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MFSA2019-14 Firefox: Security vulnerabilities fixed in Firefox ESR 60.7 (CVE-2019-9815)

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MFSA2019-14 Firefox: Security vulnerabilities fixed in Firefox ESR 60.7 (CVE-2019-9815)

Severity
7
CVSS
(AV:N/AC:M/Au:N/C:P/I:P/A:P)
Published
05/21/2019
Created
05/23/2019
Added
05/22/2019
Modified
07/31/2019

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.

Solution(s)

  • mozilla-firefox-esr-upgrade-60_7

References

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