CVE-2019-9815
N/A
N/A
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Mozilla | Thunderbird | unspecified < 60.7 | affected |
| Mozilla | Firefox | unspecified < 67 | affected |
| Mozilla | Firefox ESR | unspecified < 60.7 | affected |
Weaknesses
- Disable hyperthreading on content JavaScript threads on macOS
ADP Enrichment
CVE Program Container
Additional References
- https://www.mozilla.org/security/advisories/mfsa2019-13/
- https://www.mozilla.org/security/advisories/mfsa2019-15/
- https://www.mozilla.org/security/advisories/mfsa2019-14/
- https://bugzilla.mozilla.org/show_bug.cgi?id=1546544
- https://mdsattacks.com/
References
- https://www.mozilla.org/security/advisories/mfsa2019-13/
- https://www.mozilla.org/security/advisories/mfsa2019-15/
- https://www.mozilla.org/security/advisories/mfsa2019-14/
- https://bugzilla.mozilla.org/show_bug.cgi?id=1546544
- https://mdsattacks.com/
Feedback
Was this page helpful?
Glad to hear it! Please tell us how we can improve.
Sorry to hear that. Please tell us how we can improve.