(RHSA-2016:1809) Important: thunderbird security update

Mozilla Thunderbird is a standalone mail and newsgroup client.

This update upgrades Thunderbird to version 45.3.0.

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-2016-2836)

Red Hat would like to thank the Mozilla project for reporting these issues.
Upstream acknowledges Carsten Book, Christian Holler, Gary Kwong, Jesse
Ruderman, Andrew McCreight, Phil Ringnalda, and Philipp as the original
reporters.