#VU15150 Off-by-one in Mozilla Firefox and Firefox ESR - CVE-2018-12387
Published: October 3, 2018
Vulnerability identifier: #VU15150
Vulnerability risk: High
CVSSv4.0: 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/E:U/U:Amber
CVE-ID: CVE-2018-12387
CWE-ID: CWE-193
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Mozilla Firefox
Firefox ESR
Mozilla Firefox
Firefox ESR
Software vendor:
Mozilla
Mozilla
Description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to an off-by-one error within the JavaScript JIT compiler when processing Array.prototype.push with multiple arguments. A remote attacker can create a specially crafted web page, trick the victim into visiting it, trigger an off-by-eight error and execute arbitrary code on the target system inside the sandboxed content process.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Remediation
Install updates from vendor's website.