#VU52682 Use-after-free in Apple iOS and iPadOS - CVE-2021-1864

Vulnerability identifier: #VU52682

Vulnerability 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-2021-1864

CWE-ID: CWE-416

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Apple iOS
Operating systems & Components / Operating system
iPadOS
Operating systems & Components / Operating system

Vendor: Apple Inc.

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error when processing JavaScript in iTunes Store. A remote attacker can use a specially crafted JavaScript to trigger use-after-free error and execute arbitrary code on the system.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Apple iOS: 14.0 18A373 - 14.0.1 18A393, 14.1 18A8395, 14.2 18B92 - 14.2.1 18B121, 14.3 18C66, 14.4 18D52 - 14.4.2 18D70

iPadOS: 14.0 18A373 - 14.4.2 18D70

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External links
https://support.apple.com/en-us/HT212317

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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.