Vulnerability identifier: #VU170

Vulnerability risk: Medium

CVSSv3.1: 4.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-4590

CWE-ID: CWE-451

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Apple Safari
Client/Desktop applications / Web browsers
Apple iOS
Operating systems & Components / Operating system

Vendor: Apple Inc.

Description
The vulnerability allows a remote attacker to cause a spoofing attacks.

The vulnerability exists due to a flaw in the parsing of 'about:' URL. A remote unauthenticated attacker can create a specially crafted web site to exploit this vulnerability and spoof user interface elements.

Successful exploitation of this vulnerability may result in disclosure of user information.

Mitigation
The vendor has issued a fix (9.1.2).

Vulnerable software versions

Apple Safari: 9.1 - 9.1.1

Apple iOS: 9.3.0 - 9.3.2

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External links
http://support.apple.com/en-us/HT206900
http://support.apple.com/cs-cz/HT206900

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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.