CVE-2019-11757 Information

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 Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Reference

https://bugzilla.mozilla.org/show_bug.cgi?id=1577107 https://security.gentoo.org/glsa/202003-10 https://usn.ubuntu.com/4335-1/ https://www.mozilla.org/security/advisories/mfsa2019-33/ https://www.mozilla.org/security/advisories/mfsa2019-34/ https://www.mozilla.org/security/advisories/mfsa2019-35/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

8.8