Memory corruption in Mozilla Firefox - CVE-2018-5126
Published: March 13, 2018
Vulnerability identifier: #VU10979
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-2018-5126
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 weakness exists due to boundary error when handling malicious input. A remote attacker can trick the victim into visiting a specially crafted website, trigger memory corruption and execute arbitrary code.
Successful exploitation of the vulnerability may result in system compromise.
The weakness exists due to boundary error when handling malicious input. A remote attacker can trick the victim into visiting a specially crafted website, trigger memory corruption and execute arbitrary code.
Successful exploitation of the vulnerability may result in system compromise.
Affected software
Mozilla Firefox
firefox (Ubuntu package)
firefox (Ubuntu package)
How to mitigate CVE-2018-5126
Update to version 59.0.
firefox (Ubuntu package) - addressed in versions 59.0+build5-0ubuntu0.14.04.1, 59.0+build5-0ubuntu0.16.04.1, 59.0+build5-0ubuntu0.17.10.1