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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
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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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