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Ubuntu 18.04: USN-3747-1 Critical OpenJDK 10 Security Issues

ubuntu
Calendar Grey August 21, 2018
Dist Ubuntu Esm H88
Vulnerabilities in OpenJDK 10 were addressed in Ubuntu 18.04 LTS. Detailed update guidelines issued for safeguarding.
Several security issues were fixed in OpenJDK 10.

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)

Topics%20covered

Topics Covered

security advisory critical issue denial service ubuntu openjdk type bypass

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

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

https://ubuntu.com/security/notices/USN-3747-1

CVE-2018-2825, CVE-2018-2826, CVE-2018-2952, CVE-2018-2972

Severity
critical
Lowest
Low
Medium
High
Critical

August 21, 2018

Topics%20covered

Topics Covered

security advisory critical issue denial service ubuntu openjdk type bypass

Package Information

https://launchpad.net/ubuntu/+source/openjdk-lts/10.0.2+13-1ubuntu0.18.04.1

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