{"id":"CVE-2019-17563","title":"When using FORM authentication with Apache Tomcat 9.0.0.M1 to 9.0.29, 8.5.0 to 8.5.49 and 7.0.0 to 7.0.98 there was a narrow window where an attacker could perform a session fixation attack","summary":"When using FORM authentication with Apache Tomcat 9.0.0.M1 to 9.0.29, 8.5.0 to 8.5.49 and 7.0.0 to 7.0.98 there was a narrow window where an attacker could perform a session fixation attack. The window was considered too narrow for an ex…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","cwe":["CWE-384"],"vendor":"apache","product":"tomcat","affected":["tomcat >= 7.0.0, <= 7.0.98","tomcat >= 8.5.0, <= 8.5.49","tomcat >= 9.0.0, <= 9.0.29","debian_linux = 8.0","debian_linux = 9.0","debian_linux = 10.0","leap = 15.1","ubuntu_linux = 16.04","agile_engineering_data_management = 6.2.1.0","hyperion_infrastructure_technology = 11.1.2.4","instantis_enterprisetrack >= 17.1, <= 17.3","micros_relate_crm_software = 11.4","mysql_enterprise_monitor <= 4.0.11.5331","mysql_enterprise_monitor >= 8.0.0, <= 8.0.18.1217","retail_order_broker = 15.0","transportation_management = 6.3.7"],"published":"2019-12-23","updated":"2026-10-08","sourceUpdated":"2026-10-08T21:17:17.253","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2019-17563","references":[{"url":"http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00013.html","label":"security@apache.org"},{"url":"https://lists.apache.org/thread.html/8b4c1db8300117b28a0f3f743c0b9e3f964687a690cdf9662a884bbd%40%3Cannounce.tomcat.apache.org%3E","label":"security@apache.org"},{"url":"https://lists.apache.org/thread.html/r3bbb800a816d0a51eccc5a228c58736960a9fffafa581a225834d97d%40%3Cdev.tomcat.apache.org%3E","label":"security@apache.org"},{"url":"https://lists.apache.org/thread.html/r48c1444845fe15a823e1374674bfc297d5008a5453788099ea14caf0%40%3Cdev.tomcat.apache.org%3E","label":"security@apache.org"},{"url":"https://lists.apache.org/thread.html/r6ccee4e849bc77df0840c7f853f6bd09d426f6741247da2b7429d5d9%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://lists.apache.org/thread.html/raba0fabaf4d56d4325ab2aca8814f0b30a237ab83d8106b115ee279a%40%3Cdev.tomcat.apache.org%3E","label":"security@apache.org"},{"url":"https://lists.apache.org/thread.html/reb9a66f176df29b9a832caa95ebd9ffa3284e8f4922ec4fa3ad8eb2e%40%3Cissues.cxf.apache.org%3E","label":"security@apache.org"},{"url":"https://lists.debian.org/debian-lts-announce/2020/01/msg00024.html","label":"security@apache.org"},{"url":"https://lists.debian.org/debian-lts-announce/2020/05/msg00026.html","label":"security@apache.org"},{"url":"https://seclists.org/bugtraq/2019/Dec/43","label":"security@apache.org"},{"url":"https://security.gentoo.org/glsa/202003-43","label":"security@apache.org"},{"url":"https://security.netapp.com/advisory/ntap-20200107-0001/","label":"security@apache.org"},{"url":"https://usn.ubuntu.com/4251-1/","label":"security@apache.org"},{"url":"https://www.debian.org/security/2019/dsa-4596","label":"security@apache.org"},{"url":"https://www.debian.org/security/2020/dsa-4680","label":"security@apache.org"},{"url":"https://www.oracle.com/security-alerts/cpuapr2020.html","label":"security@apache.org"},{"url":"https://www.oracle.com/security-alerts/cpujan2021.html","label":"security@apache.org"},{"url":"https://www.oracle.com/security-alerts/cpujul2020.html","label":"security@apache.org"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00013.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.apache.org/thread.html/8b4c1db8300117b28a0f3f743c0b9e3f964687a690cdf9662a884bbd%40%3Cannounce.tomcat.apache.org%3E","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.apache.org/thread.html/r3bbb800a816d0a51eccc5a228c58736960a9fffafa581a225834d97d%40%3Cdev.tomcat.apache.org%3E","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.apache.org/thread.html/r48c1444845fe15a823e1374674bfc297d5008a5453788099ea14caf0%40%3Cdev.tomcat.apache.org%3E","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.apache.org/thread.html/r6ccee4e849bc77df0840c7f853f6bd09d426f6741247da2b7429d5d9%40%3Cdev.tomcat.apache.org%3E","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.apache.org/thread.html/r9136ff5b13e4f1941360b5a309efee2c114a14855578c3a2cbe5d19c%40%3Cdev.tomcat.apache.org%3E","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.apache.org/thread.html/raba0fabaf4d56d4325ab2aca8814f0b30a237ab83d8106b115ee279a%40%3Cdev.tomcat.apache.org%3E","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.apache.org/thread.html/reb9a66f176df29b9a832caa95ebd9ffa3284e8f4922ec4fa3ad8eb2e%40%3Cissues.cxf.apache.org%3E","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2020/01/msg00024.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2020/05/msg00026.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://seclists.org/bugtraq/2019/Dec/43","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.gentoo.org/glsa/202003-43","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.netapp.com/advisory/ntap-20200107-0001/","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://usn.ubuntu.com/4251-1/","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.debian.org/security/2019/dsa-4596","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.debian.org/security/2020/dsa-4680","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.oracle.com/security-alerts/cpuapr2020.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.oracle.com/security-alerts/cpujan2021.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.oracle.com/security-alerts/cpujul2020.html","label":"af854a3a-2127-422b-91ae-364da2661108"}],"tags":["nvd"],"epss":0.10687,"epssPercentile":0.95707,"ingestedAt":"2026-10-08T22:11:53.708Z","slug":"CVE-2019-17563","body":"## Overview\n\nWhen using FORM authentication with Apache Tomcat 9.0.0.M1 to 9.0.29, 8.5.0 to 8.5.49 and 7.0.0 to 7.0.98 there was a narrow window where an attacker could perform a session fixation attack. The window was considered too narrow for an exploit to be practical but, erring on the side of caution, this issue has been treated as a security vulnerability.\n\n## Affected\n\n- `tomcat >= 7.0.0, <= 7.0.98`\n- `tomcat >= 8.5.0, <= 8.5.49`\n- `tomcat >= 9.0.0, <= 9.0.29`\n- `debian_linux = 8.0`\n- `debian_linux = 9.0`\n- `debian_linux = 10.0`\n- `leap = 15.1`\n- `ubuntu_linux = 16.04`\n- `agile_engineering_data_management = 6.2.1.0`\n- `hyperion_infrastructure_technology = 11.1.2.4`\n- `instantis_enterprisetrack >= 17.1, <= 17.3`\n- `micros_relate_crm_software = 11.4`\n- `mysql_enterprise_monitor <= 4.0.11.5331`\n- `mysql_enterprise_monitor >= 8.0.0, <= 8.0.18.1217`\n- `retail_order_broker = 15.0`\n- `transportation_management = 6.3.7`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":41.3,"likelihood":2.1,"exploitation":0,"ransomware":0},"changes":[]}