CVE ID:	CVE-2019-9815
Description:	If hyperthreading is not disabled, a timing attack vulnerability exists, similar to previous Spectre attacks. Apple has shipped macOS 10.14.5 with an option to disable hyperthreading in applications running untrusted code in a thread through a new sysctl. Firefox now makes use of it on the main thread and any worker threads. *Note: users need to update to macOS 10.14.5 in order to take advantage of this change.*. This vulnerability affects Thunderbird < 60.7, Firefox < 67, and Firefox ESR < 60.7.
Test IDs:	None available
Cross References:	Common Vulnerability Exposure (CVE) ID: CVE-2019-9815 https://bugzilla.mozilla.org/show_bug.cgi?id=1546544 https://mdsattacks.com/ https://www.mozilla.org/security/advisories/mfsa2019-13/ https://www.mozilla.org/security/advisories/mfsa2019-14/ https://www.mozilla.org/security/advisories/mfsa2019-15/