USN-4453-1: OpenJDK 8 vulnerabilities

Releases

• Ubuntu 20.04 LTS
• Ubuntu 18.04 ESM
• Ubuntu 16.04 ESM

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)

Update instructions

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

Ubuntu 20.04

• openjdk-8-jdk - 8u265-b01-0ubuntu2~20.04
• openjdk-8-jre - 8u265-b01-0ubuntu2~20.04
• openjdk-8-jre-headless - 8u265-b01-0ubuntu2~20.04
• openjdk-8-jre-zero - 8u265-b01-0ubuntu2~20.04

Ubuntu 18.04

• openjdk-8-jdk - 8u265-b01-0ubuntu2~18.04
• openjdk-8-jre - 8u265-b01-0ubuntu2~18.04
• openjdk-8-jre-headless - 8u265-b01-0ubuntu2~18.04
• openjdk-8-jre-zero - 8u265-b01-0ubuntu2~18.04

Ubuntu 16.04

• openjdk-8-jdk - 8u265-b01-0ubuntu2~16.04
• openjdk-8-jre - 8u265-b01-0ubuntu2~16.04
• openjdk-8-jre-headless - 8u265-b01-0ubuntu2~16.04
• openjdk-8-jre-jamvm - 8u265-b01-0ubuntu2~16.04
• openjdk-8-jre-zero - 8u265-b01-0ubuntu2~16.04

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.

References

• CVE-2020-14556
• CVE-2020-14577
• CVE-2020-14578
• CVE-2020-14579
• CVE-2020-14581
• CVE-2020-14583
• CVE-2020-14593
• CVE-2020-14621

Related notices

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