CVE-2018-8034: Apache Tomcat The Host Name Verification Missing Vulnerability

HIGH
Advisory Identifier: GHSA-46j3-r4pj-4835
Share
CVSS 7.5
CWE-295
Published
Advisory Summary

CVE-2018-8034 is a HIGH (CVSS 7.5) the host name verification missing vulnerability (CWE-295: Improper Certificate Validation) affecting Apache Tomcat libraries in the Maven ecosystem. The issue involves the host name verification missing in apache tomcat. Remediation is available by upgrading affected packages to version 9.0.10, 8.5.32, 8.0.53, 7.0.90.

CVE-2018-8034 at a Glance

CVE Identifier CVE-2018-8034
GHSA Identifier GHSA-46j3-r4pj-4835
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-295: Improper Certificate Validation
Affected Product Apache Tomcat
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2018-8034

To remediate this vulnerability, upgrade all affected Apache Tomcat dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

org.apache.tomcat.embed:tomcat-embed-core fixed: 9.0.10 
<dependency>
    <groupId>org.apache.tomcat.embed</groupId>
    <artifactId>tomcat-embed-core</artifactId>
    <version>9.0.10</version>
</dependency>
org.apache.tomcat.embed:tomcat-embed-core fixed: 8.5.32 
<dependency>
    <groupId>org.apache.tomcat.embed</groupId>
    <artifactId>tomcat-embed-core</artifactId>
    <version>8.5.32</version>
</dependency>
org.apache.tomcat.embed:tomcat-embed-core fixed: 8.0.53 
<dependency>
    <groupId>org.apache.tomcat.embed</groupId>
    <artifactId>tomcat-embed-core</artifactId>
    <version>8.0.53</version>
</dependency>
org.apache.tomcat.embed:tomcat-embed-core fixed: 7.0.90 
<dependency>
    <groupId>org.apache.tomcat.embed</groupId>
    <artifactId>tomcat-embed-core</artifactId>
    <version>7.0.90</version>
</dependency>
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

mvn dependency:tree -Dincludes=org.apache.tomcat.embed

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2018-8034, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=org.apache.tomcat.embed

Analyze the terminal output to locate any version of Apache Tomcat in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 9.0.10), your application is affected.

Note: The mvn dependency:tree -Dincludes=org.apache.tomcat.embed command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-295: Improper Certificate Validation, where the product does not validate, or incorrectly validates, a certificate. In Apache Tomcat, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

The host name verification when using TLS with the WebSocket client was missing. It is now enabled by default. Versions Affected: Apache Tomcat 9.0.0.M1 to 9.0.9, 8.5.0 to 8.5.31, 8.0.0.RC1 to 8.0.52, and 7.0.35 to 7.0.88.

CVE-2018-8034 Affected Apache Tomcat Versions

4 component(s)
Fixed Versions:
9.0.108.5.328.0.537.0.90
Product / Package Ecosystem Affected Versions Fixed Version
org.apache.tomcat.embed:tomcat-embed-core
maven/org.apache.tomcat.embed/tomcat-embed-core
Maven
≥ 9.0.0
< 9.0.10
9.0.10
org.apache.tomcat.embed:tomcat-embed-core
maven/org.apache.tomcat.embed/tomcat-embed-core
Maven
≥ 8.5.0
< 8.5.32
8.5.32
org.apache.tomcat.embed:tomcat-embed-core
maven/org.apache.tomcat.embed/tomcat-embed-core
Maven
≥ 8.0.0
< 8.0.53
8.0.53
org.apache.tomcat.embed:tomcat-embed-core
maven/org.apache.tomcat.embed/tomcat-embed-core
Maven
≥ 7.0.35
< 7.0.90
7.0.90

References

NVD — CVE-2018-8034 NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-8034
Security Fix Commit FIX COMMIT
https://github.com/apache/tomcat/commit/2c522795166c930741a9cecca76797bf48cb1634
Security Fix Commit FIX COMMIT
https://github.com/apache/tomcat/commit/2835bb4e030c1c741ed0847bb3b9c3822e4fbc8a
lists.apache.org/thread.html/r9136ff... WEB
https://lists.apache.org/thread.html/r9136ff5b13e4f1941360b5a309efee2c114a14855578c3a2cbe5d19c%40%3Cdev.tomcat.apache.org%3E
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https://lists.apache.org/thread.html/r6ccee4e849bc77df0840c7f853f6bd09d426f6741247da2b7429d5d9@%3Cdev.tomcat.apache.org%3E
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https://lists.apache.org/thread.html/r48c1444845fe15a823e1374674bfc297d5008a5453788099ea14caf0%40%3Cdev.tomcat.apache.org%3E
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https://lists.apache.org/thread.html/r3bbb800a816d0a51eccc5a228c58736960a9fffafa581a225834d97d%40%3Cdev.tomcat.apache.org%3E
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https://lists.apache.org/thread.html/e85e83e9954f169bbb77b44baae5a33d8de878df557bb32b7f793661@%3Cdev.tomcat.apache.org%3E
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https://lists.apache.org/thread.html/e85e83e9954f169bbb77b44baae5a33d8de878df557bb32b7f793661%40%3Cdev.tomcat.apache.org%3E
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lists.apache.org/thread.html/ac51944... WEB
https://lists.apache.org/thread.html/ac51944aef91dd5006b8510b0bef337adaccfe962fb90e7af9c22db4@%3Cissues.activemq.apache.org%3E
lists.apache.org/thread.html/r9136ff... WEB
https://lists.apache.org/thread.html/r9136ff5b13e4f1941360b5a309efee2c114a14855578c3a2cbe5d19c@%3Cdev.tomcat.apache.org%3E
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https://lists.apache.org/thread.html/raba0fabaf4d56d4325ab2aca8814f0b30a237ab83d8106b115ee279a%40%3Cdev.tomcat.apache.org%3E
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https://lists.apache.org/thread.html/raba0fabaf4d56d4325ab2aca8814f0b30a237ab83d8106b115ee279a@%3Cdev.tomcat.apache.org%3E
lists.debian.org/debian-lts-announce... WEB
https://lists.debian.org/debian-lts-announce/2018/07/msg00047.html
lists.debian.org/debian-lts-announce... WEB
https://lists.debian.org/debian-lts-announce/2018/09/msg00001.html
Apache Tomcat Security Information SECURITY
https://security.netapp.com/advisory/ntap-20180817-0001
usn.ubuntu.com/3723-1 WEB
https://usn.ubuntu.com/3723-1
Apache Tomcat Security Information SECURITY
https://web.archive.org/web/20200227102810/http://www.securityfocus.com/bid/104895
Apache Tomcat Security Information SECURITY
https://web.archive.org/web/20200517032514/http://www.securitytracker.com/id/1041374
Apache Tomcat Security Information SECURITY
https://www.debian.org/security/2018/dsa-4281
Apache Tomcat Security Information SECURITY
https://www.oracle.com/security-alerts/cpuapr2020.html
Apache Tomcat Security Information SECURITY
https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
Apache Tomcat Security Information SECURITY
https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html
Apache Tomcat Security Information SECURITY
https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html
access.redhat.com/errata/rhsa-2019:01... WEB
https://access.redhat.com/errata/RHSA-2019:0130
access.redhat.com/errata/rhsa-2019:01... WEB
https://access.redhat.com/errata/RHSA-2019:0131
access.redhat.com/errata/rhsa-2019:04... WEB
https://access.redhat.com/errata/RHSA-2019:0450
access.redhat.com/errata/rhsa-2019:04... WEB
https://access.redhat.com/errata/RHSA-2019:0451
access.redhat.com/errata/rhsa-2019:11... WEB
https://access.redhat.com/errata/RHSA-2019:1159
access.redhat.com/errata/rhsa-2019:11... WEB
https://access.redhat.com/errata/RHSA-2019:1160
access.redhat.com/errata/rhsa-2019:11... WEB
https://access.redhat.com/errata/RHSA-2019:1161
access.redhat.com/errata/rhsa-2019:11... WEB
https://access.redhat.com/errata/RHSA-2019:1162
access.redhat.com/errata/rhsa-2019:15... WEB
https://access.redhat.com/errata/RHSA-2019:1529
access.redhat.com/errata/rhsa-2019:22... WEB
https://access.redhat.com/errata/RHSA-2019:2205
access.redhat.com/errata/rhsa-2019:38... WEB
https://access.redhat.com/errata/RHSA-2019:3892
Apache Tomcat Source Repository REPOSITORY
https://github.com/apache/tomcat
lists.apache.org/thread.html/1dd0a59... WEB
https://lists.apache.org/thread.html/1dd0a59c1295cc08ce4c9e7edae5ad2268acc9ba55adcefa0532e5ba%40%3Cdev.tomcat.apache.org%3E
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https://lists.apache.org/thread.html/1dd0a59c1295cc08ce4c9e7edae5ad2268acc9ba55adcefa0532e5ba@%3Cdev.tomcat.apache.org%3E
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lists.apache.org/thread.html/8885587... WEB
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lists.apache.org/thread.html/8885587... WEB
https://lists.apache.org/thread.html/88855876c33f2f9c532ffb75bfee570ccf0b17ffa77493745af9a17a@%3Cdev.tomcat.apache.org%3E
lists.apache.org/thread.html/ac51944... WEB
https://lists.apache.org/thread.html/ac51944aef91dd5006b8510b0bef337adaccfe962fb90e7af9c22db4%40%3Cissues.activemq.apache.org%3E
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mail-archives.us.apache.org/mod_mbox/www-announ... WEB
http://mail-archives.us.apache.org/mod_mbox/www-announce/201807.mbox/%3C20180722091057.GA70283@minotaur.apache.org%3E
Apache Tomcat Security Information SECURITY
http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html
Apache Tomcat Security Information SECURITY
http://www.securityfocus.com/bid/104895
Apache Tomcat Security Information SECURITY
http://www.securitytracker.com/id/1041374

Frequently Asked Questions

What is CVE-2018-8034?
CVE-2018-8034 is a security vulnerability in Apache Tomcat involving The host name verification missing in Apache Tomcat under CWE-295: Improper Certificate Validation.
Which Apache Tomcat versions are affected?
Affected versions include releases prior to 9.0.10, 8.5.32, 8.0.53, 7.0.90 across affected packages: org.apache.tomcat.embed:tomcat-embed-core.
What version fixes CVE-2018-8034?
Upgrading to 9.0.10, 8.5.32, 8.0.53, 7.0.90 (or the latest patched release for your respective branch) resolves the vulnerability.
Is tomcat-embed-core affected?
Yes, org.apache.tomcat.embed:tomcat-embed-core is affected in releases prior to 9.0.10, 8.5.32, 8.0.53, 7.0.90. Upgrade your dependency to 9.0.10, 8.5.32, 8.0.53, 7.0.90 or later.
What is the CVSS score of CVE-2018-8034?
CVE-2018-8034 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
What CWE is associated with CVE-2018-8034?
CVE-2018-8034 is classified under CWE-295: Improper Certificate Validation (The product does not validate, or incorrectly validates, a certificate.).
How can I check Maven dependencies for CVE-2018-8034?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=org.apache.tomcat.embed'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-46j3-r4pj-4835",
  "modified" : "2024-10-21T19:06:46Z",
  "published" : "2018-10-17T16:32:43Z",
  "aliases" : [ "CVE-2018-8034" ],
  "summary" : "The host name verification missing in Apache Tomcat",
  "details" : "The host name verification when using TLS with the WebSocket client was missing. It is now enabled by default. Versions Affected: Apache Tomcat 9.0.0.M1 to 9.0.9, 8.5.0 to 8.5.31, 8.0.0.RC1 to 8.0.52, and 7.0.35 to 7.0.88.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
  } ],
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    "database_specific" : {
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  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2018-8034"
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  }, {
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  "database_specific" : {
    "cwe_ids" : [ "CWE-295" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2020-06-16T20:57:40Z",
    "nvd_published_at" : "2018-08-01T18:29:00Z"
  }
}