CVEvulnerability

CVE-2019-9792

9.8 CRITICAL Published 2019-04-26 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2019-04-26
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
7.5 HIGH — AV:N/AC:L/Au:N/C:P/I:P/A:P
Weaknesses
CWE-787

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.

Affected configurations

• mozilla firefox (< 60.6.0) • mozilla firefox (< 66.0) • mozilla thunderbird (< 60.6.0) • redhat enterprise linux 8.0 • redhat enterprise linux eus 8.1 • redhat enterprise linux eus 8.2 • redhat enterprise linux eus 8.4 • redhat enterprise linux server aus 8.2 • redhat enterprise linux server aus 8.4 • redhat enterprise linux server tus 8.2 • redhat enterprise linux server tus 8.4

Related

Weakness · CWE (1)

  • CWE-787 Out-of-bounds Write weakness

References