Vulnerability identifier: #VU53500

Vulnerability risk: High

CVSSv3.1:

CVE-ID: CVE-2021-30749

CWE-ID: CWE-119

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
macOS
Operating systems & Components / Operating system

Vendor: Apple Inc.

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 HTML content within the KeyframeEffect class in WebKit. A remote attacker can create a specially crafted web oage, 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 updates from vendor's website.

Vulnerable software versions

macOS: 11.0 20A2411 - 11.3.1 20E241

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CPE

• cpe:2.3:o:apple:macos:11.3.1:20E241:*:*:*:*:*:*

External links
http://support.apple.com/en-us/HT212529
http://www.zerodayinitiative.com/advisories/ZDI-21-761/

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Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?