Type Confusion in Mozilla Firefox and Firefox ESR - CVE-2020-12415

CSH
CYBERSECURITY HELP
Sign In REGISTER
 
Main Vulnerability Database Vulnerabilities #VU29450

Type Confusion in Mozilla Firefox and Firefox ESR - CVE-2020-12415

Published: July 2, 2020 / Updated: July 31, 2020


Vulnerability identifier: #VU29450
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-2020-12415
CWE-ID: CWE-843
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: Mozilla
Affected software:
Mozilla Firefox
Firefox ESR

Detailed vulnerability description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a type confusion error due to missing sign-extension for ValueTags on ARM64. A remote attacker can pass specially crafted data to the application, 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.


How to mitigate CVE-2020-12415

Install updates from vendor's website.

Sources