(RHSA-2016:2973) Important: thunderbird security update

Mozilla Thunderbird is a standalone mail and newsgroup client.

This update upgrades Thunderbird to version 45.6.0.

Security Fix(es):

• Multiple flaws were found in the processing of malformed web content. A web
  page containing malicious content could cause Thunderbird to crash or,
  potentially, execute arbitrary code with the privileges of the user running
  Thunderbird. (CVE-2016-9893, CVE-2016-9899, CVE-2016-9895, CVE-2016-9900,
  CVE-2016-9901, CVE-2016-9902, CVE-2016-9905)

Red Hat would like to thank the Mozilla project for reporting these issues.
Upstream acknowledges Wladimir Palant, Philipp, Andrew Krasichkov, insertscript,
Jan de Mooij, Iris Hsiao, Christian Holler, Carsten Book, Timothy Nikkel,
Christoph Diehl, Olli Pettay, Raymond Forbes, and Boris Zbarsky as the original
reporters.