#VU18032 Memory corruption in Mozilla Firefox and Firefox ESR - CVE-2019-9793
Published: March 21, 2019 / Updated: March 21, 2019
Vulnerability identifier: #VU18032
Vulnerability risk: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2019-9793
CWE-ID: CWE-119
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 compromise vulnerable system.
The vulnerability exists due to missing boundary checks for strings, arrays or typed arrays when the default Spectre mitigations have been disabled. A remote attacker can trick the victim to visit a specially crafted web page, trigger memory corruption and execute arbitrary code on the system with privileges of the current user.
Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system but requires the user to specifically disable Spectre mitigations.
Remediation
Install updates from vendor's website.