Mozilla Firefox is an open source web browser. This update upgrades Firefox to version 52.1.0 ESR. Security Fix: * Multiple flaws were found in the processing of malformed web content. A web page containing malicious content could cause Firefox to crash or, potentially, execute arbitrary code with the privileges of the user running Firefox. Red Hat would like to thank the Mozilla project for reporting these issues. Upstream acknowledges Mozilla developers and community, Nils, Holger Fuhrmannek, Atte Kettunen, Huzaifa Sidhpurwala, Nicolas Gregoire, Chamal De Silva, Chun Han Hsiao, Ivan Fratric of Google Project Zero, Anonymous working with Trend Micro"s Zero Day Initiative, and Petr Cerny as the original reporters.