=========================================================================Ubuntu Security Notice USN-2818-1
November 25, 2015

openjdk-7 vulnerability
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 15.10
- Ubuntu 15.04
- Ubuntu 14.04 LTS

Summary:

A security issue was fixed in OpenJDK 7.

Software Description:
- openjdk-7: Open Source Java implementation

Details:

It was discovered that rebinding of the receiver of a
DirectMethodHandle may allow a protected method to be accessed. Am
attacker could use this to expose sensitive information or possibly
execute arbitrary code.

Update instructions:

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

Ubuntu 15.10:
  icedtea-7-jre-jamvm             7u91-2.6.3-0ubuntu0.15.10.1
  openjdk-7-jre                   7u91-2.6.3-0ubuntu0.15.10.1
  openjdk-7-jre-headless          7u91-2.6.3-0ubuntu0.15.10.1
  openjdk-7-jre-lib               7u91-2.6.3-0ubuntu0.15.10.1
  openjdk-7-jre-zero              7u91-2.6.3-0ubuntu0.15.10.1

Ubuntu 15.04:
  icedtea-7-jre-jamvm             7u91-2.6.3-0ubuntu0.15.04.1
  openjdk-7-jre                   7u91-2.6.3-0ubuntu0.15.04.1
  openjdk-7-jre-headless          7u91-2.6.3-0ubuntu0.15.04.1
  openjdk-7-jre-lib               7u91-2.6.3-0ubuntu0.15.04.1
  openjdk-7-jre-zero              7u91-2.6.3-0ubuntu0.15.04.1

Ubuntu 14.04 LTS:
  icedtea-7-jre-jamvm             7u91-2.6.3-0ubuntu0.14.04.1
  openjdk-7-jre                   7u91-2.6.3-0ubuntu0.14.04.1
  openjdk-7-jre-headless          7u91-2.6.3-0ubuntu0.14.04.1
  openjdk-7-jre-lib               7u91-2.6.3-0ubuntu0.14.04.1
  openjdk-7-jre-zero              7u91-2.6.3-0ubuntu0.14.04.1

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-2818-1
  CVE-2015-4871

Package Information:
  https://launchpad.net/ubuntu/+source/openjdk-7/7u91-2.6.3-0ubuntu0.15.10.1
  https://launchpad.net/ubuntu/+source/openjdk-7/7u91-2.6.3-0ubuntu0.15.04.1
  https://launchpad.net/ubuntu/+source/openjdk-7/7u91-2.6.3-0ubuntu0.14.04.1