=========================================================================Ubuntu Security Notice USN-2522-1
March 05, 2015

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

- Ubuntu 14.10
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS

Summary:

ICU could be made to crash or run programs as your login if it processed
specially crafted data.

Software Description:
- icu: International Components for Unicode library

Details:

It was discovered that ICU incorrectly handled memory operations when
processing fonts. If an application using ICU processed crafted data, an
attacker could cause it to crash or potentially execute arbitrary code with
the privileges of the user invoking the program. This issue only affected
Ubuntu 12.04 LTS. (CVE-2013-1569, CVE-2013-2383, CVE-2013-2384,
CVE-2013-2419)

It was discovered that ICU incorrectly handled memory operations when
processing fonts. If an application using ICU processed crafted data, an
attacker could cause it to crash or potentially execute arbitrary code with
the privileges of the user invoking the program. (CVE-2014-6585,
CVE-2014-6591)

It was discovered that ICU incorrectly handled memory operations when
processing regular expressions. If an application using ICU processed
crafted data, an attacker could cause it to crash or potentially execute
arbitrary code with the privileges of the user invoking the program.
(CVE-2014-7923, CVE-2014-7926, CVE-2014-9654)

It was discovered that ICU collator implementation incorrectly handled
memory operations. If an application using ICU processed crafted data, an
attacker could cause it to crash or potentially execute arbitrary code with
the privileges of the user invoking the program. (CVE-2014-7940)

Update instructions:

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

Ubuntu 14.10:
  libicu52                        52.1-6ubuntu0.2

Ubuntu 14.04 LTS:
  libicu52                        52.1-3ubuntu0.2

Ubuntu 12.04 LTS:
  libicu48                        4.8.1.1-3ubuntu0.3

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

References:
  
  CVE-2013-1569, CVE-2013-2383, CVE-2013-2384, CVE-2013-2419,
  CVE-2014-6585, CVE-2014-6591, CVE-2014-7923, CVE-2014-7926,
  CVE-2014-7940, CVE-2014-9654

Package Information:
  https://launchpad.net/ubuntu/+source/icu/52.1-6ubuntu0.2
  https://launchpad.net/ubuntu/+source/icu/52.1-3ubuntu0.2
  https://launchpad.net/ubuntu/+source/icu/4.8.1.1-3ubuntu0.3