Vulnerability CVE-2019-9792: Information
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.
Severity: CRITICAL (9.8) Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Fixed packages
References to Advisories, Solutions, and Tools
Hyperlink | Resource |
---|---|
https://www.mozilla.org/security/advisories/mfsa2019-11/ |
|
https://www.mozilla.org/security/advisories/mfsa2019-08/ |
|
https://www.mozilla.org/security/advisories/mfsa2019-07/ |
|
https://bugzilla.mozilla.org/show_bug.cgi?id=1532599 |
|
RHSA-2019:0966 |
|
RHSA-2019:1144 |
|
http://packetstormsecurity.com/files/153106/Spidermonkey-IonMonkey-JS_OPTIMIZED_OUT-Value-Leak.html |
|