Zero-day vulnerability in macOS

Memory corruption
CVE-2020-27930

Vulnerability details

Advisory: SB2020110604 - Multiple vulnerabilities in Apple macOS

Vulnerable component: macOS

CVE-ID: CVE-2020-27930

CVSSv3 score: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C

CWE-ID: CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer

Description:

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

The vulnerability exists due to a boundary error when processing fonts within the FontParser component. A remote attacker can create a specially crafted document or web page, trick the victim into opening it, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Note, this vulnerability is being actively exploited in the wild.

External links:

https://support.apple.com/kb/HT211947