USN-3274-1: ICU vulnerabilities

2 May 2017

icu vulnerabilities

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

  • Ubuntu 17.04
  • Ubuntu 16.10
  • Ubuntu 16.04 LTS
  • Ubuntu 14.04 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 versions:

Ubuntu 17.04
libicu57 - 57.1-5ubuntu0.1
Ubuntu 16.10
libicu57 - 57.1-4ubuntu0.2
Ubuntu 16.04 LTS
libicu55 - 55.1-7ubuntu0.2
Ubuntu 14.04 LTS
libicu52 - 52.1-3ubuntu0.6

To update your system, please follow these instructions:

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