Vulnerability CVE-2019-9815: Information
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.
Severity: HIGH (8.1) Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Fixed packages
Package name | Branch | Fixed in version | Version from repository | Errata ID | Task # | State |
|---|---|---|---|---|---|---|
| firefox | sisyphus | 67.0-alt1 | 127.0-alt1 | ALT-PU-2019-1941-1 | 231216 | Fixed |
| firefox | p10 | 67.0-alt1 | 118.0.2-alt0.p10.1 | ALT-PU-2019-1941-1 | 231216 | Fixed |
| firefox | p9 | 67.0-alt1 | 105.0.1-alt0.c9.1 | ALT-PU-2019-1941-1 | 231216 | Fixed |
| firefox | p8 | 68.0.1-alt0.M80P.1 | 68.0.1-alt0.M80P.1 | ALT-PU-2019-2938-1 | 236175 | Fixed |
| firefox | c10f1 | 67.0-alt1 | 112.0.2-alt0.p10.1 | ALT-PU-2019-1941-1 | 231216 | Fixed |
| firefox | c7 | 60.7.0-alt0.M70C.1 | 60.8.0-alt0.M70C.1 | ALT-PU-2019-2035-1 | 231641 | Fixed |
| firefox | p11 | 67.0-alt1 | 126.0.1-alt1 | ALT-PU-2019-1941-1 | 231216 | Fixed |
| firefox-esr | p8 | 60.7.0-alt0.M80P.1 | 68.4.1-alt0.M80P.1 | ALT-PU-2019-1903-1 | 229794 | Fixed |
| thunderbird | p8 | 60.7.2-alt0.M80P.1 | 60.8.0-alt0.M80P.1 | ALT-PU-2019-2196-1 | 216874 | Fixed |
| thunderbird | c7 | 60.8.0-alt0.M70C.1 | 60.8.0-alt0.M70C.1 | ALT-PU-2019-2345-1 | 234994 | Fixed |
References to Advisories, Solutions, and Tools
Hyperlink | Resource |
|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=1546544 |
|
| https://www.mozilla.org/security/advisories/mfsa2019-15/ |
|
| https://www.mozilla.org/security/advisories/mfsa2019-14/ |
|
| https://www.mozilla.org/security/advisories/mfsa2019-13/ |
|
| https://mdsattacks.com/ |
|