[RHSA-2019:0623] firefox security update

Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability.

This update upgrades Firefox to version 60.6.0 ESR.

Security Fix(es):

• Mozilla: Memory safety bugs fixed in Firefox 66 and Firefox ESR 60.6 (CVE-2019-9788)

• Mozilla: Use-after-free when removing in-use DOM elements (CVE-2019-9790)

• Mozilla: Type inference is incorrect for constructors entered through on-stack replacement with IonMonkey (CVE-2019-9791)

• Mozilla: IonMonkey leaks JS_OPTIMIZED_OUT magic value to script (CVE-2019-9792)

• Mozilla: Improper bounds checks when Spectre mitigations are disabled (CVE-2019-9793)

• Mozilla: Type-confusion in IonMonkey JIT compiler (CVE-2019-9795)

• Mozilla: Use-after-free with SMIL animation controller (CVE-2019-9796)

• Mozilla: Proxy Auto-Configuration file can define localhost access to be proxied (CVE-2018-18506)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.