CVE-2018-12393

HIGH

Firefox <63, Firefox ESR <60.3, Thunderbird <60.3 - Buffer Overflow

Title source: llm
STIX 2.1

Description

A potential vulnerability was found in 32-bit builds where an integer overflow during the conversion of scripts to an internal UTF-16 representation could result in allocating a buffer too small for the conversion. This leads to a possible out-of-bounds write. *Note: 64-bit builds are not vulnerable to this issue.*. This vulnerability affects Firefox < 63, Firefox ESR < 60.3, and Thunderbird < 60.3.

References (19)

Core 19
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/105769
Third Party Advisory vendor-advisory x_refsource_debian
https://www.debian.org/security/2018/dsa-4324
Vendor Advisory x_refsource_confirm
https://www.mozilla.org/security/advisories/mfsa2018-28/
Vendor Advisory x_refsource_confirm
https://www.mozilla.org/security/advisories/mfsa2018-26/
Third Party Advisory mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2018/11/msg00011.html
Third Party Advisory vendor-advisory x_refsource_gentoo
https://security.gentoo.org/glsa/201811-04
Third Party Advisory vendor-advisory x_refsource_gentoo
https://security.gentoo.org/glsa/201811-13
Third Party Advisory vendor-advisory x_refsource_debian
https://www.debian.org/security/2018/dsa-4337
Vendor Advisory x_refsource_confirm
https://www.mozilla.org/security/advisories/mfsa2018-27/
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2018:3005
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/105718
Issue Tracking, Permissions Required, Vendor Advisory x_refsource_confirm
https://bugzilla.mozilla.org/show_bug.cgi?id=1495011
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2018:3006
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3801-1/
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3868-1/
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2018:3532
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2018:3531
Third Party Advisory mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2018/11/msg00008.html
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id/1041944

Scores

CVSS v3 7.5
EPSS 0.0578
EPSS Percentile 90.6%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-190 CWE-787
Status published
Products (18)
canonical/ubuntu_linux 14.04
canonical/ubuntu_linux 16.04
canonical/ubuntu_linux 18.04
canonical/ubuntu_linux 18.10
debian/debian_linux 8.0
debian/debian_linux 9.0
mozilla/firefox < 63.0
mozilla/firefox_esr < 60.3
mozilla/thunderbird < 60.3
redhat/enterprise_linux_desktop 6.0
... and 8 more
Published Feb 28, 2019
Tracked Since Feb 18, 2026