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MFSA2019-07 Firefox: Security vulnerabilities fixed in Firefox 66 (CVE-2019-9793)

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MFSA2019-07 Firefox: Security vulnerabilities fixed in Firefox 66 (CVE-2019-9793)

Severity
4
CVSS
(AV:N/AC:M/Au:N/C:N/I:P/A:N)
Published
03/19/2019
Created
04/22/2019
Added
03/20/2019
Modified
05/15/2019

Description

A mechanism was discovered that removes some bounds checking for string, array, or typed array accesses if Spectre mitigations have been disabled. This vulnerability could allow an attacker to create an arbitrary value in compiled JavaScript, for which the range analysis will infer a fully controlled, incorrect range in circumstances where users have explicitly disabled Spectre mitigations. *Note: Spectre mitigations are currently enabled for all users by default settings.*. This vulnerability affects Thunderbird < 60.6, Firefox ESR < 60.6, and Firefox < 66.

Solution(s)

  • mozilla-firefox-upgrade-66_0

References

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