CVE-2019-11759

Description

An attacker could have caused 4 bytes of HMAC output to be written past the end of a buffer stored on the stack. This could be used by an attacker to execute arbitrary code or more likely lead to a crash. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2.

CVSS Version 3.1

nvd

CVE ID: CVE-2019-11759
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-2019-11759
Base Score: 6.8
Base Severity: MEDIUM
Vector String:AV:N/AC:M/Au:N/C:P/I:P/A:P

Refrence: NVD