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==========================================================================
Ubuntu Security Notice USN-3747-2
September 12, 2018

openjdk-lts regression
==========================================================================

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

- Ubuntu 18.04 LTS

Summary:

USN-3747-1 introduced a regression in OpenJDK 10.

Software Description:
- openjdk-lts: Open Source Java implementation

Details:

USN-3747-1 fixed vulnerabilities in OpenJDK 10 for Ubuntu 18.04 LTS.
Unfortunately, that update introduced a regression around accessability
support that prevented some Java applications from starting.
This update fixes the problem.

We apologize for the inconvenience.

Original advisory 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-jdk                  10.0.2+13-1ubuntu0.18.04.2
  openjdk-11-jdk-headless         10.0.2+13-1ubuntu0.18.04.2
  openjdk-11-jre                  10.0.2+13-1ubuntu0.18.04.2
  openjdk-11-jre-headless         10.0.2+13-1ubuntu0.18.04.2
  openjdk-11-jre-zero             10.0.2+13-1ubuntu0.18.04.2

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-3747-2
  https://usn.ubuntu.com/usn/usn-3747-1
  https://launchpad.net/bugs/1788250

Package Information:
  https://launchpad.net/ubuntu/+source/openjdk-lts/10.0.2+13-1ubuntu0.18.04.2


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