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Fencer Intel
medium 4.3

CVE-2018-11784 json

Apache Tomcat Open Redirect vulnerability

published 2018-10-04 8 y ago modified 2026-10-15 25 d ago also GHSA-5q99-f34m-67gc , EUVD-2018-0512

cvss
4.3
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
97.7%
EPSS 97.7% chance of exploitation in 30 days, percentile 99.9%
public exploits
1
Exploit-DB, plus a Nuclei check

Summary

When the default servlet in Apache Tomcat versions 9.0.0.M1 to 9.0.11, 8.5.0 to 8.5.33 and 7.0.23 to 7.0.90 returned a redirect to a directory (e.g. redirecting to '/foo/' when the user requested '/foo') a specially crafted URL could be used to cause the redirect to be generated to any URI of the attackers choice.

Patch / fix

  • maven org.apache.tomcat.embed:tomcat-embed-core 7.0.91, 8.5.34, 9.0.12
  • tomcat7 Ubuntu 14.04 LTS 7.0.52-1ubuntu0.16
  • tomcat8 Ubuntu 16.04 LTS 8.0.32-1ubuntu1.8
  • tomcat8 Ubuntu 18.04 LTS 8.5.39-1ubuntu1~18.04.1

ubuntu advisories UBUNTU-CVE-2018-11784

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

  • xsom RHEL 8 0-19.20110809svn.module+el8.0.0+3248+9d514f3b
  • slf4j RHEL 8 1.7.25-4.module+el8.0.0+3248+9d514f3b
  • stax-ex RHEL 8 1.7.7-8.module+el8.0.0+3248+9d514f3b
  • bea-stax RHEL 8 1.2.0-16.module+el8.0.0+3248+9d514f3b
  • resteasy RHEL 8 3.0.26-3.module+el8.0.0+3248+9d514f3b
  • velocity RHEL 8 1.7-24.module+el8.0.0+3248+9d514f3b
  • xalan-j2 RHEL 8 2.7.1-38.module+el8.0.0+3248+9d514f3b
  • javassist RHEL 8 3.18.1-8.module+el8.0.0+3248+9d514f3b

red hat advisories RHSA-2019:1529RHSA-2018:2868RHSA-2019:0131RHSA-2019:0485

  • tomcat SLE Module for Web and Scripting 15 9.0.12-3.8.3
  • tomcat6 SLES for SAP 11 SP4, SLES 11 SP4 6.0.53-0.57.10.1
  • tomcat SLES for SAP 12 SP3, SLES 12 SP3 8.0.53-29.16.2
  • tomcat SLES for SAP 12 SP1, SLES 12 SP1-LTSS 8.0.53-10.35.1
  • tomcat SLES 12-LTSS 7.0.90-7.23.1

suse advisories SUSE-SU-2018:3968-1SUSE-SU-2018:3935-1SUSE-SU-2018:3388-1SUSE-SU-2018:3393-1SUSE-SU-2018:3261-1

  • tomcat openSUSE Tumbleweed 9.0.36-8.4
  • virtualbox openSUSE Tumbleweed 6.1.26-3.2
  • tomcat10 openSUSE Tumbleweed 10.1.14-1.1
  • virtualbox openSUSE Leap 15.1, openSUSE Leap 15.0 6.0.10-lp151.2.6.1
  • virtualbox openSUSE Leap 15.0 5.2.24-lp150.4.33.1

opensuse advisories openSUSE-SU-2024:11468-1openSUSE-SU-2024:11501-1openSUSE-SU-2024:13441-1openSUSE-SU-2019:1814-1openSUSE-SU-2019:1547-1

  • xsom AlmaLinux 8 0-19.20110809svn.module_el8.5.0+150+5f0dbea0
  • xsom AlmaLinux 8 0-19.20110809svn.module_el8.5.0+2577+9e95fe00
  • slf4j AlmaLinux 8 1.7.25-4.module_el8.6.0+2752+f1f3449e
  • slf4j AlmaLinux 8 1.7.25-4.module_el8.5.0+2577+9e95fe00
  • stax-ex AlmaLinux 8 1.7.7-8.module_el8.5.0+150+5f0dbea0
  • stax-ex AlmaLinux 8 1.7.7-8.module_el8.5.0+2577+9e95fe00
  • velocity AlmaLinux 8 1.7-24.module_el8.5.0+150+5f0dbea0
  • velocity AlmaLinux 8 1.7-24.module_el8.5.0+2577+9e95fe00

almalinux advisories ALSA-2019:1529

  • xsom Rocky Linux 8 0-19.20110809svn.module+el8.3.0+53+ea062990
  • slf4j Rocky Linux 8 1.7.25-4.module+el8.5.0+697+f586bb30
  • slf4j Rocky Linux 8 1.7.25-4.module+el8.3.0+74+855e3f5d
  • slf4j Rocky Linux 8 1.7.25-4.module+el8.3.0+133+b8b54b58
  • stax-ex Rocky Linux 8 1.7.7-8.module+el8.3.0+53+ea062990
  • bea-stax Rocky Linux 8 1.2.0-16.module+el8.3.0+53+ea062990
  • resteasy Rocky Linux 8 3.0.26-3.module+el8.3.0+53+ea062990
  • velocity Rocky Linux 8 1.7-24.module+el8.3.0+53+ea062990

rocky linux advisories RLSA-2019:1529

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-2018-11784 updated cvss 5.3

tomcat: Open redirect in default servlet

  • Red Hat JBoss Data Grid 6 jbossweb jbossweb Red Hat JBoss Data Virtualization 6 jbossweb jbossweb
    affected: no fix planned “Out of support scope”
  • Red Hat JBoss Enterprise Application Platform 6 jbossweb jbossweb Red Hat JBoss Enterprise Web Server 2 tomcat7 tomcat7
    affected: no fix planned “Will not fix”
  • Red Hat JBoss Fuse 6 tomcat Red Hat JBoss Fuse Service Works 6 jbossweb jbossweb
    affected: no fix planned “Out of support scope”
  • Red Hat JBoss Operations Network 3 jbossweb jbossweb Red Hat OpenShift Application Runtimes tomcat
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux AppStream (v. 8) slf4j 1.7.25-4.module+el8.0.0+3248+9d514f3b, stax-ex 1.7.7-8.module+el8.0.0+3248+9d514f3b, velocity 1.7-24.module+el8.0.0+3248+9d514f3b, bea-stax 1.2.0-16.module+el8.0.0+3248+9d514f3b, resteasy 3.0.26-3.module+el8.0.0+3248+9d514f3b, xalan-j2 2.7.1-38.module+el8.0.0+3248+9d514f3b, +29 more
    fixed: vendor fix RHSA-2019:1529
  • Red Hat Enterprise Linux Client (v. 7) tomcat 7.0.76-9.el7_6, tomcat-servlet-3.0-api 7.0.76-9.el7_6 Red Hat Enterprise Linux Client Optional (v. 7) tomcat 7.0.76-9.el7_6, tomcat-lib 7.0.76-9.el7_6, tomcat-jsvc 7.0.76-9.el7_6, tomcat-javadoc 7.0.76-9.el7_6, tomcat-webapps 7.0.76-9.el7_6, tomcat-el-2.2-api 7.0.76-9.el7_6, +3 more Red Hat Enterprise Linux ComputeNode (v. 7) tomcat 7.0.76-9.el7_6, tomcat-servlet-3.0-api 7.0.76-9.el7_6 Red Hat Enterprise Linux ComputeNode Optional (v. 7) tomcat 7.0.76-9.el7_6, tomcat-lib 7.0.76-9.el7_6, tomcat-jsvc 7.0.76-9.el7_6, tomcat-javadoc 7.0.76-9.el7_6, tomcat-webapps 7.0.76-9.el7_6, tomcat-el-2.2-api 7.0.76-9.el7_6, +3 more Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) tomcat 7.0.76-9.el7_6, tomcat-lib 7.0.76-9.el7_6, tomcat-webapps 7.0.76-9.el7_6, tomcat-el-2.2-api 7.0.76-9.el7_6, tomcat-jsp-2.2-api 7.0.76-9.el7_6, tomcat-admin-webapps 7.0.76-9.el7_6, +1 more Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) tomcat 7.0.76-9.el7_6, tomcat-lib 7.0.76-9.el7_6, tomcat-jsvc 7.0.76-9.el7_6, tomcat-javadoc 7.0.76-9.el7_6, tomcat-webapps 7.0.76-9.el7_6, tomcat-el-2.2-api 7.0.76-9.el7_6, +3 more
    +4 more products
    Red Hat Enterprise Linux Server (v. 7) tomcat 7.0.76-9.el7_6, tomcat-lib 7.0.76-9.el7_6, tomcat-webapps 7.0.76-9.el7_6, tomcat-el-2.2-api 7.0.76-9.el7_6, tomcat-jsp-2.2-api 7.0.76-9.el7_6, tomcat-admin-webapps 7.0.76-9.el7_6, +1 more Red Hat Enterprise Linux Server Optional (v. 7) tomcat 7.0.76-9.el7_6, tomcat-lib 7.0.76-9.el7_6, tomcat-jsvc 7.0.76-9.el7_6, tomcat-javadoc 7.0.76-9.el7_6, tomcat-webapps 7.0.76-9.el7_6, tomcat-el-2.2-api 7.0.76-9.el7_6, +3 more Red Hat Enterprise Linux Workstation (v. 7) tomcat 7.0.76-9.el7_6, tomcat-lib 7.0.76-9.el7_6, tomcat-webapps 7.0.76-9.el7_6, tomcat-el-2.2-api 7.0.76-9.el7_6, tomcat-jsp-2.2-api 7.0.76-9.el7_6, tomcat-admin-webapps 7.0.76-9.el7_6, +1 more Red Hat Enterprise Linux Workstation Optional (v. 7) tomcat-jsvc 7.0.76-9.el7_6, tomcat-javadoc 7.0.76-9.el7_6, tomcat-docs-webapp 7.0.76-9.el7_6
    fixed: vendor fix RHSA-2019:0485
  • Red Hat JBoss Web Server 3.1
    fixed: vendor fix RHSA-2019:0130
  • Red Hat JBoss Web Server 3.1 for RHEL 6 tomcat7 7.0.70-31.ep7.el6, tomcat8 8.0.36-35.ep7.el6, tomcat7-lib 7.0.70-31.ep7.el6, tomcat8-lib 8.0.36-35.ep7.el6, tomcat7-jsvc 7.0.70-31.ep7.el6, tomcat8-jsvc 8.0.36-35.ep7.el6, +19 more Red Hat JBoss Web Server 3.1 for RHEL 7 tomcat7 7.0.70-31.ep7.el7, tomcat8 8.0.36-35.ep7.el7, tomcat7-lib 7.0.70-31.ep7.el7, tomcat8-lib 8.0.36-35.ep7.el7, tomcat7-jsvc 7.0.70-31.ep7.el7, tomcat8-jsvc 8.0.36-35.ep7.el7, +19 more
    fixed: vendor fix RHSA-2019:0131
show 3 more
  • Red Hat JBoss Web Server 5.0
    fixed: vendor fix RHSA-2018:2867
  • Red Hat JBoss Web Server 5.0 for RHEL 6 Server jws5-tomcat 9.0.7-12.redhat_12.1.el6jws, jws5-tomcat-lib 9.0.7-12.redhat_12.1.el6jws, jws5-tomcat-jsvc 9.0.7-12.redhat_12.1.el6jws, jws5-tomcat-javadoc 9.0.7-12.redhat_12.1.el6jws, jws5-tomcat-selinux 9.0.7-12.redhat_12.1.el6jws, jws5-tomcat-webapps 9.0.7-12.redhat_12.1.el6jws, +5 more Red Hat JBoss Web Server 5.0 for RHEL 7 Server jws5-tomcat 9.0.7-12.redhat_12.1.el7jws, jws5-tomcat-lib 9.0.7-12.redhat_12.1.el7jws, jws5-tomcat-jsvc 9.0.7-12.redhat_12.1.el7jws, jws5-tomcat-javadoc 9.0.7-12.redhat_12.1.el7jws, jws5-tomcat-selinux 9.0.7-12.redhat_12.1.el7jws, jws5-tomcat-webapps 9.0.7-12.redhat_12.1.el7jws, +5 more
    fixed: vendor fix RHSA-2018:2868
  • Red Hat BPM Suite 6 tomcat Red Hat Enterprise Linux 6 tomcat6, tomcat6-lib, tomcat6-log4j, tomcat6-javadoc, tomcat6-webapps, tomcat6-el-2.1-api, +4 more Red Hat Fuse 7 tomcat Red Hat JBoss BRMS 5 jbossweb jbossweb Red Hat JBoss BRMS 6 tomcat Red Hat JBoss Data Grid 7 tomcat
    +5 more products
    Red Hat JBoss Enterprise Application Platform 5 jbossweb jbossweb Red Hat JBoss Enterprise Web Server 2 tomcat6, tomcat6-lib, tomcat6-log4j, tomcat6-javadoc, tomcat6-webapps, tomcat6-el-1.0-api, +5 more Red Hat JBoss SOA Platform 5 jbossweb jbossweb Red Hat JBoss Web Server 5 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

Timeline

  1. Published
  2. First public exploit (EDB-50118)

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
17 mo ago

Exploit prediction

97.68% chance of exploitation in the next 30 days, higher than 99.9% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • EDB-50118 Apache Tomcat 9.0.0.M1 - Open Redirect webapps, 2021-07-13
  • Nuclei template Apache Tomcat - Open Redirect nuclei detection template

CVSS scores

assigned by version score vector
NVD 3.0 4.3 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N
GitHub 3.0 4.3 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

Affected packages

ecosystem package affected fixed in
maven org.apache.tomcat.embed:tomcat-embed-core
>=8.5.0, <8.5.34
>=7.0.23, <7.0.91
>=9.0.0, <9.0.12
8.5.34
7.0.91
9.0.12

Affected products

  • Apache Software Foundation Apache Tomcat

Classification

Weakness
  • CWE-601 URL Redirection to Untrusted Site

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.