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             AUSCERT External Security Bulletin Redistribution

                    USN-3975-1: OpenJDK vulnerabilities
                                14 May 2019


        AusCERT Security Bulletin Summary

Product:           OpenJDK
Publisher:         Ubuntu
Operating System:  Ubuntu
Impact/Access:     Execute Arbitrary Code/Commands -- Remote with User Interaction
                   Modify Arbitrary Files          -- Remote/Unauthenticated      
                   Denial of Service               -- Remote/Unauthenticated      
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-2698 CVE-2019-2697 CVE-2019-2684

Reference:         ASB-2019.0118

Original Bulletin: 

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USN-3975-1: OpenJDK vulnerabilities
13 May 2019

openjdk-8, openjdk-lts vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:

  o Ubuntu 19.04
  o Ubuntu 18.10
  o Ubuntu 18.04 LTS
  o Ubuntu 16.04 LTS


Several security issues were fixed in OpenJDK.

Software Description

  o openjdk-lts - Open Source Java implementation
  o openjdk-8 - Open Source Java implementation


It was discovered that the BigDecimal implementation in OpenJDK performed
excessive computation when given certain values. An attacker could use this to
cause a denial of service (excessive CPU usage). (CVE-2019-2602)

Corwin de Boor and Robert Xiao discovered that the RMI registry implementation
in OpenJDK did not properly select the correct skeleton class in some
situations. An attacker could use this to possibly escape Java sandbox
restrictions. (CVE-2019-2684)

Mateusz Jurczyk discovered a vulnerability in the 2D component of OpenJDK. An
attacker could use this to possibly escape Java sandbox restrictions. This
issue only affected OpenJDK 8 in Ubuntu 16.04 LTS. (CVE-2019-2697)

Mateusz Jurczyk discovered a vulnerability in the font layout engine of
OpenJDK's 2D component. An attacker could use this to possibly escape Java
sandbox restrictions. This issue only affected OpenJDK 8 in Ubuntu 16.04 LTS.

Update instructions

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

Ubuntu 19.04
    openjdk-11-jdk - 11.0.3+7-1ubuntu2~19.04.1
    openjdk-11-jdk-headless - 11.0.3+7-1ubuntu2~19.04.1
    openjdk-11-jre - 11.0.3+7-1ubuntu2~19.04.1
    openjdk-11-jre-headless - 11.0.3+7-1ubuntu2~19.04.1
Ubuntu 18.10
    openjdk-11-jdk - 11.0.3+7-1ubuntu2~18.10.1
    openjdk-11-jdk-headless - 11.0.3+7-1ubuntu2~18.10.1
    openjdk-11-jre - 11.0.3+7-1ubuntu2~18.10.1
    openjdk-11-jre-headless - 11.0.3+7-1ubuntu2~18.10.1
Ubuntu 18.04 LTS
    openjdk-11-jdk - 11.0.3+7-1ubuntu2~18.04.1
    openjdk-11-jdk-headless - 11.0.3+7-1ubuntu2~18.04.1
    openjdk-11-jre - 11.0.3+7-1ubuntu2~18.04.1
    openjdk-11-jre-headless - 11.0.3+7-1ubuntu2~18.04.1
Ubuntu 16.04 LTS
    openjdk-8-jdk - 8u212-b03-0ubuntu1.16.04.1
    openjdk-8-jdk-headless - 8u212-b03-0ubuntu1.16.04.1
    openjdk-8-jre - 8u212-b03-0ubuntu1.16.04.1
    openjdk-8-jre-headless - 8u212-b03-0ubuntu1.16.04.1
    openjdk-8-jre-jamvm - 8u212-b03-0ubuntu1.16.04.1

To update your system, please follow these instructions: https://
wiki.ubuntu.com/Security/Upgrades .

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.


  o CVE-2019-2602
  o CVE-2019-2684
  o CVE-2019-2697
  o CVE-2019-2698

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