vulntracker.iovulntracker.io
© 2026 vulntracker.io

CVE-2018-12393

N/A
Published: February 28, 2019 at 06:00 PM UTC
Updated: June 17, 2026 at 01:37 AM UTC
11 products affected across 4 vendorsDebian LinuxUbuntu LinuxFirefox

Using Firefox by Mozilla?

Get instant alerts when new vulnerabilities affect Firefox - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Start FreeSign In
Severity
N/A
Exploit prediction
EPSS 4%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Ubuntu Linux· Canonicalrubygems
95%
14.0416.0418.0418.10
Debian Linux· Debiandrupal
95%
8.09.0
Firefox· Mozilla
95%
v < 63v < 63.0
Affected range stops below 63, so it looks safe — our inference, not a vendor statement
Affected range stops below 63.0, so it looks safe — our inference, not a vendor statement
Firefox ESR· Mozilla
95%
v < 60.3
Affected range stops below 60.3, so it looks safe — our inference, not a vendor statement
Thunderbird· Mozilla
95%
v < 60.3
Affected range stops below 60.3, so it looks safe — our inference, not a vendor statement
Enterprise Linux Desktop· Red Hatrubygems
95%
6.07.0
Enterprise Linux Server· Red Hatrubygems
95%
6.07.0
Enterprise Linux Server Aus· Red Hatrubygems
95%
7.6
Enterprise Linux Server Eus· Red Hatrubygems
95%
7.6
Enterprise Linux Server Tus· Red Hatrubygems
95%
7.6

References (19)

VDB Entryx_refsource_BIDThird Party Advisory
Source: [email protected]
http://www.securityfocus.com/bid/105718
VDB Entryx_refsource_BIDThird Party Advisory
Source: [email protected]
http://www.securityfocus.com/bid/105769
VDB Entryx_refsource_SECTRACKThird Party Advisory
Source: [email protected]
http://www.securitytracker.com/id/1041944
Vendor Advisoryx_refsource_REDHATThird Party Advisory
Source: [email protected]
https://access.redhat.com/errata/RHSA-2018:3005
Vendor Advisoryx_refsource_REDHATThird Party Advisory
Source: [email protected]
https://access.redhat.com/errata/RHSA-2018:3006
Vendor Advisoryx_refsource_REDHATThird Party Advisory
Source: [email protected]
https://access.redhat.com/errata/RHSA-2018:3531
Vendor Advisoryx_refsource_REDHATThird Party Advisory
Source: [email protected]
https://access.redhat.com/errata/RHSA-2018:3532
x_refsource_CONFIRMIssue TrackingPermissions RequiredVendor Advisory
Source: [email protected]
https://bugzilla.mozilla.org/show_bug.cgi?id=1495011

CVSS

5MEDIUM[email protected]
Confidentiality
NONE
Integrity
NONE
Availability
PARTIAL
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-190CWE-787

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create accountSign in
Free plan, no card