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Mend.io Vulnerability Database

CVE-2018-12393

Date: February 28, 2019

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.

Severity Score

7.5

Related Resources (24)

Url: https://www.mozilla.org/security/advisories/mfsa2018-28/

Url: https://security.gentoo.org/glsa/201811-04

Url: https://www.mozilla.org/security/advisories/mfsa2018-27/

Url: https://www.mozilla.org/security/advisories/mfsa2018-26/

Url: https://access.redhat.com/security/cve/CVE-2018-12393

Url: https://security.gentoo.org/glsa/201811-13

Url: https://nvd.nist.gov/vuln/detail/CVE-2018-12393

Url: https://usn.ubuntu.com/3801-1/

Url: https://www.debian.org/security/2018/dsa-4324

Url: https://www.debian.org/security/2018/dsa-4337

Url: https://bugzilla.mozilla.org/show_bug.cgi?id=1495011

Url: https://usn.ubuntu.com/3868-1/

Url: https://people.canonical.com/~ubuntu-security/cve/CVE-2018-12393

Url: https://lists.debian.org/debian-lts-announce/2018/11/msg00011.html

Url: https://access.redhat.com/errata/RHSA-2018:3006

Url: http://www.securityfocus.com/bid/105769

Url: https://access.redhat.com/errata/RHSA-2018:3005

Url: https://lists.debian.org/debian-lts-announce/2018/11/msg00008.html

Url: https://access.redhat.com/errata/RHSA-2018:3532

Url: https://security-tracker.debian.org/tracker/CVE-2018-12393

Url: https://access.redhat.com/errata/RHSA-2018:3531

Url: http://www.securityfocus.com/bid/105718

Url: http://www.securitytracker.com/id/1041944

Url: https://www.mend.io/vulnerability-database/CVE-2018-12393

Severity Score

7.5

Weakness Type (CWE)

Integer Overflow or Wraparound

CWE-190

Out-of-bounds Write

CWE-787

CVSS v3.1

Base Score:	7.5
Attack Vector (AV):	NETWORK
Attack Complexity (AC):	LOW
Privileges Required (PR):	NONE
User Interaction (UI):	NONE
Scope (S):	UNCHANGED
Confidentiality (C):	NONE
Integrity (I):	NONE
Availability (A):	HIGH

CVSS v2

Base Score:	5.0
Access Vector (AV):	NETWORK
Access Complexity (AC):	LOW
Authentication (AU):	NONE
Confidentiality (C):	NONE
Integrity (I):	NONE
Availability (A):	PARTIAL
Additional information:

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CVE-2018-12393

Date: February 28, 2019

Severity Score

Related Resources (24)

Severity Score

Weakness Type (CWE)

CVSS v3.1

CVSS v2

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