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AUSCERT External Security Bulletin Redistribution
ESB-2021.0453
USN-4726-1: OpenJDK vulnerability
10 February 2021
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AusCERT Security Bulletin Summary
---------------------------------
Product: OpenJDK
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Denial of Service -- Unknown/Unspecified
Resolution: Patch/Upgrade
Original Bulletin:
https://ubuntu.com/security/notices/USN-4726-1
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USN-4726-1: OpenJDK vulnerability
09 February 2021
OpenJDK could be made to crash if it received specially crafted
input.
Releases
o Ubuntu 20.10
o Ubuntu 20.04 LTS
o Ubuntu 18.04 LTS
o Ubuntu 16.04 LTS
Packages
o openjdk-8 - Open Source Java implementation
o openjdk-lts - Open Source Java implementation
Details
It was discovered that OpenJDK incorrectly handled the direct buffering of
characters. An attacker could use this issue to cause OpenJDK to crash,
resulting in a denial of service, or cause other unspecified impact.
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 20.10
o openjdk-11-jdk - 11.0.10+9-0ubuntu1~20.10
o openjdk-11-jre - 11.0.10+9-0ubuntu1~20.10
o openjdk-11-jre-headless - 11.0.10+9-0ubuntu1~20.10
o openjdk-11-jre-zero - 11.0.10+9-0ubuntu1~20.10
o openjdk-8-jdk - 8u282-b08-0ubuntu1~20.10
o openjdk-8-jre - 8u282-b08-0ubuntu1~20.10
o openjdk-8-jre-headless - 8u282-b08-0ubuntu1~20.10
o openjdk-8-jre-zero - 8u282-b08-0ubuntu1~20.10
Ubuntu 20.04
o openjdk-11-jdk - 11.0.10+9-0ubuntu1~20.04
o openjdk-11-jre - 11.0.10+9-0ubuntu1~20.04
o openjdk-11-jre-headless - 11.0.10+9-0ubuntu1~20.04
o openjdk-11-jre-zero - 11.0.10+9-0ubuntu1~20.04
o openjdk-8-jdk - 8u282-b08-0ubuntu1~20.04
o openjdk-8-jre - 8u282-b08-0ubuntu1~20.04
o openjdk-8-jre-headless - 8u282-b08-0ubuntu1~20.04
o openjdk-8-jre-zero - 8u282-b08-0ubuntu1~20.04
Ubuntu 18.04
o openjdk-11-jdk - 11.0.10+9-0ubuntu1~18.04
o openjdk-11-jre - 11.0.10+9-0ubuntu1~18.04
o openjdk-11-jre-headless - 11.0.10+9-0ubuntu1~18.04
o openjdk-11-jre-zero - 11.0.10+9-0ubuntu1~18.04
o openjdk-8-jdk - 8u282-b08-0ubuntu1~18.04
o openjdk-8-jre - 8u282-b08-0ubuntu1~18.04
o openjdk-8-jre-headless - 8u282-b08-0ubuntu1~18.04
o openjdk-8-jre-zero - 8u282-b08-0ubuntu1~18.04
Ubuntu 16.04
o openjdk-8-jdk - 8u282-b08-0ubuntu1~16.04
o openjdk-8-jre - 8u282-b08-0ubuntu1~16.04
o openjdk-8-jre-headless - 8u282-b08-0ubuntu1~16.04
o openjdk-8-jre-jamvm - 8u282-b08-0ubuntu1~16.04
o openjdk-8-jre-zero - 8u282-b08-0ubuntu1~16.04
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
o https://launchpad.net/bugs/1914824
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