","product":"tomcat","affected":["tomcat >= 6.0.0, <= 6.0.45","tomcat >= 7.0.0, <= 7.0.70","tomcat >= 8.0, <= 8.0.36","tomcat >= 8.5.0, <= 8.5.4","tomcat = 9.0.0","ubuntu_linux = 16.04","debian_linux = 8.0","jboss_enterprise_web_server = 3.0.0","enterprise_linux_desktop = 7.0","enterprise_linux_eus = 7.4","enterprise_linux_eus = 7.5","enterprise_linux_eus = 7.6","enterprise_linux_eus = 7.7","enterprise_linux_server = 7.0","enterprise_linux_server_aus = 7.4","enterprise_linux_server_aus = 7.6","enterprise_linux_server_aus = 7.7","enterprise_linux_server_tus = 7.6","enterprise_linux_server_tus = 7.7","enterprise_linux_workstation = 7.0","oncommand_insight","oncommand_shift","snap_creator_framework","communications_diameter_signaling_router >= 8.0.0, <= 8.5.0","tekelec_platform_distribution >= 7.4.0, <= 7.7.1"],"published":"2017-08-10","updated":"2026-10-08","sourceUpdated":"2026-10-08T22:16:38.120","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2016-0762","references":[{"url":"http://rhn.redhat.com/errata/RHSA-2017-0457.html","label":"security@apache.org"},{"url":"http://www.debian.org/security/2016/dsa-3720","label":"security@apache.org"},{"url":"http://www.securityfocus.com/bid/93939","label":"security@apache.org"},{"url":"http://www.securitytracker.com/id/1037144","label":"security@apache.org"},{"url":"https://access.redhat.com/errata/RHSA-2017:0455","label":"security@apache.org"},{"url":"https://access.redhat.com/errata/RHSA-2017:0456","label":"security@apache.org"},{"url":"https://access.redhat.com/errata/RHSA-2017:2247","label":"security@apache.org"},{"url":"https://lists.apache.org/thread.html/1872f96bad43647832bdd84a408794cd06d9cbb557af63085ca10009%40%3Cannounce.tomcat.apache.org%3E","label":"security@apache.org"},{"url":"https://lists.apache.org/thread.html/343558d982879bf88ec20dbf707f8c11255f8e219e81d45c4f8d0551%40%3Cdev.tomcat.apache.org%3E","label":"security@apache.org"},{"url":"https://lists.apache.org/thread.html/37220405a377c0182d2afdbc36461c4783b2930fbeae3a17f1333113%40%3Cdev.tomcat.apache.org%3E","label":"security@apache.org"},{"url":"https://lists.apache.org/thread.html/388a323769f1dff84c9ec905455aa73fbcb20338e3c7eb131457f708%40%3Cdev.tomcat.apache.org%3E","label":"security@apache.org"},{"url":"https://lists.apache.org/thread.html/39ae1f0bd5867c15755a6f959b271ade1aea04ccdc3b2e639dcd903b%40%3Cdev.tomcat.apache.org%3E","label":"security@apache.org"},{"url":"https://lists.apache.org/thread.html/3d19773b4cf0377db62d1e9328bf9160bf1819f04f988315086931d7%40%3Cdev.tomcat.apache.org%3E","label":"security@apache.org"},{"url":"https://lists.apache.org/thread.html/845312a10aabbe2c499fca94003881d2c79fc993d85f34c1f5c77424%40%3Cdev.tomcat.apache.org%3E","label":"security@apache.org"},{"url":"https://lists.apache.org/thread.html/b5e3f51d28cd5d9b1809f56594f2cf63dcd6a90429e16ea9f83bbedc%40%3Cdev.tomcat.apache.org%3E","label":"security@apache.org"},{"url":"https://lists.apache.org/thread.html/b84ad1258a89de5c9c853c7f2d3ad77e5b8b2930be9e132d5cef6b95%40%3Cdev.tomcat.apache.org%3E","label":"security@apache.org"},{"url":"https://lists.apache.org/thread.html/b8a1bf18155b552dcf9a928ba808cbadad84c236d85eab3033662cfb%40%3Cdev.tomcat.apache.org%3E","label":"security@apache.org"},{"url":"https://lists.apache.org/thread.html/r03c597a64de790ba42c167efacfa23300c3d6c9fe589ab87fe02859c%40%3Cdev.tomcat.apache.org%3E","label":"security@apache.org"},{"url":"https://lists.apache.org/thread.html/r587e50b86c1a96ee301f751d50294072d142fd6dc08a8987ae9f3a9b%40%3Cdev.tomcat.apache.org%3E","label":"security@apache.org"},{"url":"https://lists.apache.org/thread.html/r9136ff5b13e4f1941360b5a309efee2c114a14855578c3a2cbe5d19c%40%3Cdev.tomcat.apache.org%3E","label":"security@apache.org"},{"url":"https://security.netapp.com/advisory/ntap-20180605-0001/","label":"security@apache.org"},{"url":"https://usn.ubuntu.com/4557-1/","label":"security@apache.org"},{"url":"https://www.oracle.com//security-alerts/cpujul2021.html","label":"security@apache.org"},{"url":"https://www.oracle.com/security-alerts/cpuoct2021.html","label":"security@apache.org"},{"url":"http://rhn.redhat.com/errata/RHSA-2017-0457.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.debian.org/security/2016/dsa-3720","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/93939","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securitytracker.com/id/1037144","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2017:0455","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2017:0456","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2017:2247","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.apache.org/thread.html/1872f96bad43647832bdd84a408794cd06d9cbb557af63085ca10009%40%3Cannounce.tomcat.apache.org%3E","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.apache.org/thread.html/343558d982879bf88ec20dbf707f8c11255f8e219e81d45c4f8d0551%40%3Cdev.tomcat.apache.org%3E","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.apache.org/thread.html/37220405a377c0182d2afdbc36461c4783b2930fbeae3a17f1333113%40%3Cdev.tomcat.apache.org%3E","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.apache.org/thread.html/388a323769f1dff84c9ec905455aa73fbcb20338e3c7eb131457f708%40%3Cdev.tomcat.apache.org%3E","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.apache.org/thread.html/39ae1f0bd5867c15755a6f959b271ade1aea04ccdc3b2e639dcd903b%40%3Cdev.tomcat.apache.org%3E","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.apache.org/thread.html/3d19773b4cf0377db62d1e9328bf9160bf1819f04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Overview\n\nThe Realm implementations in Apache Tomcat versions 9.0.0.M1 to 9.0.0.M9, 8.5.0 to 8.5.4, 8.0.0.RC1 to 8.0.36, 7.0.0 to 7.0.70 and 6.0.0 to 6.0.45 did not process the supplied password if the supplied user name did not exist. This made a timing attack possible to determine valid user names. Note that the default configuration includes the LockOutRealm which makes exploitation of this vulnerability harder.\n\n## Affected\n\n- `tomcat >= 6.0.0, <= 6.0.45`\n- `tomcat >= 7.0.0, <= 7.0.70`\n- `tomcat >= 8.0, <= 8.0.36`\n- `tomcat >= 8.5.0, <= 8.5.4`\n- `tomcat = 9.0.0`\n- `ubuntu_linux = 16.04`\n- `debian_linux = 8.0`\n- `jboss_enterprise_web_server = 3.0.0`\n- `enterprise_linux_desktop = 7.0`\n- `enterprise_linux_eus = 7.4`\n- `enterprise_linux_eus = 7.5`\n- `enterprise_linux_eus = 7.6`\n- `enterprise_linux_eus = 7.7`\n- `enterprise_linux_server = 7.0`\n- `enterprise_linux_server_aus = 7.4`\n- `enterprise_linux_server_aus = 7.6`\n- `enterprise_linux_server_aus = 7.7`\n- `enterprise_linux_server_tus = 7.6`\n- `enterprise_linux_server_tus = 7.7`\n- `enterprise_linux_workstation = 7.0`\n- `oncommand_insight`\n- `oncommand_shift`\n- `snap_creator_framework`\n- `communications_diameter_signaling_router >= 8.0.0, <= 8.5.0`\n- `tekelec_platform_distribution >= 7.4.0, <= 7.7.1`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":34,"depthScoreParts":{"impact":32.5,"likelihood":1.6,"exploitation":0,"ransomware":0},"changes":[]}