Advisory Details

July 26th, 2018

(Pwn2Own) Apple Safari SVG Heap-based Buffer Overflow Remote Code Execution Vulnerability

CVE ID	CVE-2018-4199
CVSS SCORE	6.8, AV:N/AC:M/Au:N/C:P/I:P/A:P
AFFECTED VENDORS	Apple
AFFECTED PRODUCTS	Safari
TREND MICRO CUSTOMER PROTECTION	Trend Micro TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID ['30821']. For further product information on the TippingPoint IPS: http://www.tippingpoint.com
VULNERABILITY DETAILS	This vulnerability allows remote attackers to execute arbitrary code on vulnerable 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 handling of SVG elements. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code under 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-ca/HT208849
DISCLOSURE TIMELINE	2018-02-20 - Vulnerability reported to vendor 2018-07-26 - Coordinated public release of advisory 2018-12-20 - Advisory Updated
CREDIT	MWR Labs - Alex Plaskett Georgi Geshev Fabian Beterke

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