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Ubuntu Security Notice USN-2793-1
November 05, 2015

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

- Ubuntu 15.04
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS

Summary:

Several security issues were fixed in LibreOffice.

Software Description:
- libreoffice: Office productivity suite

Details:

Federico Scrinzi discovered that LibreOffice incorrectly handled documents
inserted into Writer or Calc via links. If a user were tricked into opening
a specially crafted document, a remote attacker could possibly obtain the
contents of arbitrary files. (CVE-2015-4551)

It was discovered that LibreOffice incorrectly handled PrinterSetup data
stored in ODF files. If a user were tricked into opening a specially
crafted ODF document, a remote attacker could cause LibreOffice to crash,
and possibly execute arbitrary code. (CVE-2015-5212)

It was discovered that LibreOffice incorrectly handled the number of pieces
in DOC files. If a user were tricked into opening a specially crafted DOC
document, a remote attacker could cause LibreOffice to crash, and possibly
execute arbitrary code. (CVE-2015-5213)

It was discovered that LibreOffice incorrectly handled bookmarks in DOC
files. If a user were tricked into opening a specially crafted DOC
document, a remote attacker could cause LibreOffice to crash, and possibly
execute arbitrary code. (CVE-2015-5214)

Update instructions:

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

Ubuntu 15.04:
  libreoffice-core                1:4.4.6~rc3-0ubuntu1

Ubuntu 14.04 LTS:
  libreoffice-core                1:4.2.8-0ubuntu3

Ubuntu 12.04 LTS:
  libreoffice-core                1:3.5.7-0ubuntu9

After a standard system update you need to restart LibreOffice to make all
the necessary changes.

References:
  http://www.ubuntu.com/usn/usn-2793-1
  CVE-2015-4551, CVE-2015-5212, CVE-2015-5213, CVE-2015-5214

Package Information:
  https://launchpad.net/ubuntu/+source/libreoffice/1:4.4.6~rc3-0ubuntu1
  https://launchpad.net/ubuntu/+source/libreoffice/1:4.2.8-0ubuntu3
  https://launchpad.net/ubuntu/+source/libreoffice/1:3.5.7-0ubuntu9