Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 52.2.0. Security Fix: * 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. Red Hat would like to thank the Mozilla project for reporting these issues. Upstream acknowledges Nils, Nicolas Trippar , Tyson Smith, Mats Palmgren, Philipp, Masayuki Nakano, Christian Holler, Andrew McCreight, Gary Kwong, Andre Bargull, Carsten Book, Jesse Schwartzentruber, Julian Hector, Marcia Knous, Ronald Crane, Samuel Erb, Holger Fuhrmannek, Abhishek Arya, and F. Alonso as the original reporters.