CVE-2019-11757

Description

When following the value's prototype chain, it was possible to retain a reference to a locale, delete it, and subsequently reference it. This resulted in a use-after-free and a potentially exploitable crash. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2.

CVSS Version 3.1

nvd

CVE ID: CVE-2019-11757
Base Score: 8.8
Base Severity: HIGH
Vector String:CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Impact Score: 5.9
Exploitability Score: 2.8

CVSS Version 2.0

nvd

CVE ID: CVE-2019-11757
Base Score: 6.8
Base Severity: MEDIUM
Vector String:AV:N/AC:M/Au:N/C:P/I:P/A:P

Refrence: NVD