Advisory Details

September 21st, 2020

Apple Safari replace Type Confusion Remote Code Execution Vulnerability

CVE ID	CVE-2020-9948
CVSS SCORE	8.8, AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
AFFECTED VENDORS	Apple
AFFECTED PRODUCTS	Safari
VULNERABILITY DETAILS	This vulnerability allows remote attackers to execute arbitrary code on affected installations of Apple Safari. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the optimization of calls to String.prototype.replace. By performing actions in JavaScript, an attacker can trigger a type confusion condition. An attacker can leverage this vulnerability to execute code in the context of the current process.
ADDITIONAL DETAILS	Apple has issued an update to correct this vulnerability. More details can be found at: https://support.apple.com/en-gb/HT211845
DISCLOSURE TIMELINE	2020-07-15 - Vulnerability reported to vendor 2020-09-21 - Coordinated public release of advisory
CREDIT	Brendan Draper (@6r3nd4n)

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