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Ubuntu Security Notice USN-4251-1

Ubuntu Security Notice USN-4251-1
Posted Jan 27, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4251-1 - It was discovered that Tomcat incorrectly handled the RMI registry when configured with the JMX Remote Lifecycle Listener. A local attacker could possibly use this issue to obtain credentials and gain complete control over the Tomcat instance. It was discovered that Tomcat incorrectly handled FORM authentication. A remote attacker could possibly use this issue to perform a session fixation attack. Various other issues were also addressed.

tags | advisory, remote, local, registry
systems | linux, ubuntu
advisories | CVE-2019-12418, CVE-2019-17563
SHA-256 | ad779f760ea839626bc9a096e5b49f03e65d7dfdb4d11c6a4f0aa0d7d43b5d23

Ubuntu Security Notice USN-4251-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-4251-1
January 27, 2020

tomcat8 vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 16.04 LTS

Summary:

Several security issues were fixed in Tomcat.

Software Description:
- tomcat8: Servlet and JSP engine

Details:

It was discovered that Tomcat incorrectly handled the RMI registry when
configured with the JMX Remote Lifecycle Listener. A local attacker could
possibly use this issue to obtain credentials and gain complete control
over the Tomcat instance. (CVE-2019-12418)

It was discovered that Tomcat incorrectly handled FORM authentication. A
remote attacker could possibly use this issue to perform a session fixation
attack. (CVE-2019-17563)

Update instructions:

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

Ubuntu 16.04 LTS:
libtomcat8-java 8.0.32-1ubuntu1.11
tomcat8 8.0.32-1ubuntu1.11

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

References:
https://usn.ubuntu.com/4251-1
CVE-2019-12418, CVE-2019-17563

Package Information:
https://launchpad.net/ubuntu/+source/tomcat8/8.0.32-1ubuntu1.11
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