| Risk | Critical |
| Patch available | YES |
| Number of vulnerabilities | 4 |
| CVE ID | CVE-2020-27930 CVE-2020-27932 CVE-2020-27950 CVE-2020-27904 |
| CWE ID | CWE-119 CWE-843 CWE-125 |
| Exploitation vector | Network |
| Public exploit |
Vulnerability #1 is being exploited in the wild. Vulnerability #2 is being exploited in the wild. Vulnerability #3 is being exploited in the wild. Public exploit code for vulnerability #4 is available. |
| Vulnerable software Subscribe |
macOS Operating systems & Components / Operating system |
| Vendor | Apple Inc. |
Risk: Critical
CVSSv3.1: 8.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C] [PCI]
CVE-ID: CVE-2020-27930
CWE-ID:
CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer
Exploit availability: Yes
DescriptionThe 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.
Install updates from vendor's website.
Vulnerable software versionsmacOS: 10.15 19A583, 10.15 19A602, 10.15.1 19B88, 10.15.2 19C57, 10.15.3 19D76, 10.15.4 19E266, 10.15.4 19E287, 10.15.5 19F96, 10.15.5 19F101, 10.15.6 19G73, 10.15.6 19G2021, 10.15.7 19H2
CPEhttps://support.apple.com/en-us/HT211947
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
Yes. This vulnerability is being exploited in the wild.
Risk: Medium
CVSSv3.1: 8.4 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:H/RL:O/RC:C] [PCI]
CVE-ID: CVE-2020-27932
CWE-ID:
CWE-843 - Access of Resource Using Incompatible Type ('Type Confusion')
Exploit availability: Yes
DescriptionThe 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.
Install updates from vendor's website.
Vulnerable software versionsmacOS: 10.15 19A583, 10.15 19A602, 10.15.1 19B88, 10.15.2 19C57, 10.15.3 19D76, 10.15.4 19E266, 10.15.4 19E287, 10.15.5 19F96, 10.15.5 19F101, 10.15.6 19G73, 10.15.6 19G2021, 10.15.7 19H2
CPEhttps://support.apple.com/en-us/HT211947
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
Yes. This vulnerability is being exploited in the wild.
Risk: Low
CVSSv3.1: 6.2 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N/E:H/RL:O/RC:C] [PCI]
CVE-ID: CVE-2020-27950
CWE-ID:
CWE-125 - Out-of-bounds Read
Exploit availability: Yes
DescriptionThe 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.
Install updates from vendor's website.
Vulnerable software versionsmacOS: 10.15 19A583, 10.15 19A602, 10.15.1 19B88, 10.15.2 19C57, 10.15.3 19D76, 10.15.4 19E266, 10.15.4 19E287, 10.15.5 19F96, 10.15.5 19F101, 10.15.6 19G73, 10.15.6 19G2021, 10.15.7 19H2
CPEhttps://support.apple.com/en-us/HT211947
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
Yes. This vulnerability is being exploited in the wild.
Risk: Low
CVSSv3.1: 7.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C] [PCI]
CVE-ID: CVE-2020-27904
CWE-ID:
CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer
Exploit availability: Yes
DescriptionThe 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.
Install updates from vendor's website.
Vulnerable software versionsmacOS: 11.0 20A2411
CPE External linkshttp://seclists.org/fulldisclosure/2020/Dec/32
https://support.apple.com/en-us/HT211931
https://support.apple.com/kb/HT212147
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.