[USN-3723-1] Tomcat vulnerabilities


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From: Marc Deslauriers
Reply-To: Ubuntu Security
To: ubuntu-security-announce@lists.ubuntu.com
Message-ID:
Subject: [USN-3723-1] Tomcat vulnerabilities

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Ubuntu Security Notice USN-3723-1
July 25, 2018

tomcat7, tomcat8 vulnerabilities
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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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