==========================================================================
Ubuntu Security Notice USN-3227-1
March 13, 2017

icu vulnerabilities
==========================================================================

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

- Ubuntu 16.10
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS

Summary:

Several security issues were fixed in ICU.

Software Description:
- icu: International Components for Unicode library

Details:

It was discovered that ICU incorrectly handled certain memory operations
when processing data. If an application using ICU processed crafted data,
a remote attacker could possibly cause it to crash or potentially execute
arbitrary code with the privileges of the user invoking the program.

Update instructions:

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

Ubuntu 16.10:
  libicu57                        57.1-4ubuntu0.1

Ubuntu 16.04 LTS:
  libicu55                        55.1-7ubuntu0.1

Ubuntu 14.04 LTS:
  libicu52                        52.1-3ubuntu0.5

Ubuntu 12.04 LTS:
  libicu48                        4.8.1.1-3ubuntu0.7

In general, a standard system update will make all the necessary changes.

References:
  http://www.ubuntu.com/usn/usn-3227-1
  CVE-2014-9911, CVE-2015-4844, CVE-2016-0494, CVE-2016-6293,
  CVE-2016-7415

Package Information:
  https://launchpad.net/ubuntu/+source/icu/57.1-4ubuntu0.1
  https://launchpad.net/ubuntu/+source/icu/55.1-7ubuntu0.1
  https://launchpad.net/ubuntu/+source/icu/52.1-3ubuntu0.5
  https://launchpad.net/ubuntu/+source/icu/4.8.1.1-3ubuntu0.7