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==========================================================================
Ubuntu Security Notice USN-4433-1
July 23, 2020

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

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

- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS

Summary:

Several security issues were fixed in OpenJDK.

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

Details:

Johannes Kuhn discovered that OpenJDK incorrectly handled access control
contexts. An attacker could possibly use this issue to execute arbitrary
code. (CVE-2020-14556)

It was discovered that OpenJDK incorrectly handled memory allocation when
reading TIFF image files. An attacker could possibly use this issue to
cause a denial of service. (CVE-2020-14562)

It was discovered that OpenJDK incorrectly handled input data. An
attacker could possibly use this issue to insert, edit or obtain
sensitive information. (CVE-2020-14573)

Philippe Arteau discovered that OpenJDK incorrectly verified names in
TLS server's X.509 certificates. An attacker could possibly use this
issue to obtain sensitive information. (CVE-2020-14577)

It was discovered that OpenJDK incorrectly handled image files. An
attacker could possibly use this issue to obtain sensitive information.
(CVE-2020-14581)

Markus Loewe discovered that OpenJDK incorrectly handled concurrent
access in java.nio.Buffer class. An attacker could use this issue to
bypass the sandbox restrictions and cause unspecified impact.
(CVE-2020-14583)

It was discovered that OpenJDK incorrectly handled transformation of
images. An attacker could possibly use this issue to bypass sandbox
restrictions and insert, edit or obtain sensitive information.
(CVE-2020-14593)

Roman Shemyakin discovered that OpenJDK incorrectly handled XML files.
An attacker could possibly use this issue to insert, edit or obtain
sensitive information. (CVE-2020-14621)

Update instructions:

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

Ubuntu 20.04 LTS:
  openjdk-11-jdk                  11.0.8+10-0ubuntu1~20.04
  openjdk-11-jre                  11.0.8+10-0ubuntu1~20.04
  openjdk-11-jre-headless         11.0.8+10-0ubuntu1~20.04
  openjdk-11-jre-zero             11.0.8+10-0ubuntu1~20.04

Ubuntu 18.04 LTS:
  openjdk-11-jdk                  11.0.8+10-0ubuntu1~18.04.1
  openjdk-11-jre                  11.0.8+10-0ubuntu1~18.04.1
  openjdk-11-jre-headless         11.0.8+10-0ubuntu1~18.04.1
  openjdk-11-jre-zero             11.0.8+10-0ubuntu1~18.04.1

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/4433-1
  CVE-2020-14556, CVE-2020-14562, CVE-2020-14573, CVE-2020-14577,
  CVE-2020-14581, CVE-2020-14583, CVE-2020-14593, CVE-2020-14621

Package Information:
  https://launchpad.net/ubuntu/+source/openjdk-lts/11.0.8+10-0ubuntu1~20.04
  https://launchpad.net/ubuntu/+source/openjdk-lts/11.0.8+10-0ubuntu1~18.04.1

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