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USN-3735-1: OpenJDK 7 vulnerability

10 August 2018

Java applications could be made to use excessive memory.



  • openjdk-7 - Open Source Java implementation


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

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


Related notices

  • USN-3734-1: openjdk-8-jre, openjdk-8, openjdk-8-jre-jamvm, openjdk-8-jre-zero, openjdk-8-jdk, openjdk-8-demo, openjdk-8-doc, openjdk-8-source, openjdk-8-jdk-headless, openjdk-8-jre-headless
  • USN-3747-1: openjdk-11-source, openjdk-lts, openjdk-11-jre, openjdk-11-doc, openjdk-11-demo, openjdk-11-jre-zero, openjdk-11-jdk, openjdk-11-jdk-headless, openjdk-11-jre-headless