Remote code execution in WebKit in Apple macOS

1) Buffer overflow

EUVDB-ID: #VU51268

Risk: High

CVSSv4.0: 6.1 [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-2021-1844

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

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 web content in WebKit. A remote attacker can create a specially crafted 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.

Mitigation

Install update from vendor's website.

Vulnerable software versions

macOS: 11.0 20A2411 - 11.2.2 20D80

CPE2.3

• cpe:2.3:o:apple:macos:11.0:20A2411:*:*:*:*:*:*
• cpe:2.3:o:apple:macos:11.0.1:20B29:*:*:*:*:*:*
• cpe:2.3:o:apple:macos:11.0.1:20B50:*:*:*:*:*:*
• cpe:2.3:o:apple:macos:11.1:20C69:*:*:*:*:*:*
• cpe:2.3:o:apple:macos:11.2:20D64:*:*:*:*:*:*
• cpe:2.3:o:apple:macos:11.2.1:20D74:*:*:*:*:*:*
• cpe:2.3:o:apple:macos:11.2.1:20D75:*:*:*:*:*:*
• cpe:2.3:o:apple:macos:11.2.2:20D80:*:*:*:*:*:*

External links

https://support.apple.com/en-us/HT212220

Q & A

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?

No. We are not aware of malware exploiting this vulnerability.