Memory corruption in Mozilla Firefox - CVE-2018-5187

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Main Vulnerability Database Vulnerabilities #VU13494

Memory corruption in Mozilla Firefox - CVE-2018-5187

Published: June 27, 2018


Vulnerability identifier: #VU13494
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-2018-5187
CWE-ID: CWE-119
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 boundary error when handling malicious input. 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-2018-5187

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