Vulnerabilities
Misconfiguration
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CVE Vulnerabilities

CVE-2018-12386

Incorrect Type Conversion or Cast

Published: Oct 18, 2018 | Modified: Nov 25, 2025
CVSS 3.x
8.1
HIGH
Source:
NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
CVSS 2.x
5.8 MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:N
RedHat/V2
RedHat/V3
8.8 CRITICAL
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Ubuntu
MEDIUM
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2018-12386
CWEhttps://cwe.mitre.org/data/definitions/704.html

A vulnerability in register allocation in JavaScript can lead to type confusion, allowing for an arbitrary read and write. This leads to remote code execution inside the sandboxed content process when triggered. This vulnerability affects Firefox ESR < 60.2.2 and Firefox < 62.0.3.

Weakness

The product does not correctly convert an object, resource, or structure from one type to a different type.

Affected Software

NameVendorStart VersionEnd Version
Enterprise_linux_desktopRedhat6.0 (including)6.0 (including)
Enterprise_linux_desktopRedhat7.0 (including)7.0 (including)
Enterprise_linux_serverRedhat6.0 (including)6.0 (including)
Enterprise_linux_serverRedhat7.0 (including)7.0 (including)
Enterprise_linux_server_ausRedhat7.6 (including)7.6 (including)
Enterprise_linux_server_eusRedhat7.5 (including)7.5 (including)
Enterprise_linux_server_eusRedhat7.6 (including)7.6 (including)
Enterprise_linux_server_tusRedhat7.6 (including)7.6 (including)
Enterprise_linux_workstationRedhat6.0 (including)6.0 (including)
Enterprise_linux_workstationRedhat7.0 (including)7.0 (including)
Red Hat Enterprise Linux 6RedHatfirefox-0:60.2.2-1.el6*
Red Hat Enterprise Linux 7RedHatfirefox-0:60.2.2-1.el7_5*
FirefoxUbuntubionic*
FirefoxUbuntucosmic*
FirefoxUbuntudevel*
FirefoxUbuntudisco*
FirefoxUbuntueoan*
FirefoxUbuntufocal*
FirefoxUbuntugroovy*
FirefoxUbuntuhirsute*
FirefoxUbuntuimpish*
FirefoxUbuntujammy*
FirefoxUbuntukinetic*
FirefoxUbuntulunar*
FirefoxUbuntumantic*
FirefoxUbuntunoble*
FirefoxUbuntutrusty*
FirefoxUbuntuupstream*
FirefoxUbuntuxenial*
Mozjs38Ubuntubionic*
Mozjs38Ubuntuesm-apps/bionic*
Mozjs38Ubuntuupstream*
Mozjs52Ubuntubionic*
Mozjs52Ubuntucosmic*
Mozjs52Ubuntudisco*
Mozjs52Ubuntueoan*
Mozjs52Ubuntuesm-apps/focal*
Mozjs52Ubuntuesm-infra/bionic*
Mozjs52Ubuntufocal*
Mozjs52Ubuntugroovy*
Mozjs52Ubuntuupstream*
ThunderbirdUbuntubionic*
ThunderbirdUbuntucosmic*
ThunderbirdUbuntudevel*
ThunderbirdUbuntudisco*
ThunderbirdUbuntueoan*
ThunderbirdUbuntufocal*
ThunderbirdUbuntugroovy*
ThunderbirdUbuntuhirsute*
ThunderbirdUbuntuimpish*
ThunderbirdUbuntujammy*
ThunderbirdUbuntukinetic*
ThunderbirdUbuntulunar*
ThunderbirdUbuntumantic*
ThunderbirdUbuntunoble*
ThunderbirdUbuntutrusty*
ThunderbirdUbuntuupstream*
ThunderbirdUbuntuxenial*

References

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