Session Fixation The advisory has been revoked - it doesn't affect any version of package tomcat7 (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UBUNTU1804-TOMCAT7-1166874
- published22 Aug 2025
- disclosed23 Dec 2019
Introduced: 23 Dec 2019
CVE-2019-17563 (opens in a new tab)Amendment
The Ubuntu security team deemed this advisory irrelevant for Ubuntu:18.04.
NVD Description
Note: Versions mentioned in the description apply only to the upstream tomcat7 package and not the tomcat7 package as distributed by Ubuntu.
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 exploit to be practical but, erring on the side of caution, this issue has been treated as a security vulnerability.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2019-17563
- https://lists.apache.org/thread.html/8b4c1db8300117b28a0f3f743c0b9e3f964687a690cdf9662a884bbd%40%3Cannounce.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/r3bbb800a816d0a51eccc5a228c58736960a9fffafa581a225834d97d@%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/r48c1444845fe15a823e1374674bfc297d5008a5453788099ea14caf0@%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/r6ccee4e849bc77df0840c7f853f6bd09d426f6741247da2b7429d5d9@%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/r9136ff5b13e4f1941360b5a309efee2c114a14855578c3a2cbe5d19c@%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/raba0fabaf4d56d4325ab2aca8814f0b30a237ab83d8106b115ee279a@%3Cdev.tomcat.apache.org%3E
- https://seclists.org/bugtraq/2019/Dec/43
- https://www.debian.org/security/2020/dsa-4680
- https://www.debian.org/security/2019/dsa-4596
- https://lists.debian.org/debian-lts-announce/2020/01/msg00024.html
- https://security-tracker.debian.org/tracker/CVE-2019-17563
- https://security.gentoo.org/glsa/202003-43
- https://www.oracle.com/security-alerts/cpujan2021.html
- https://www.oracle.com/security-alerts/cpujul2020.html
- https://lists.apache.org/thread.html/reb9a66f176df29b9a832caa95ebd9ffa3284e8f4922ec4fa3ad8eb2e@%3Cissues.cxf.apache.org%3E
- https://lists.debian.org/debian-lts-announce/2020/05/msg00026.html
- https://www.oracle.com/security-alerts/cpuapr2020.html
- https://security.netapp.com/advisory/ntap-20200107-0001/
- http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00013.html
- https://usn.ubuntu.com/4251-1/
- https://lists.apache.org/thread.html/r3bbb800a816d0a51eccc5a228c58736960a9fffafa581a225834d97d%40%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/r48c1444845fe15a823e1374674bfc297d5008a5453788099ea14caf0%40%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/r6ccee4e849bc77df0840c7f853f6bd09d426f6741247da2b7429d5d9%40%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/r9136ff5b13e4f1941360b5a309efee2c114a14855578c3a2cbe5d19c%40%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/raba0fabaf4d56d4325ab2aca8814f0b30a237ab83d8106b115ee279a%40%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/reb9a66f176df29b9a832caa95ebd9ffa3284e8f4922ec4fa3ad8eb2e%40%3Cissues.cxf.apache.org%3E