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.
History

No history.

cve-icon MITRE Information

Status: PUBLISHED

Assigner: mozilla

Published: 2019-07-23T13:24:32

Updated: 2019-07-23T13:24:32

Reserved: 2019-03-14T00:00:00


Link: CVE-2019-9815

JSON object: View

cve-icon NVD Information

Status : Analyzed

Published: 2019-07-23T14:15:17.030

Modified: 2021-09-08T17:22:01.943


Link: CVE-2019-9815

JSON object: View

cve-icon Redhat Information

No data.

CWE