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MFSA2019-08 Firefox: Security vulnerabilities fixed in Firefox ESR 60.6 (CVE-2019-9792)

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MFSA2019-08 Firefox: Security vulnerabilities fixed in Firefox ESR 60.6 (CVE-2019-9792)

Severity
8
CVSS
(AV:N/AC:L/Au:N/C:P/I:P/A:P)
Published
03/19/2019
Created
04/22/2019
Added
03/20/2019
Modified
05/15/2019

Description

The IonMonkey just-in-time (JIT) compiler can leak an internal JS_OPTIMIZED_OUT magic value to the running script during a bailout. This magic value can then be used by JavaScript to achieve memory corruption, which results in a potentially exploitable crash. This vulnerability affects Thunderbird < 60.6, Firefox ESR < 60.6, and Firefox < 66.

Solution(s)

  • mozilla-firefox-esr-upgrade-60_6

References

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