| Package | Affected versions | Patched versions |
|---|---|---|
| firefox | < 67.0 | 67.0 |
| firefox esr | < 60.7 | 60.7 |
| thunderbird | < 60.7 | 60.7 |
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.
Running one of these products? Scan your site to see whether it exposes a vulnerable version.
Scan my site free