#VU26452 Permissions, Privileges, and Access Controls in Apple iOS and iPadOS - CVE-2020-9781

Vulnerability identifier: #VU26452

Vulnerability risk: Medium

CVSSv4.0: 2.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/U:Green]

CVE-ID: CVE-2020-9781

CWE-ID: CWE-264

Exploitation vector: Network

Exploit availability: Yes

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 escalate privileges on the system.

The vulnerability exists due to improper website permission prompts after navigation. A remote autuenticated attacker can grant website permissions to a site they didn't intend to.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Apple iOS: 13.0 17A577, 13.1.1 17A854 - 13.1.3 17A878, 13.2.2 17B102 - 13.2.3 17B111, 13.3 17C54 - 13.3.1 17D50

iPadOS: 13.1.1 - 13.1.3, 13.2 - 13.2.3, 13.3 - 13.3.1

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External links
https://seclists.org/fulldisclosure/2020/Mar/28
https://support.apple.com/en-hk/HT211102

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

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.