Integer overflow in Mozilla Firefox - CVE-2018-12371

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Main Vulnerability Database Vulnerabilities #VU13484

Integer overflow in Mozilla Firefox - CVE-2018-12371

Published: June 27, 2018 / Updated: July 15, 2020


Vulnerability identifier: #VU13484
CSH Severity: High
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2018-12371
CWE-ID: CWE-190
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to integer overflow in the Skia library when allocating memory for edge builders on some systems with at least 16 GB of RAM. A remote unauthenticated attacker can trick the victim into visiting a specially crafted website, trigger memory corruption and execute arbitrary code with elevated privileges.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


Affected software

Mozilla Firefox
Firefox ESR
Arch Linux
Gentoo Linux
Debian Linux
Ubuntu
Opensuse
openSUSE Leap
firefox (Ubuntu package)
Mozilla Thunderbird

How to mitigate CVE-2018-12371

Update to version 61.0.

Mozilla Firefox - update to 61.0
Mozilla Thunderbird - update to 60.0
firefox (Ubuntu package) - addressed in versions 61.0+build3-0ubuntu0.14.04.2, 61.0+build3-0ubuntu0.16.04.2, 61.0+build3-0ubuntu0.17.10.1, 61.0+build3-0ubuntu0.18.04.1

External References

Related Security Bulletins