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USN-4453-1: OpenJDK 8 vulnerabilities

5 August 2020

Several security issues were fixed in OpenJDK 8.

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Releases

Packages

  • openjdk-8 - Open Source Java implementation

Details

Johannes Kuhn discovered that OpenJDK 8 incorrectly handled access control
contexts. An attacker could possibly use this issue to execute arbitrary
code. (CVE-2020-14556)

Philippe Arteau discovered that OpenJDK 8 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 8 incorrectly handled exceptions in
DerInputStream class and in the DerValue.equals() method. An attacker
could possibly use this issue to cause a denial of service.
(CVE-2020-14578, CVE-2020-14579)

It was discovered that OpenJDK 8 incorrectly handled image files. An
attacker could possibly use this issue to obtain sensitive information.
(CVE-2020-14581)

Markus Loewe discovered that OpenJDK 8 incorrectly handled concurrent
access in java.nio.Buffer class. An attacker could use this issue to
bypass sandbox restrictions.
(CVE-2020-14583)

It was discovered that OpenJDK 8 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 8 incorrectly handled XML files.
An attacker could possibly use this issue to insert, edit or obtain
sensitive information. (CVE-2020-14621)

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 20.04
Ubuntu 18.04
Ubuntu 16.04

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.

Related notices

  • USN-4433-1: openjdk-11-jdk, openjdk-11-jre-headless, openjdk-lts, openjdk-11-jdk-headless, openjdk-11-jre, openjdk-11-doc, openjdk-11-demo, openjdk-11-source, openjdk-11-jre-zero