UBUNTU-CVE-2019-9815

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UBUNTU-CVE-2019-9815

Summary:

Details: 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.

References: https://ubuntu.com/security/CVE-2019-9815, https://www.mozilla.org/en-US/security/advisories/mfsa2019-13/#CVE-2019-9815, https://www.mozilla.org/en-US/security/advisories/mfsa2019-15/#CVE-2019-9815, https://www.cve.org/CVERecord?id=CVE-2019-9815