Vulnerability identifier: #VU9567

Vulnerability risk: Low

CVSSv3.1: 4.6 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-13874

CWE-ID: CWE-295

Exploitation vector: Local

Exploit availability: No

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

Vendor: Apple Inc.

Description
The vulnerability allows a local attacker to bypass security restrictions on the target system.

The weakness exists due to a S/MIME issue in the handling of encrypted email. A local attacker can cause incorrect certificate to be used for encryption.

Mitigation
Update to version 11.2.

Vulnerable software versions

Apple iOS: 10.3 - 10.3.3, 11.1 - 11.1.1, 11.0.0 - 11.0.3

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External links
http://support.apple.com/en-us/HT208334

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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.