CVE-2018-12379 Information

Description

When the Mozilla Updater opens a MAR format file which contains a very long item filename an out-of-bounds write can be triggered leading to a potentially exploitable crash. This requires running the Mozilla Updater manually on the local system with the malicious MAR file in order to occur. This vulnerability affects Firefox 62 Firefox ESR 60.2 and Thunderbird 60.2.1.

CVSS Vector

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

Reference

http://www.securityfocus.com/bid/105280 http://www.securitytracker.com/id/1041610 https://access.redhat.com/errata/RHSA-2018:2692 https://access.redhat.com/errata/RHSA-2018:2693 https://access.redhat.com/errata/RHSA-2018:3403 https://access.redhat.com/errata/RHSA-2018:3458 https://bugzilla.mozilla.org/show_bug.cgi?id=1473113 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://www.debian.org/security/2018/dsa-4327 https://www.mozilla.org/security/advisories/mfsa2018-20/ https://www.mozilla.org/security/advisories/mfsa2018-21/ https://www.mozilla.org/security/advisories/mfsa2018-25/

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.8