USN-3747-1: OpenJDK 10 vulnerabilities

21 August 2018

openjdk-lts vulnerabilities

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

  • Ubuntu 18.04 LTS

Summary

Several security issues were fixed in OpenJDK 10.

Software Description

  • openjdk-lts - Java runtime based on OpenJDK (debugging symbols)

Details

It was discovered that OpenJDK did not properly validate types in some situations. An attacker could use this to construct a Java class that could possibly bypass sandbox restrictions. (CVE-2018-2825, CVE-2018-2826)

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). (CVE-2018-2952)

Daniel Bleichenbacher discovered a vulnerability in the Galois/Counter Mode (GCM) mode of operation for symmetric block ciphers in OpenJDK. An attacker could use this to expose sensitive information. (CVE-2018-2972)

Update instructions

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

Ubuntu 18.04 LTS
openjdk-11-jre - 10.0.2+13-1ubuntu0.18.04.1
openjdk-11-jre-headless - 10.0.2+13-1ubuntu0.18.04.1
openjdk-11-jre-zero - 10.0.2+13-1ubuntu0.18.04.1

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