Vulnerability identifier: #VU8119

Vulnerability risk: High

CVSSv3.1: 8.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-7071

CWE-ID: CWE-416

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Apple Safari
Client/Desktop applications / Web browsers

Vendor: Apple Inc.

Description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The weakness exists due to use-after-free error when handling HTMLSlotElement objects. A remote attacker can trick the victim into visiting a specially crafted website or open a malicious file and execute arbitrary code on vulnerable installations of Apple Safari under the context of the current process.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation
Update to version 10.1.

Vulnerable software versions

Apple Safari: 7.0 - 9.1.3

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External links
http://www.zerodayinitiative.com/advisories/ZDI-17-714/

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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.