#VU18062 Type Confusion in Firefox ESR and Mozilla Firefox - CVE-2019-9813
Published: March 22, 2019 / Updated: June 17, 2021
Vulnerability identifier: #VU18062
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:P/U:Amber
CVE-ID: CVE-2019-9813
CWE-ID: CWE-843
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerable software:
Firefox ESR
Mozilla Firefox
Firefox ESR
Mozilla Firefox
Software vendor:
Mozilla
Mozilla
Description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a type confusion error when handling proto mutations in IonMonkey JIT code. A remote attacker can create a specially crafted web page, trick the victim into visiting it, trigger a type confusion error and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Remediation
Install updates from vendor's website.