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==========================================================================
Ubuntu Security Notice USN-3747-1
August 21, 2018

openjdk-lts vulnerabilities
==========================================================================

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

- Ubuntu 18.04 LTS

Summary:

Several security issues were fixed in OpenJDK 10.

Software Description:
- openjdk-lts: Java runtime based on OpenJDK (debugging symbols)

Details:

It was discovered that OpenJDK did not properly validate types in some
situations. An attacker could use this to construct a Java class that could
possibly bypass sandbox restrictions. (CVE-2018-2825, CVE-2018-2826)

It was discovered that the PatternSyntaxException class in OpenJDK did not
properly validate arguments passed to it. An attacker could use this to
potentially construct a class that caused a denial of service (excessive
memory consumption). (CVE-2018-2952)

Daniel Bleichenbacher discovered a vulnerability in the Galois/Counter Mode
(GCM) mode of operation for symmetric block ciphers in OpenJDK. An attacker
could use this to expose sensitive information. (CVE-2018-2972)

Update instructions:

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

Ubuntu 18.04 LTS:
  openjdk-11-jre                  10.0.2+13-1ubuntu0.18.04.1
  openjdk-11-jre-headless         10.0.2+13-1ubuntu0.18.04.1
  openjdk-11-jre-zero             10.0.2+13-1ubuntu0.18.04.1

This update uses a new upstream release, which includes additional bug
fixes. After a standard system update you need to restart any Java
applications or applets to make all the necessary changes.

References:
  https://usn.ubuntu.com/usn/usn-3747-1
  CVE-2018-2825, CVE-2018-2826, CVE-2018-2952, CVE-2018-2972

Package Information:
  https://launchpad.net/ubuntu/+source/openjdk-lts/10.0.2+13-1ubuntu0.18.04.1


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