Permissions, Privileges, and Access Controls in Mozilla Firefox and Firefox ESR - CVE-2020-12389
Published: May 5, 2020
Vulnerability identifier: #VU27531
CSH Severity: High
CVSS v4.0: 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-2020-12389
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Mozilla
Affected software:
Mozilla Firefox
Firefox ESR
Mozilla Firefox
Firefox ESR
Detailed vulnerability description
The vulnerability allows a remote attacker to escalate privileges on the system.
The vulnerability exists due the Firefox content processes did not sufficiently lockdown access control for separate process types. A remote attacker can bypass implemented security restrictions and execute arbitrary code on the target system.
Note, this vulnerability affects Windows versions only.How to mitigate CVE-2020-12389
Install updates from vendor's website.