Description
A vulnerability where type-confusion in the IonMonkey just-in-time (JIT) compiler could potentially be used by malicious JavaScript to trigger a potentially exploitable crash. This vulnerability affects Thunderbird < 60.6, Firefox ESR < 60.6, and Firefox < 66.
References (6)
Core 6
Core References
Vendor Advisory x_refsource_misc
https://www.mozilla.org/security/advisories/mfsa2019-07/
Vendor Advisory x_refsource_misc
https://www.mozilla.org/security/advisories/mfsa2019-08/
Vendor Advisory x_refsource_misc
https://www.mozilla.org/security/advisories/mfsa2019-11/
Issue Tracking, Permissions Required, Vendor Advisory x_refsource_misc
https://bugzilla.mozilla.org/show_bug.cgi?id=1514682
Vendor Advisory vendor-advisory
x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:0966
Vendor Advisory vendor-advisory
x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:1144
Scores
CVSS v3
9.8
EPSS
0.0071
EPSS Percentile
72.4%
Attack Vector
NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Details
CWE
CWE-843
CWE-617
Status
published
Products (3)
mozilla/firefox
< 66.0
mozilla/firefox_esr
< 60.6
mozilla/thunderbird
< 60.6
Published
Apr 26, 2019
Tracked Since
Feb 18, 2026