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.
Metrics
Affected Vendors & Products
Advisories
| Source | ID | Title |
|---|---|---|
Debian DLA |
DLA-1722-1 | firefox-esr security update |
Debian DLA |
DLA-1743-1 | thunderbird security update |
Debian DSA |
DSA-4411-1 | firefox-esr security update |
Debian DSA |
DSA-4420-1 | thunderbird security update |
Ubuntu USN |
USN-3918-1 | Firefox vulnerabilities |
Ubuntu USN |
USN-3918-2 | Firefox vulnerabilities |
Ubuntu USN |
USN-3927-1 | Thunderbird vulnerabilities |
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Tue, 25 Nov 2025 18:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| CPEs | ||
| Vendors & Products |
Mozilla firefox Esr
|
Status: PUBLISHED
Assigner: mozilla
Published:
Updated: 2024-08-04T22:01:54.735Z
Reserved: 2019-03-14T00:00:00
Link: CVE-2019-9792
No data.
Status : Modified
Published: 2019-04-26T17:29:01.697
Modified: 2025-11-25T17:50:16.803
Link: CVE-2019-9792
OpenCVE Enrichment
No data.
Debian DLA
Debian DSA
Ubuntu USN