ESB-2018.2309 - [Ubuntu] openjdk-7 and openjdk-8: Denial of service - Remote/unauthenticated 2018-08-10

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.2309
                          OpenJDK 7 vulnerability
                              10 August 2018

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           openjdk-7
                   openjdk-8
Publisher:         Ubuntu
Operating System:  Ubuntu
Impact/Access:     Denial of Service -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-2952  

Reference:         ASB-2018.0169
                   ESB-2018.2206
                   ESB-2018.2204
                   ESB-2018.2182
                   ESB-2018.2181

Original Bulletin: 
   http://www.ubuntu.com/usn/usn-3734-1
   http://www.ubuntu.com/usn/usn-3735-1

Comment: This bulletin contains two (2) Ubuntu security advisories.

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USN-3734-1: OpenJDK 8 vulnerability

10 August 2018

openjdk-8 vulnerability

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

Ubuntu 16.04 LTS

Summary

Java applications could be made to use excessive memory.

Software Description

openjdk-8 - Open Source Java implementation

Details

It was discovered that the PatternSyntaxException class in OpenJDK did not 
properly validate arguments passed to it. An attacker could use this to 
possibly construct a class that caused a denial of service (excessive memory 
consumption).

Update instructions

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

Ubuntu 16.04 LTS

openjdk-8-jdk - 8u181-b13-0ubuntu0.16.04.1

openjdk-8-jre - 8u181-b13-0ubuntu0.16.04.1

openjdk-8-jre-headless - 8u181-b13-0ubuntu0.16.04.1

openjdk-8-jre-jamvm - 8u181-b13-0ubuntu0.16.04.1

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.

References

CVE-2018-2952

USN-3735-1: OpenJDK 7 vulnerability

- ---

10 August 2018

openjdk-7 vulnerability

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

Ubuntu 14.04 LTS

Summary

Java applications could be made to use excessive memory.

Software Description

openjdk-7 - Open Source Java implementation

Details

It was discovered that the PatternSyntaxException class in OpenJDK did not 
properly validate arguments passed to it. An attacker could use this to 
potentially construct a class that caused a denial of service (excessive 
memory consumption).

Update instructions

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

Ubuntu 14.04 LTS

icedtea-7-jre-jamvm - 7u181-2.6.14-0ubuntu0.2

openjdk-7-jdk - 7u181-2.6.14-0ubuntu0.2

openjdk-7-jre - 7u181-2.6.14-0ubuntu0.2

openjdk-7-jre-headless - 7u181-2.6.14-0ubuntu0.2

openjdk-7-jre-lib - 7u181-2.6.14-0ubuntu0.2

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

After a standard system update you need to restart any Java applications or 
applets to make all the necessary changes.

References CVE-2018-2952

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