Vulnerability identifier: #VU20912

Vulnerability risk: Medium

CVSSv3.1: 4.4 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: N/A

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 compromise vulnerable system.

The vulnerability exists due to a use-after-free error in the InlineFlowBox within the "deleteLine" method. A remote attacker can trick a victim to visit a malicious page or open a malicious file and execute arbitrary code in the context of the current process.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Apple Safari: 0.8 - 12.0.3

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External links
http://www.zerodayinitiative.com/advisories/ZDI-19-684/

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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.