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USN-3121-1: OpenJDK 8 vulnerabilities

3 November 2016

Several security issues were fixed in OpenJDK 8.

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Releases

Packages

  • openjdk-8 - Open Source Java implementation

Details

It was discovered that the Hotspot component of OpenJDK did not properly
check arguments of the System.arraycopy() function in certain cases. An
attacker could use this to bypass Java sandbox restrictions.
(CVE-2016-5582)

It was discovered that OpenJDK did not restrict the set of algorithms used
for Jar integrity verification. An attacker could use this to modify
without detection the content of a JAR file, affecting system integrity.
(CVE-2016-5542)

It was discovered that the JMX component of OpenJDK did not sufficiently
perform classloader consistency checks. An attacker could use this to
bypass Java sandbox restrictions. (CVE-2016-5554)

It was discovered that the Hotspot component of OpenJDK did not properly
check received Java Debug Wire Protocol (JDWP) packets. An attacker could
use this to send debugging commands to a Java application with debugging
enabled. (CVE-2016-5573)

It was discovered that OpenJDK did not properly handle HTTP proxy
authentication. An attacker could use this to expose HTTPS server
authentication credentials. (CVE-2016-5597)

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Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

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Update instructions

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

Ubuntu 16.10
Ubuntu 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

Related notices

  • USN-3130-1: openjdk-7, icedtea-7-jre-jamvm, openjdk-7-jre, openjdk-7-jre-lib, openjdk-7-jre-zero, openjdk-7-source, openjdk-7-demo, openjdk-7-jdk, openjdk-7-jre-headless, openjdk-7-doc
  • USN-3154-1: openjdk-6-jre-headless, openjdk-6-jre, openjdk-6-jdk, icedtea-6-jre-jamvm, openjdk-6, icedtea-6-jre-cacao, openjdk-6-jre-lib

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Further reading