icu - security update

Several security issues have been identified and corrected in ICU, the
International Components for Unicode C and C++ library, in Debian Wheezy.

• CVE-2015-2632
  Buffer overflow vulnerability.
• CVE-2015-4844
  Buffer overflow vulnerability.
• CVE-2016-0494
  Integer signedness/overflow vulnerability.

For Debian 7 Wheezy, these problems have been fixed in version
4.8.1.1-12+deb7u4.

We recommend that you upgrade your icu packages.

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: <https://wiki.debian.org/LTS&gt;