CVE-2018-12367 Information

Description

In the previous mitigations for Spectre the resolution or precision of various methods was reduced to counteract the ability to measure precise time intervals. In that work PerformanceNavigationTiming was not adjusted but it was found that it could be used as a precision timer. This vulnerability affects Thunderbird 60 Firefox ESR 60.1 and Firefox 61.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

Reference

http://www.securityfocus.com/bid/104561 http://www.securitytracker.com/id/1041193 https://bugzilla.mozilla.org/show_bug.cgi?id=1462891 https://lists.debian.org/debian-lts-announce/2018/11/msg00011.html https://security.gentoo.org/glsa/201810-01 https://security.gentoo.org/glsa/201811-13 https://usn.ubuntu.com/3705-1/ https://www.debian.org/security/2018/dsa-4295 https://www.mozilla.org/security/advisories/mfsa2018-15/ https://www.mozilla.org/security/advisories/mfsa2018-16/ https://www.mozilla.org/security/advisories/mfsa2018-19/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

LOW

Availability Impact

NONE

Base Score

NONE

Base Severity

4.3