USN-3227-1: ICU vulnerabilities

Ubuntu Security Notice USN-3227-1

13th March, 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


Several security issues were fixed in ICU.

Software description

  • icu - International Components for Unicode library


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 version:

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:

To update your system, please follow these instructions:

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


CVE-2014-9911, CVE-2015-4844, CVE-2016-0494, CVE-2016-6293, CVE-2016-7415