#VU26429 Use-after-free in Apple Safari - CVE-2020-9783

Vulnerability identifier: #VU26429

Vulnerability risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2020-9783

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 when processing maliciously crafted web content. A remote attacker can trick a victim to open a specially crafted file or visit a malicious page and execute arbitrary code on the target system.

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 - 0.9, 1.0 - 13.0.3, 2 - 2.0.4, 3 - 3.52, 4 - 4.31, 5.0 - 5.34, 6.0 - 6.2.8, 7.0 - 7.1.8, 8.0 - 8.0.8, 9 - 9.1.3

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External links
https://seclists.org/fulldisclosure/2020/Mar/35
https://support.apple.com/en-eg/HT211104

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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.