==========================================================================
Ubuntu Security Notice USN-3723-1
July 25, 2018
tomcat7, tomcat8 vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 16.04 LTS
– Ubuntu 14.04 LTS
Summary:
Several security issues were fixed in Tomcat.
Software Description:
– tomcat8: Servlet and JSP engine
– tomcat7: Servlet and JSP engine
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)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 16.04 LTS:
libtomcat8-java 8.0.32-1ubuntu1.7
tomcat8 8.0.32-1ubuntu1.7
Ubuntu 14.04 LTS:
libtomcat7-java 7.0.52-1ubuntu0.15
tomcat7 7.0.52-1ubuntu0.15
In general, a standard system update will make all the necessary changes.
References:
https://usn.ubuntu.com/usn/usn-3723-1
CVE-2018-1336, CVE-2018-8034
Package Information:
https://launchpad.net/ubuntu/+source/tomcat8/8.0.32-1ubuntu1.7
https://launchpad.net/ubuntu/+source/tomcat7/7.0.52-1ubuntu0.15
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