1. Ubuntu Security Notices
  2. USN-3723-1

USN-3723-1: Tomcat vulnerabilities

Publication date

25 July 2018

Overview

Several security issues were fixed in Tomcat.

Releases

Packages

Details

It was discovered that Tomcat incorrectly handled decoding certain
UTF-8 strings. A remote attacker could possibly use this issue to cause
Tomcat to crash, resulting in a denial of service. (CVE-2018-1336)

It was discovered that the Tomcat WebSocket client incorrectly performed
hostname verification. A remote attacker could possibly use this issue to
intercept sensitive information. (CVE-2018-8034)

It was discovered that Tomcat incorrectly handled decoding certain
UTF-8 strings. A remote attacker could possibly use this issue to cause
Tomcat to crash, resulting in a denial of service. (CVE-2018-1336)

It was discovered that the Tomcat WebSocket client incorrectly performed
hostname verification. A remote attacker could possibly use this issue to
intercept sensitive information. (CVE-2018-8034)

Update instructions

In general, a standard system update will make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
16.04 xenial libtomcat8-java –  8.0.32-1ubuntu1.7
tomcat8 –  8.0.32-1ubuntu1.7
14.04 trusty libtomcat7-java –  7.0.52-1ubuntu0.15
tomcat7 –  7.0.52-1ubuntu0.15

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References

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