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Fencer Intel
high 7.5

CVE-2019-17563 in the critical feed json

In Apache Tomcat, when using FORM authentication there was a narrow window where an attacker could perform a session fixation attack

published 6y ago modified last mo. also GHSA-9xcj-c8cr-8c3c , EUVD-2019-0787

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
10.7%
EPSS 10.7% chance of exploitation in 30 days, percentile 95%
public exploits
0
none known

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 exploit to be practical but, erring on the side of caution, this issue has been treated as a security vulnerability.

Patch / fix

  • maven org.apache.tomcat.embed:tomcat-embed-core 7.0.99, 8.5.50, 9.0.30
  • tomcat9 Debian 14, Debian 13, Debian 12 9.0.31-1

debian advisories DEBIAN-CVE-2019-17563

  • tomcat8 Ubuntu 16.04 LTS 8.0.32-1ubuntu1.11

ubuntu advisories UBUNTU-CVE-2019-17563

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • tomcat RHEL 7 7.0.76-15.el7
  • tomcat-lib RHEL 7 7.0.76-15.el7
  • tomcat-jsvc RHEL 7 7.0.76-15.el7
  • tomcat-javadoc RHEL 7 7.0.76-15.el7
  • tomcat-webapps RHEL 7 7.0.76-15.el7
  • tomcat-el-2.2-api RHEL 7 7.0.76-15.el7
  • tomcat-docs-webapp RHEL 7 7.0.76-15.el7
  • tomcat-jsp-2.2-api RHEL 7 7.0.76-15.el7

red hat advisories RHSA-2021:1030RHSA-2021:0882RHSA-2020:4004RHSA-2020:1520RHSA-2020:0861

  • tomcat SLES for SAP 12 SP3, SLES for SAP 12 SP2, SLES 12 SP3-LTSS +8 more 8.0.53-29.27.1
  • tomcat SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES 12 SP5 +1 more 9.0.31-3.25.1
  • tomcat SLE Module for Web and Scripting 15 9.0.30-3.34.1
  • tomcat SLE Module for Web and Scripting 15 SP1 9.0.30-4.10.1
  • tomcat SLES for SAP 12 SP1, SLES 12 SP1-LTSS 8.0.53-10.43.1

suse advisories SUSE-SU-2020:1498-1SUSE-SU-2020:1497-1SUSE-SU-2020:0632-1SUSE-SU-2020:0226-1SUSE-SU-2020:0029-1

  • tomcat openSUSE Tumbleweed 9.0.36-8.4
  • tomcat10 openSUSE Tumbleweed 10.1.14-1.1
  • tomcat openSUSE Leap 15.1 9.0.30-lp151.3.6.1

opensuse advisories openSUSE-SU-2024:11468-1openSUSE-SU-2024:13441-1openSUSE-SU-2020:0038-1

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2019-17563 updated cvss 7.5

tomcat: Session fixation when using FORM authentication

  • Red Hat BPM Suite 6 tomcat Red Hat Enterprise Linux 5 tomcat5 Red Hat Enterprise Linux 6 tomcat6, tomcat6-lib, tomcat6-log4j, tomcat6-javadoc, tomcat6-webapps, tomcat6-el-2.1-api, +4 more
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 8 pki-servlet-engine, pki-servlet-4.0-api
    affected: no fix available “Fix deferred”
  • Red Hat JBoss BRMS 6 tomcat
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux Client (v. 7) tomcat 7.0.76-15.el7, tomcat-servlet-3.0-api 7.0.76-15.el7 Red Hat Enterprise Linux Client Optional (v. 7) tomcat 7.0.76-15.el7, tomcat-lib 7.0.76-15.el7, tomcat-jsvc 7.0.76-15.el7, tomcat-javadoc 7.0.76-15.el7, tomcat-webapps 7.0.76-15.el7, tomcat-el-2.2-api 7.0.76-15.el7, +3 more Red Hat Enterprise Linux ComputeNode (v. 7) tomcat 7.0.76-15.el7, tomcat-servlet-3.0-api 7.0.76-15.el7
    fixed: vendor fix RHSA-2020:4004
  • Red Hat Enterprise Linux ComputeNode EUS (v. 7.6) tomcat 7.0.76-11.el7_6, tomcat-servlet-3.0-api 7.0.76-11.el7_6
    fixed: vendor fix RHSA-2021:0882
  • Red Hat Enterprise Linux ComputeNode EUS (v. 7.7) tomcat 7.0.76-12.el7_7, tomcat-servlet-3.0-api 7.0.76-12.el7_7
    fixed: vendor fix RHSA-2021:1030
  • Red Hat Enterprise Linux ComputeNode Optional (v. 7) tomcat 7.0.76-15.el7, tomcat-lib 7.0.76-15.el7, tomcat-jsvc 7.0.76-15.el7, tomcat-javadoc 7.0.76-15.el7, tomcat-webapps 7.0.76-15.el7, tomcat-el-2.2-api 7.0.76-15.el7, +3 more
    fixed: vendor fix RHSA-2020:4004
  • Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.6) tomcat 7.0.76-11.el7_6, tomcat-lib 7.0.76-11.el7_6, tomcat-jsvc 7.0.76-11.el7_6, tomcat-javadoc 7.0.76-11.el7_6, tomcat-webapps 7.0.76-11.el7_6, tomcat-el-2.2-api 7.0.76-11.el7_6, +3 more
    fixed: vendor fix RHSA-2021:0882
show 14 more
  • Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.7) tomcat 7.0.76-12.el7_7, tomcat-lib 7.0.76-12.el7_7, tomcat-jsvc 7.0.76-12.el7_7, tomcat-javadoc 7.0.76-12.el7_7, tomcat-webapps 7.0.76-12.el7_7, tomcat-el-2.2-api 7.0.76-12.el7_7, +3 more
    fixed: vendor fix RHSA-2021:1030
  • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) tomcat 7.0.76-11.el7_6, tomcat-lib 7.0.76-11.el7_6, tomcat-webapps 7.0.76-11.el7_6, tomcat-el-2.2-api 7.0.76-11.el7_6, tomcat-jsp-2.2-api 7.0.76-11.el7_6, tomcat-admin-webapps 7.0.76-11.el7_6, +1 more Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) tomcat 7.0.76-11.el7_6, tomcat-lib 7.0.76-11.el7_6, tomcat-jsvc 7.0.76-11.el7_6, tomcat-javadoc 7.0.76-11.el7_6, tomcat-webapps 7.0.76-11.el7_6, tomcat-el-2.2-api 7.0.76-11.el7_6, +3 more
    fixed: vendor fix RHSA-2021:0882
  • Red Hat Enterprise Linux Server (v. 7) tomcat 7.0.76-15.el7, tomcat-lib 7.0.76-15.el7, tomcat-webapps 7.0.76-15.el7, tomcat-el-2.2-api 7.0.76-15.el7, tomcat-jsp-2.2-api 7.0.76-15.el7, tomcat-admin-webapps 7.0.76-15.el7, +1 more
    fixed: vendor fix RHSA-2020:4004
  • Red Hat Enterprise Linux Server EUS (v. 7.6) tomcat 7.0.76-11.el7_6, tomcat-lib 7.0.76-11.el7_6, tomcat-webapps 7.0.76-11.el7_6, tomcat-el-2.2-api 7.0.76-11.el7_6, tomcat-jsp-2.2-api 7.0.76-11.el7_6, tomcat-admin-webapps 7.0.76-11.el7_6, +1 more
    fixed: vendor fix RHSA-2021:0882
  • Red Hat Enterprise Linux Server EUS (v. 7.7) tomcat 7.0.76-12.el7_7, tomcat-lib 7.0.76-12.el7_7, tomcat-webapps 7.0.76-12.el7_7, tomcat-el-2.2-api 7.0.76-12.el7_7, tomcat-jsp-2.2-api 7.0.76-12.el7_7, tomcat-admin-webapps 7.0.76-12.el7_7, +1 more
    fixed: vendor fix RHSA-2021:1030
  • Red Hat Enterprise Linux Server Optional (v. 7) tomcat 7.0.76-15.el7, tomcat-lib 7.0.76-15.el7, tomcat-jsvc 7.0.76-15.el7, tomcat-javadoc 7.0.76-15.el7, tomcat-webapps 7.0.76-15.el7, tomcat-el-2.2-api 7.0.76-15.el7, +3 more
    fixed: vendor fix RHSA-2020:4004
  • Red Hat Enterprise Linux Server Optional EUS (v. 7.6) tomcat 7.0.76-11.el7_6, tomcat-lib 7.0.76-11.el7_6, tomcat-jsvc 7.0.76-11.el7_6, tomcat-javadoc 7.0.76-11.el7_6, tomcat-webapps 7.0.76-11.el7_6, tomcat-el-2.2-api 7.0.76-11.el7_6, +3 more
    fixed: vendor fix RHSA-2021:0882
  • Red Hat Enterprise Linux Server Optional EUS (v. 7.7) tomcat 7.0.76-12.el7_7, tomcat-lib 7.0.76-12.el7_7, tomcat-jsvc 7.0.76-12.el7_7, tomcat-javadoc 7.0.76-12.el7_7, tomcat-webapps 7.0.76-12.el7_7, tomcat-el-2.2-api 7.0.76-12.el7_7, +3 more
    fixed: vendor fix RHSA-2021:1030
  • Red Hat Enterprise Linux Workstation (v. 7) tomcat 7.0.76-15.el7, tomcat-lib 7.0.76-15.el7, tomcat-webapps 7.0.76-15.el7, tomcat-el-2.2-api 7.0.76-15.el7, tomcat-jsp-2.2-api 7.0.76-15.el7, tomcat-admin-webapps 7.0.76-15.el7, +1 more Red Hat Enterprise Linux Workstation Optional (v. 7) tomcat-jsvc 7.0.76-15.el7, tomcat-javadoc 7.0.76-15.el7, tomcat-docs-webapp 7.0.76-15.el7
    fixed: vendor fix RHSA-2020:4004
  • Red Hat JBoss Web Server (JWS) 5.3
    fixed: vendor fix RHSA-2020:1521
  • Red Hat JBoss Web Server 3.1
    fixed: vendor fix RHSA-2020:0860
  • Red Hat JBoss Web Server 3.1 for RHEL 6 tomcat7 7.0.70-38.ep7.el6, tomcat8 8.0.36-42.ep7.el6, tomcat7-lib 7.0.70-38.ep7.el6, tomcat8-lib 8.0.36-42.ep7.el6, tomcat7-jsvc 7.0.70-38.ep7.el6, tomcat8-jsvc 8.0.36-42.ep7.el6, +19 more Red Hat JBoss Web Server 3.1 for RHEL 7 tomcat7 7.0.70-38.ep7.el7, tomcat8 8.0.36-42.ep7.el7, tomcat7-lib 7.0.70-38.ep7.el7, tomcat8-lib 8.0.36-42.ep7.el7, tomcat7-jsvc 7.0.70-38.ep7.el7, tomcat8-jsvc 8.0.36-42.ep7.el7, +19 more
    fixed: vendor fix RHSA-2020:0861
  • Red Hat JBoss Web Server 5.3 for RHEL 6 Server jws5-tomcat 9.0.30-3.redhat_4.1.el6jws, jws5-tomcat-lib 9.0.30-3.redhat_4.1.el6jws, jws5-tomcat-native 1.2.23-4.redhat_4.el6jws, jws5-tomcat-javadoc 9.0.30-3.redhat_4.1.el6jws, jws5-tomcat-selinux 9.0.30-3.redhat_4.1.el6jws, jws5-tomcat-webapps 9.0.30-3.redhat_4.1.el6jws, +5 more Red Hat JBoss Web Server 5.3 for RHEL 7 Server jws5-tomcat 9.0.30-3.redhat_4.1.el7jws, jws5-tomcat-lib 9.0.30-3.redhat_4.1.el7jws, jws5-tomcat-native 1.2.23-4.redhat_4.el7jws, jws5-tomcat-javadoc 9.0.30-3.redhat_4.1.el7jws, jws5-tomcat-selinux 9.0.30-3.redhat_4.1.el7jws, jws5-tomcat-webapps 9.0.30-3.redhat_4.1.el7jws, +5 more Red Hat JBoss Web Server 5.3 for RHEL 8 jws5-tomcat 9.0.30-3.redhat_4.1.el8jws, jws5-tomcat-lib 9.0.30-3.redhat_4.1.el8jws, jws5-tomcat-native 1.2.23-4.redhat_4.el8jws, jws5-tomcat-javadoc 9.0.30-3.redhat_4.1.el8jws, jws5-tomcat-selinux 9.0.30-3.redhat_4.1.el8jws, jws5-tomcat-webapps 9.0.30-3.redhat_4.1.el8jws, +5 more
    fixed: vendor fix RHSA-2020:1520
  • Red Hat Fuse 7 tomcat Red Hat JBoss Data Grid 7 tomcat Red Hat JBoss Fuse 6 tomcat Red Hat Software Collections rh-java-common-tomcat-lib, rh-java-common-tomcat-javadoc, rh-java-common-tomcat-el-2.2-api, rh-java-common-tomcat-jsp-2.2-api, rh-java-common-tomcat-servlet-3.0-api
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
last mo.

Exploit prediction

10.69% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 2.0 5.1 AV:N/AC:H/Au:N/C:P/I:P/A:P
GitHub 3.1 7.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
maven org.apache.tomcat.embed:tomcat-embed-core
<7.0.99
>=8.0.0, <8.5.50
>=9.0.0, <9.0.30
7.0.99
8.5.50
9.0.30

Affected products

  • Apache Software Foundation Apache Tomcat

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.