Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. This update upgrades Firefox to version 60.6.1 ESR. Security Fix: * Mozilla: IonMonkey MArraySlice has incorrect alias information * Mozilla: Ionmonkey type confusion with __proto__ mutations For more details about the security issue, including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page listed in the References section.