#VU55226 Security features bypass in Apple iOS and iPadOS - CVE-2021-30770

Vulnerability identifier: #VU55226

Vulnerability risk: Low

CVSSv4.0: 1.9 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-30770

CWE-ID: CWE-254

Exploitation vector: Local

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 local application to escalate privileges on the system.

The vulnerability exists due to a logic error within the OS Kernel subsystem. A local application that has already achieved kernel code execution may be able to bypass kernel memory mitigations.

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, 14.5 18E199 - 14.5.1 18E212, 14.6 18F72

iPadOS: 14.0 18A373 - 14.6 18F72

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External links
https://support.apple.com/en-us/HT212601

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Q & A

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.