SB2020110604 - Multiple vulnerabilities in Apple macOS
Published: November 6, 2020
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 4 secuirty vulnerabilities.
1) Memory corruption (CVE-ID: CVE-2020-27930)
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.
2) Type Confusion (CVE-ID: CVE-2020-27932)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a type confusion error in macOS kernel. A local user can run a specially crafted application to trigger a type confusion error and execute arbitrary code with elevated privileges.
Note, this vulnerability is being actively exploited in the wild.
3) Out-of-bounds read (CVE-ID: CVE-2020-27950)
The vulnerability allows a local user to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition within macOS kernel. A local user can run a specially crafted program to gain access to sensitive kernel information on the system.
Note, this vulnerability is being actively exploited in the wild.
4) Buffer overflow (CVE-ID: CVE-2020-27904)
The vulnerability allows a local application to escalate privileges on the system.
The vulnerability exists due to a boundary error within the OS kernel subsystem. A local application can execute arbitrary code with kernel privileges.
Remediation
Install update from vendor's website.